Case Studies

Tertiary solids removal plant utilising a CoMag® process technology

£17m investment project spanning multiple phases to address operational challenges & enhance treatment capacity to maintain regulatory compliance

Installation of the UK’s first containerised mid-process hydroelectric turbine on a wastewater treatment works

Providing additional stormwater storage and improved site operation with the construction of a storm tank and installation of enhanced inlet screening

Part of South West Water’s WaterFit Programme of works that champions the rivers, seas and wider environment of the south-west

Construction of a new EBPR process stream operating in a UCT configuration and updating existing assets to improve the quality of the effluent

Utilising micro-organisms to break down, digest and clean wastewater, this nature-based reed bed solution reduces the need for chemical dosing

An £85m scheme that applied innovative modelling to optimise storm volumes and adopted the new approach to final effluent disinfection

Nature-based solution trial for phosphorus removal in Honiton, Devon

Reliable approach for phosphorus removal

The Ards Peninsula is a scenic area in County Down, situated on the north-east coast of Northern Ireland. It separates Strangford Lough from the north channel of the Irish Sea and its coastal towns and villages are popular with day trippers and caravanners alike. By 2020, the wastewater treatment works serving the villages of Carrowdore […]

Ballygowan is a small village situated in County Down, within the Ards & North Down Borough Council area. The towns of Comber and Saintfield are both approximately 4 miles to the north-east, and to the south respectively, with the city of Belfast 7 miles north-west. The 2021 Census indicates that the population of Ballygowan is […]

Beckton Sewage Treatment Works (STW) is the United Kingdom’s largest STW serving a population equivalent of over four million. The AMP7 project is a major £185m investment to increase the site’s treatment capacity for growth, by a population equivalent of 200,000, by extending the existing activated sludge plant (ASP). Beckton STW will receive stormwater from […]

The Burnley integrated catchment scheme is one of United Utilities’ (UU) largest AMP7 projects with a value of £77m. The project is being delivered by UU’s construction delivery partner (CDP) framework by Advance-plus, a joint venture between MWH Treatment, J Murphy & Sons (JMS) and Stantec UK. The project commenced in 2020 and through two […]

Deephams Sewage Treatment Works (STW) is located in Edmonton, North London. In November 2018, Thames Water Utilities Limited (TWUL) issued take-over to the AECOM, Murphy, and Kier (AMK) joint venture for the replacement of the entire sewage treatment stream. The project increased the treatment capacity to 989,000 population equivalent and met the new final effluent […]

Finham STW, situated near Coventry in the West Midlands, is Severn Trent’s fifth largest wastewater treatment works and treats over 115 megalitres of effluent a day from half a million people. The works processes indigenous sludge on site as well as accepting exports from local, satellite sites, producing final effluent, ‘cake’ and biogas as outputs. […]

Goddards Green Wastewater Treatment Works (WwTW) is a Sludge Treatment Centre (STC) located near Burgess Hill in West Sussex. The catchment serves the towns of Burgess Hill, Hassocks, Hurstpierpoint and surrounding villages, providing for 54,789 people. The project implements an innovative approach to mitigate the likely odour from the processes at the WwTW to prevent […]

Guildford Borough Council (GBC) are progressing with the development of approximately 41 hectares of brownfield land located along the west bank of the River Wey as it runs through central Guildford and north through Slyfield Industrial Estate. Guildford Sewage Treatment Works (STW) lies within this land and requires relocation in order to enable the development […]

Knostrop Sewage Treatment Works (STW) is Yorkshire Water’s largest wastewater treatment site, serving a population equivalent of 990,000 and a full flow to treatment (FFT) of 5600 l/s. The WINEP Programme requires Yorkshire Water (YW) to achieve compliance with the new Total Phosphorus and Total Iron permit levels at 80 wastewater treatment works, including Knostrop. […]

NI Water has undertaken a highly sustainable project which replaces wastewater treatment infrastructure for the catchment of Loughries, a small village close to the shores of Strangford Lough. Due to its age, an increasing load from the village, and ever-tightening discharge limits being applied, the existing works was in danger of breaching consents. The project involved […]

North-west of Nottingham and separated by the River Erewash, two of Severn Trent’s sewage treatment works are situated within 2.5km of each other; part of the legacy of the times of the public statutory undertakers. Heanor Milnhay STW in Derbyshire has a dual-stream process, with part of the flows going through trickle filters and the […]

The Rivers Lugg and Wye have been identified as having high levels of phosphorus, which is causing eutrophication of these watercourses. Norton Wastewater Treatment Works (WwTW) discharges treated final effluent to the Norton Brook, a tributary of the River Lugg. Presteigne WwTW discharges treated final effluent directly into the River Lugg downstream of the Norton […]

Resource recovery for agricultural fertiliser use, while protecting the water quality in Dublin Bay

Roundhill Sewage Treatment Works (STW) is a large wastewater treatment site in the Severn Trent region serving Stourbridge and the surrounding area. It treats a flow to full treatment (FFT) of 1781 l/s and a population equivalent (PE) of around 300,000. The works was extensively rebuilt around the year 2000, with the large rectangular biofilters […]

To ensure compliance with tighter Environment Agency permits for phosphorus removal, the number of phosphorus reduction schemes have quadrupled since AMP5 and is seen by some as one of the biggest challenges ever to face the water industry. The Water Industry National Environment Programme (WINEP) is a programme of actions that water companies are required […]

Warrenpoint is a small town in County Down, situated on the northern shore of Carlingford Lough, approximately 7 miles south-east of Newry. The shared water of Carlingford Lough marks the border between Northern Ireland and Ireland. Due to its scenic beauty and coastal location, Warrenpoint is popular with day trippers and the town can experience […]

Winchburgh is located five miles west of Edinburgh Airport and the existing wastewater treatment works lies to the south-east of the town, approximately 200m from the nearest residential street. The site access road runs adjacent to the main Glasgow to Edinburgh railway line, the top of the embankment being a couple of metres from the […]

Increasing the environmental credentials through effective wastewater treatment prior to its discharge into nearby natural environments

United Utilities, through two major capital projects, is investing over £25m at Audley and Alsager Wastewater Treatment Works (WwTWs), between 2020 and 2025. This is to meet new regulatory permits under the Environment Agency’s Water Industry National Environment Programme (WINEP). Audley and Alsager WwTWs are located in East Cheshire and serve a population of 9,000 […]

Built in the 1970s, Ballykelly WwTW was designed to serve a population of just under 8,000. However, the closure of the nearby army barracks in 2008 meant the population was halved to around 3,600, leaving the works both biologically and hydraulically oversized. A hybrid solution, comprising conventional and natural wastewater treatment processes, was designed for […]

Situated close to the shores of Belfast Lough, Belfast Wastewater Treatment Works (WwTW) is Northern Ireland’s largest wastewater treatment plant, serving most of the City of Belfast. It occupies a large 45-acre site within Duncrue Industrial Estate and was designed to treat a domestic and trade population equivalent (PE) of 290,000 with discharge into Inner […]

In recent years the Oxfordshire town of Bicester had undergone significant growth in its population with a further potential growth of 37% in the near future. In late 2019, Thames Water implemented the need for a growth scheme to upgrade various elements of the works to accommodate the forecast population increase. Bicester STW is a […]

Both Blackburn WwTW and Darwen WwTW discharge final and storm effluent to watercourses that are tributaries of the River Darwen, feeding into the River Ribble estuary and the bathing waters of the Fylde coast in the Irish Sea. At Blackburn WwTW, which provides treatment for a population equivalent (PE) of approximately 400,000, construction of the […]

The Burnley Integrated Catchment Scheme is one of United Utilities largest AMP7 projects with a value of over £60m which commenced in 2020. The project is being delivered by Advance-plus, a joint venture between MWH Treatment, J Murphy & Sons and Stantec UK; United Utilities’ framework construction delivery partner (CDP). In UK Water Projects 2021 […]

Improving phosphorus performance and providing treatment resilience using preliminary and primary treatment for an existing MBR on a space constrained site

Enhanced river quality by utilising CoMag® ballasted enhanced settlement technology to remove phosphorus

Carlisle WwTW lies within United Utilities’ north Cumbria region. The site is located to the north-west of Carlisle’s city centre, on the banks of the River Eden, and serves the city of Carlisle. The treatment works receives domestic sewage, trade flows, and tankered imports, providing primary and secondary treatment prior to discharge to the River […]

Clifton Wetlands is a new, integrated constructed wetland (ICW) built at Yorkshire Water’s Clifton Wastewater Treatment Works (WwTW), near Doncaster in South Yorkshire. It is a ground-breaking project that utilises a nature based solution to replace conventional wastewater treatment processes with a natural, sustainable and low-carbon alternative. Yorkshire Water, the Environment Agency, Stantec UK and […]

Edale Mill Cottages Sewage Treatment Works is located in the heart of the Peak District National Park and serves a small community comprising 29 properties. The asset expired biofilter works and septic tank was process and hydraulically undersized and had been a source of odour complaints for the close neighbours for a number of years. […]

The large industrial town of Ellesmere Port in Cheshire is experiencing population growth, thanks to good transport links and an array of employment opportunities. The local population is set to rise by a further 10% by 2036, to over 76,000, so upgrades to the Ellesmere Port Wastewater Treatment Works (WwTW) are necessary to cope with […]

As part of the capital investment programme for the years 2020 to 2025 (AMP7), Yorkshire Water Services (YWS) set out to deliver a programme to comply with new regulatory obligations on phosphorus (P) standards (Water Industry National Environment Programme – WINEP) while ‘greening’ their approach to wastewater treatment by prioritising solutions with lowest whole life […]

The town of Hailsham in East Sussex has been experiencing significant housing growth in recent years. To accommodate local housebuilding targets and protect the environment, Southern Water has invested £30m to upgrade the Hailsham North and Hailsham South Wastewater Treatment Works (WwTWs) using innovative technology. Upgrading these works was necessary to comply with a stricter […]

Located in Lincolnshire east of Doncaster, Severn Trent’s Haxey-Graizlound Sewage Treatment Works (STW) serves a residential population equivalent of 5,169 with no trade loads within the catchment. The works receives pumped flows from two pumping stations located in the catchment. The present permit is BOD 25mg/l, suspended solids 45mg/l, ammonia 15mg/l with a dry weather […]

The sustainable energy efficient route to advanced digestion and safe biosolids reuse

Advance-plus, a joint venture between MWH Treatment, J Murphy & Sons and Stantec UK, are currently delivering a project at Horwich WwTW on behalf of United Utilities. The project is required to deliver the Environment Agency’s Water Industry National Environment Programme (WINEP) and takes into consideration future population growth based on a 2035 design horizon. […]

Quin Wastewater Treatment Plant (WwTP) is a small works serving a rural village in County Clare in the west of Ireland. The plant has been operating with a capacity of approx. 650 population equivalent (PE) and is operated and controlled by Irish Water. It discharges into the River Rine which flows to the Shannon Estuary, […]

Rothbury Sewage Treatment Works is an unmanned Northumbrian Water site located 13 miles north-west of Morpeth, Northumberland. It is on the western valley slope of the River Coquet, a designated Site of Special Scientific Interest. The area is a popular year-round holiday destination with several caravan sites within the catchment. The original works dates from […]

Southwaite is a small rural village in Cumbria about 5 kilometres south of Carlisle. The works treats a population of about 1,000 from the village and the nearby M6 Motorway Services. The existing trickling filter works had reached the end of its asset life and needed to be upgraded. In a first of its kind […]

Stoke Bardolph Sewage Treatment Works (STW) is Severn Trent’s second largest STW and serves a population of c. 620,000. The site is also a major regional sludge centre, meaning it takes a high volume of sludge imports from other sites in the region. Stoke Bardolph has a sludge treatment capacity equivalent to a population of […]

Strongford STW is a major sewage treatment works serving the population equivalent of circa 350,000 from Newcastle-under-Lyme and Stoke-on-Trent. The site’s sludge treatment facility provides a major centre for regional operations. Based on a forecast increase in population, it was identified that an increase in treatment capacity would be required to accommodate the local growth. […]

In September 2014 Severn Trent received an application under Section 101A of the Water Industry Act to provide first time sewerage to 11 properties in the Nottinghamshire village of Teversal. The outcome of an assessment of the existing sewerage provisions identified environmental or amenity problems at 18 properties and concluded that the provision of a […]

Ashbourne Sewage Treatment Works (STW) in Derbyshire serves a population equivalent of 48,259 from both domestic customers and a high trade load, primarily from poultry processing. There has been a works in this location since the 1930s, with existing processes including inlet pumping, 2mm fine screening, grit removal, primary settlement, secondary treatment through an oxidation […]

Barkers Haugh STW receives wastewater from a population of approximately 36,000 people. Due to a ratcheting of the Environment Agency consent in response to population growth (+4000) and a tighter total iron consent of 4mg/l an upgrade of the works was required. A total of £8m was invested to improve the quality of the effluent […]

Blackburn WwTW was constructed in the 1960s and principally treats domestic crude sewage from the Blackburn catchment, with two major additional contributions; a high strength trade effluent from the InBev brewery and an ammonia rich return liquor flow from the sludge treatment plant. The key river water quality/water framework directive parameters within the revised environmental […]

Burnley WwTW serves a domestic population equivalent (PE) of 107,115 plus trade load. The existing site processes include screening and grit removal, primary settlement, activated sludge plant (ASP) with final settlement, nitrifying filters, chemical dosing and storm storage tanks. The sludge treatment facilities include sludge thickening, THP, mesophilic anaerobic digestion (MAD), associated ancillaries and sludge […]

Carlisle WwTW is in north Cumbria, which is part of United Utilities’ northern area. The site is located to the north west of Carlisle’s city centre, on the banks of the River Eden, and serves the city of Carlisle. The treatment works receives domestic sewage, trade flows, and tankered imports, providing primary and secondary treatment […]

Clabby is a rural village located approximately 5km from Fivemiletown on the border between Counties Tyrone and Fermanagh. The existing wastewater treatment works was constructed in 2002 on the outskirts of the village with a design PE of 271 for a Water Order Consent (WOC) of 23:30 (BOD:SS). With a current PE of 450, the […]

Providing efficient phosphorus removal for the post-IFAS treatment plant at Ellesmere Port WwTW to achieve <0.5mg/l of Total P

The NEP Quality drivers for the Southern Water’s Hawkhurst South WTW are to meet the new iron and total phosphorus discharge permit limits by 31/12/2021, a tightened ammonia permit by 31/03/2025, and to maintain compliance with all aspects of the current discharge permit at lowest whole life cost. In addition, the population equivalent is set […]

In recent years, phosphorus discharge limits have been tightened to improve the surface water quality, particularly to address eutrophication issues. Before 2015, only a small number of sites in the UK had a total phosphorus (TP) permit as low as 1 mg/l under the Habitats Directive. Since then, TP permits have been continuously tightened in order to achieve […]

Constructed in 1991, the existing Withernsea Sewage Treatment Works (STW) lies 2km south of the East Yorkshire coastal resort town of Withernsea and was built circa 180m from the cliff edge with an expected asset life in excess of 60 years. Since 1998, coastal erosion rates in the area have increased significantly from historic levels, […]

Sludge treatment in the Huddersfield area was previously provided by incineration at Calder Valley Incinerator, located at Yorkshire Water’s Upper Brighouse Site. This incinerator has been inoperable since a weather event in 2015. Following a strategic review, Yorkshire Water Services (YWS) decided to progress with conventional mesophilic anaerobic digestion (MAD) plant supported by lime sanitisation […]

Located in Saltend, Yorkshire Water’s Hull WwTW provides sewage treatment for a population equivalent of over 1 million people, covering an area from the west of Hull to Hedon in the east. This case study follows on from an initial paper in 2020 and details the progress of the new inlet works and the refurbishment […]

A disruptive technology for high-value product generation from wastewater treatment

The Kineton STW required investment in AMP7 due to the introduction of a 0.5mg/l total phosphorus effluent limit, which comes into force by the end of December 2021. The new works is designed to cater for flows from Kineton, Butlers Marston and Radway equating to a combined design horizon population equivalent of 3,946. The existing […]

Both Ledbury and Brockhampton are medium sized works (c15,000 PE) serving the catchments of Ledbury and Cheltenham respectively. Each site was subject to a first-time phosphorus permit with Brockhampton receiving higher flow to full treatment and a tighter BOD permit, and Ledbury having significant growth projected in the catchment. Both sites both required new tertiary […]

Welsh Water raised a programme of quality schemes for completion in AMP6 to address tightening of phosphorus permits set by Natural Resources Wales (NRW) at ten wastewater treatment works. Some of the sites in the programme were subject to a new total phosphorus (TP) permit of 0.5 mg/l T-P and required the installation of a […]

The Phosphorus Removal Enhancement Programme (PREP) Batch is a group of projects within United Utilities. These projects provide improvements delivering the Environment Agency (EA) Water Industry National Environmental programme (WINEP) outputs for a future population growth based on a 2035 design horizon. With a focus on ensuring the lowest ‘whole life cost’ solution, the team […]

Donemana Wastewater Treatment Works (WwTW), located on the banks of the Burn Dennet River and at the foothills of the Sperrins in Co. Tyrone, serves the Donemana area – the largest of the thirteen villages in the Derry City and Strabane Council area. The existing works had been in service for almost 50 years with […]

Newry is situated some 35 miles south-west of Belfast at the northernmost end of Carlingford Lough, where the Clanrye River/Newry Estuary enters the sea. Newpoint Wastewater Pumping Station (WwPS), situated off the Warrenpoint Road, is the terminal pumping station for the city. The WwPS receives incoming flows from the greater Newry and Carlingford area at […]

The Shared Waters Enhancement & Loughs Legacy (SWELL) project is an extensive programme of work being led by NI Water working in partnership with Irish Water, the Agri-Food & Biosciences Institute (AFBI), Loughs Agency and East Border Region. Funded under the EU’s INTERREG VA Programme, managed by the Special EU Programmes Body, the €35m project […]

The Shared Waters Enhancement & Loughs Legacy (SWELL) project, funded by the EU INTERREG VA Programme, considered wastewater assets with the greatest potential to improve water quality within the Carlingford Lough and Lough Foyle drainage catchments. This included for a major upgrade to the inlet works at Strabane WwTW. In recent times, excessive flows arriving […]

Warrenpoint is a small town in County Down, situated on the northern shore of Carlingford Lough, approximately 7 miles south-east of Newry. The shared water of Carlingford Lough marks the border between Northern Ireland and Ireland. Due to its scenic beauty and coastal location, Warrenpoint is popular with day trippers and the town can experience […]

Advanced cyclic activated sludge technology with simultaneous nitrification and denitrification and biological phosphorus removal in a single treatment stage

The original treatment works was built in the 1970s in an area carved out of the cliff face. It comprised a screening plant for grit and fat removal, before flows are pumped via a hand-dug long sea outfall 2.5km out to sea. This outfall replaced the original Victorian short sea outfall built in 1874, although […]

The Tideway project is a new £3.8 billion, 25km long combined sewage storage and transfer system currently under construction in London. The project is divided into three design and build contracts: West, Central and East. The scope of works of the Central Section, the largest portion of the project at over half its length, includes […]

The picturesque village of Walton is located within the heart of Warwickshire adjacent to the River Dene. The existing privately owned sewage treatment facility located on the bank of the River Dene was life expired and would often flood, resulting in pollution to the river. An application was made to Severn Trent under Section 101a […]

West Huntspill Water Recycling Centre (WRC) is a Wessex Water facility situated south of Highbridge in West Somerset. This environmentally sensitive site is within a National Nature Reserve and adjacent to a Site of Special Scientific Interest and a Special Protection Area (Bridgewater Bay and the Severn Estuary). The facility serves a catchment of 62,000 […]

Westnewton is a small rural village situated in Allerdale, Cumbria, three and a half miles from the Solway coast at Allonby and eight miles west of the market town of Wigton in the North West of England. The wastewater treatment works (WwTWs) serves a population equivalent (PE) of less than 300. The catchment was previously […]

Investment in Whitlingham WRC was identified by Anglian Water to ensure that the site remains resilient for Norwich’s growing population and support the environment of the River Yare; part of the Norfolk Broads. A full review of the existing assets and support to carry out on-site testing to understand the process limitations, identified potential opportunities […]

Blackburn WwTW, located at Samlesbury near Blackburn, serves a population equivalent (PE) of approximately 400,000 and discharges final and storm effluent to watercourses that are tributaries of the River Darwen, feeding into the River Ribble estuary and ultimately into the bathing waters of the Fylde coast in the Irish Sea. Over the last 12 months, […]

Bolton-upon-Dearne Wastewater Treatment Works serves approximately 25,000 customers in Rotherham. Faced with an Environment Agency consent to reduce ammonia at the works, Yorkshire Water has undertaken a £12.3m, 14-month project to construct a brand new inlet works and install a new treatment process that will greatly improve the quality of water being released back into […]

Brentwood Sewage Treatment Works (STW) is one of Thames Water’s medium sized treatment works. The site is located to the north-east of London between Harold Wood and Brentwood in Essex. The STW treats foul water from the catchment serving West Brentwood, Warley and Pilgrims Hatch. It currently serves a population of 36,500 which will increase […]

Located close to the English Channel, East Worthing WwTW serves a population of 140,000 in a largely urbanised area in West Sussex. In peak wet weather conditions, up to 71 million litres can flow through the site in a day. Due to the urban nature of the catchment, and some large and relatively shallow gradient […]

The large, industrial town of Ellesmere Port in Cheshire is experiencing population growth, thanks to excellent transport links and an array of employment opportunities. The local population is set to rise by a further 10% by 2036, to over 76,000, so upgrades to the Ellesmere Port WwTW are necessary to cope with increased throughput. The […]

Hull WwTW located at Saltend, east of Hull, provides sewage treatment for a population equivalent of over 1 million people, covering an area from the west of Hull to Hedon in the east. The existing treatment works was built over 20 years ago and required some specific upgrading and refurbishment. The primary drivers for the […]

Maghaberry Wastewater Treatment Works (WwTW) serves the Maghaberry area and the local prison in the Lisburn and Castlereagh District Council area, in Co. Antrim, Northern Ireland. The Works is under the control of NI Water and provides primary and secondary treatment. The Works was insufficiently sized to suit the growing local population and the expansion […]

Marston Water Recycling Centre (WRC), near Grantham, serves a population of approximately 63,500 from Marston and the surrounding areas, with a capacity to treat up to 392 l/s of wastewater. The projected population growth in the area is approximately 76,000 until 2031, with the significant proportion of this growth estimated to occur by 2022. Following […]

Operated by United Utilities, the Morecambe sewerage system collects at Schola Green Wastewater Pumping Station (WwPS) located in the west end of the town. From there, flows for treatment are pumped via a 6km long pipeline to Morecambe Wastewater Treatment Works (WwTW), which is situated to the south, near to the village of Middleton. Both […]

Sustainable bio-P removal at small works

Newham Sewage Treatment Works is located on the outskirts of Truro, Cornwall. The site treats wastewater from the city and the surrounding areas which are experiencing a rapid population growth. A £6.8m project was sanctioned by South West Water in May 2018 to provide a new secondary process stream, utilising the novel Nereda granular activated […]

United Utilities is the regional water company for the North West of England, delivering water and wastewater services to 7m people from Cheshire to the Scottish border. Oldham WwTW and Royton WwTW are two major wastewater treatment works located in Oldham, to the north east of Manchester. The Oldham and Royton Integrated Strategy (ORIS) project […]

Rugby STW is situated on the south bank of the River Avon, approximately 1km north of the town of Rugby in Warwickshire. Final effluent from Rugby STW is discharged into the River Avon and needs to meet permits set by the Water Framework Directive (WFD). It provides sewage treatment to a population of circa 107,975. […]

Westnewton is a small village about three and a half miles from the Solway coast at Allonby and eight miles west of the market town of Wigton. The wastewater treatment works is situated on a hillside above the village and treats wastewater for 275 population equivalent (PE) from the village and the local area. The […]

In October 2020, the finishing touches were undertaken at Woolston Wastewater Treatment Works, completing Southern Water’s £100m scheme to transform its works in Southampton, Hampshire. From the waterside, the new age space-like silver cladding that dominates the site is a much different picture from how the site has looked over the last few years when […]

Ardersier is located on the Moray Firth some 11 miles east of Inverness. The wastewater treatment works serves the town of Ardersier and the surrounding area including Inverness Airport and Fort George Barracks. It currently serves a population of less than 2,000 but there are significant developments planned in the area with a long-term future […]

Barston Sewage Treatment Works (STW) is one of Severn Trent’s medium sized treatment works. The site is located to the east of Birmingham in the West Midlands. The STW treats foul water for the catchment serving Solihull, Shirley, Knowle and other outlying conurbations. It currently serves a population of 39,741 which will increase to 76,036. […]

Both Blackburn WwTW and Darwen WwTW discharge final and storm effluent to watercourses that are tributaries of the River Darwen, feeding into the River Ribble and ultimately impacting on the bathing waters of the Fylde coast. Following on from the Blackburn and Darwen WwTWs (2017) article and Blackburn and Darwen WwTWs (2018) article, both published […]

Boughton STW is a medium sized sewage treatment works serving a population equivalent of approximately 13,000 located about 8 miles south-east of Worksop in Nottinghamshire. As part of Severn Trent’s commitment to the Water Framework Directive (WFD) to improve the quality of waterbodies in the region within AMP6, Boughton STW was highlighted to accept a […]

Severn Trent (ST) and Hafren Dyfrdwy (HD) have been challenged to meet a large number of new, tight phosphorus permits as a result of the Water Framework Directive (WFD). Historically, only Total-P levels down to 1 mg/l have been enforced by the Environment Agency, but in AMP6 and AMP7 a big step change in expectations […]

The Coleshill Food Waste Anaerobic Digestion Plant processes 48,500 tonnes per annum of food waste collected generally within 30 miles of the site. The site has been in continuous operation since January 2015 when it first received commercial customers. It is currently estimated that this project can deliver 5.5GWh per annum (electrical equivalence) of new […]

Located to the south-east of Nottingham, Severn Trent Water’s Cropwell Bishop Sewage Treatment Works (STW) serves 700 residential premises in the village and a number of local businesses, including the Cropwell Bishop creamery, which contributes a significant phosphorous loading to the catchment. It also receives pumped sewage flows from the adjacent village of Cropwell Butler. […]

Davyhulme Wastewater Treatment Works (WwTW) is United Utilities (UU) largest, serving over 1.3 million customers across Greater Manchester. Built in 1894, it has seen continuous development in wastewater treatment including the invention of the activated sludge process (ASP) by Ardern & Lockett in 1914. Incoming flows from the combined sewer network can reach 30m3/s, the […]

Earl Shilton Sewage Treatment Works (STW) is situated in south west Leicestershire and serves a population equivalent of 11,833 comprised mainly from domestic sources from Earl Shilton and Barwell. There has been a STW in this location since the 1960s and the current process workstream includes preliminary treatment, primary settlement, secondary filtration, secondary settlement and […]

Efficient phosphorus removal for tertiary phases of wastewater treatment works to achieve <0.5mg/l of Total Phosphorus

Finham Sewage Treatment Works (STW) serves a population equivalent of 430,470 for Coventry and its environs. The existing processes include preliminary treatment, primary settlement, a plug flow activated sludge plant (ASP) and final settlement tanks. The site is also a sludge reception centre and has the capability to treat indigenous and imported sludges. The sludge […]

Goscote STW is an activated sludge process (ASP) works located near Walsall in the West Midlands which serves a population equivalent (PE) of 120,806 (including trade). The site discharges into the River Tame catchment. Its upgrade was key to meet a tighter environmental permit in AMP6, being 10 mg/l BOD, 1.3 mg/l ammonia and 0.2 […]

Ingoldisthorpe WRC was identified by the EA under ‘no deterioration’ as requiring additional measures in order to address the tightening of ammonia and phosphorus levels (1mg/l NH3-N and 4.5mg/l P) in order to sufficiently treat all required flow, meet discharge consents and maintain the quality of the receiving water bodies. The existing works serves a […]

Inverurie Wastewater Treatment Works lies on the banks of the River Don in Aberdeenshire, at the confluence with the River Urie, and serves a current population of approximately 28,000 people with substantial future growth within the catchment forecasted. This project has been initiated by Scottish Water to provide compliance with new nutrient discharge consents under […]

Kendal WwTW is the main treatment facility for the area servicing a large residential and tourist catchment, with a population equivalent of 82,384. The works has an existing consent of 25 mg/l biological oxygen demand (BOD) 45mg/l suspended solids, 5 mg/l ammonia, and an annual average phosphorus permit of 1 mg/l, with a flow to […]

Over the last two decades the concept of municipal sewage being an expensive to treat waste stream has slowly become surpassed by renewable and sustainable opportunities that re-label wastewater treatment works as water resource recovery facilities (WRRF), sludge recycling centres (SRC) or sludge treatment facilities (STF) to name but a few. Incentivised by UK Government, […]

Medlock Quality Programme is part of United Utilities AMP6 investment programme across the North West and is the third Nereda® Reactor Plant to be operated by United Utilities. The scheme can be split into two distinct areas: (i) the upgrade of Failsworth WwTW to meet the new discharge consent and reduce the volumes of spills […]

The Curdworth Sludge Lagoon is located within Severn Trent’s Minworth STW site, alongside the Minworth Final Effluent Channel situated to the north and the River Tame to the south. It was constructed during the early 1900s. Filling operations ceased during the late 1940s and it has remained in its current state since that time. The […]

United Utilities’ Morecambe sewerage system collects at Schola Green Wastewater Pumping Station (WwPS) located in the west end of the town. From there, flows for treatment are pumped via a 6km long pipeline to Morecambe Wastewater Treatment Works (WwTW), which is situated to the south, near to the village of Middleton. Both sites have sea […]

Pegswood Sewage Treatment Works (STW) is a Northumbrian Water (NW) site located 16 miles north of Newcastle-upon-Tyne and 2 miles north-east of Morpeth, Northumberland. The treatment process comprised inlet screens, flow control and storm separation to storm tanks, two Dortmund pyramidal settlement tanks, four biological percolating filters, with a circular humus tank discharging final effluent […]

Rothera Research Station is a remote facility in Antarctica which is operated by the British Antarctic Survey. Incremental growth in the staffing levels at the station had led to the overloading of the existing wastewater treatment plant and, with the commencement of construction work on site, additional treatment capacity was required. By selecting the most […]

Scaynes Hill Wastewater Treatment Works serves a population of approximately 38,000 from Haywards Heath and surrounding areas in West Sussex, with capacity to treat up to 337 l/s of incoming wastewater flow. The treatment works also receives imported cess via tanker from customers not connected to the mains drainage system, plus liquid sludge via tanker […]

Seaham Sewage Treatment Works (STW) receives and treats raw sewage from Seaham and the surrounding area. Constructed in phases between 1996 and 2001, the works serve a population of over 23,000 people. The works were originally built to ensure compliance with the Bathing Water Directive, as the site discharges directly into the North Sea via […]

Stocksbridge WwTW is located in the village of Deepcar on the outskirts of Stocksbridge, approximately 7km northwest of Sheffield city centre. It currently serves a population of 13,000, but this is expected to grow towards 15,000 by 2030. Major housing development is ongoing near the existing works, and as part of this Yorkshire Water reached […]

Stromness is a town situated around the sheltered bay of Hamnavoe on the west of Orkney’s mainland. It has a population of approximately 2200 inhabitants and a population equivalent (PE) of 2,600, due to the local industry; which is expected to grow to 3,600 in the years ahead. The town has a dramatic and unique […]

Situated in Staffordshire, close to the Derbyshire border, Uttoxeter STW serves a mainly domestic population from the town itself. Following catchment modelling, it was determined that there will be significant growth in the population, reaching 24,498 population equivalent in 2035. This increased population would mean that the existing inlet works would not have sufficient capacity […]

Walsall Wood Sewage Treatment Works was a trickling filter site discharging into the Ford Brook, part of the River Tame catchment. Under the new Water Framework Directive, the site was required to comply with stringent new standards for phosphorus and ammonia levels in wastewater (BOD: 10 mg/l, NH3: 1.9 mg/l, Total P: 0.5 mg/l). The […]

Woolston WwTW uses a conventional activated sludge plant (ASP), built in 1966, treating sewage flows from part of the Southampton conurbation, serving a population of approximately 62,000 people. The site occupies an area of 1.26 hectares. The existing sewerage system which feeds into the WwTW collects both wastewater and stormwater from the Woolston catchment area. […]

Ashford Wastewater Treatment Works is located in Kent alongside the M20 motorway, near the River Great Stour to the South of the Kent Downs (Area of Natural Beauty). The Town of Ashford has a population of approximately 110,000 people. The WwTW serves Ashford and surrounding areas and is supplied by five local pumping stations taking […]

The picturesque coastal town of Ballycastle is located on Northern Ireland’s scenic North Antrim Coast. This popular tourist spot attracts many visitors, who come to take in the beautiful scenery, as well as passing through on their trip along the famous Wild Atlantic Way. Visitors come from all over the world to see the nearby […]

Jersey is the largest of the Channel Islands and is a Crown Dependency located off the coast of Normandy, France. The island is governed by the States of Jersey (SoJ) which has responsibility for the management of the Island’s finances and operation of its public services. Jersey does not sit within the European Union but […]

Following on from the Blackburn and Darwen WwTWs (2017) article, the site at Samlesbury, Blackburn, has been prepared for the construction of the 72,000m3 structure which will house the innovative Nereda® aerobic granular biomass technology. The Nereda® system will treat crude sewage that has only received preliminary treatment and has been developed to treat the […]

At present, the UK wastewater treatment industry is facing an increasing number of challenges from a variety of different drivers both from a regulatory standpoint and with regards to increasing public awareness of pollution events. Such challenges include the need for a better effluent quality with low levels of phosphorus, ammonia, and total nitrogen (among […]

Chalton Water Recycling Centre Water Recycling Centre (WRC) receives influent from the north parts of Luton with an average flow of 240 l/s and a population equivalent of 89,000. The plant has to treat all flows with no storm overflow. The existing works is fed under gravity by three inverted siphons and has seen peak […]

The town of Chorley, in Lancashire, is mainly residential and much of the surrounding land is dedicated to agriculture and heritage buildings. Chorley Wastewater Treatment Works (WwTW) is located close to a small number of residential houses with a shared access road. C2V+, a joint venture between CH2M (now Jacobs) and VolkerStevin, was awarded a […]

As of May 2017 there are 137 designated shellfish protected waters in England and of these, 25 are located within the South West Water region. It is estimated that the industry associated with shellfish production areas in the South West is worth £5.35m per annum (figure from EA based upon Shellfish Association of Great Britain […]

Thames Water’s Deephams Sewage Treatment Works (STW) is located in Edmonton, North London and treats a 989,000 population. Three drainage catchment areas of Lea Valley, High Barnet and Tottenham flow to the works, the ninth largest plant in the UK. The original effluent treatment process was built between 1956-1966 and had been updated at various […]

East Tanfield Sewage Treatment Works (STW) is a Northumbrian Water Group (NWG) site located 11 miles north-west of the City of Durham and 9 miles south-west of Newcastle-upon-Tyne. It consists of two distinct sites: a ‘lower’ site comprising a terminal pumping station (TPS) with emergency storage tanks adjacent to the Houghwell Burn watercourse; and an […]

Efficient phosphorus removal for tertiary phases of wastewater treatment works with low energy consumption

Great Dunmow Water Recycling Centre (WRC) is located a few kilometres to the east of Stansted Airport in Essex and serves a population of approximately 10,000 people. Due to ongoing capacity limitations and operational issues in the existing works, Anglian Water elected to construct a new treatment plant on the site to serve the current […]

Hayle STW is located at the end of the Hayle estuary in West Cornwall approximately 7 miles east of Penzance.The area immediately surrounding Hayle STW has a small population made up of St. Erth Village. The site itself is located within a large plot bordered to the north by the West Coast Main Line, and […]

Highworth Wastewater Treatment Works (WwTW) is located at Pentylands Lane, Highworth to the northeast of Swindon. The treatment works currently serves a population of approximately 10,000 customers, with an average daily flow of 1,720m3 per day and a peak flow of 55 l/s. The works is Royal HaskoningDHV’s first full-scale Nereda plant in the UK. […]

Following decades of investment, the UK has a comprehensive sanitation system and a legacy of wastewater treatment plants. As environmental standards continue to tighten, many of these older assets require an upgrade to provide additional treatment capacity and to meet higher quality standards. The conventional approach for many years has been simple: build more tanks […]

Inverurie WwTW is located in Aberdeenshire in the north-east of Scotland and provides sewage treatment for Inverurie and the surrounding area including Blackburn, Kintore and Port Elphinstone. It currently serves a population of 28,000, but Inverurie is one of the most rapidly growing towns in terms of population in the UK, with an estimated population […]

The Yorkshire Water sewage sludge incinerator at Knostrop WwTW is approaching the end of its asset life in AMP7. This, along with high operating costs has driven a business need to review the long-term treatment of sludges in the Yorkshire/Leeds catchment. Following a strategy review, Yorkshire Water Services (YWS) decided to progress with conventional mesophilic […]

Llanfaethlu Wastewater Treatment Works (WwTW) is situated to the north east of the village in Anglesey, North Wales and is owned and operated by Welsh Water. Constructed in the 1960s as a conventional gravitational treatment works, the process utilises primary settlement, stone media trickling filter and humus settlement discharging to a grass plot, together with […]

Minworth is Severn Trent Water’s (STW) largest sewage treatment works serving an population equivalent (PE) of 1.75 million from Birmingham, with a full flow to treatment of 1,070Ml/d. The plant treats sludge from a PE of 2.3 million, which is made up of indigenous sludge plus imported sludge. As part of Severn Trent’s Capital Investment […]

Minworth STW is Severn Trent’s largest sewage treatment works and serves a population equivalent of 1.75 million from Birmingham with full flow to treatment of 1,070Ml/d. The works treats sludge arising from a population equivalent of 2.3 million which is made up of indigenous sludge plus imported sludge from the nearby Coleshill STW and various […]

The Morecambe sewerage system collects at Schola Green Wastewater Pumping Station (WwPS) located in the west end of the town. From there, flows for treatment are pumped via a 6km long pipeline to Morecambe Wastewater Treatment Works (WwTW), which is situated to the south, near to the village of Middleton. Both sites have outfall pipelines […]

Welsh Water set out its vision in its Sewage Sludge Strategy 2040 how it intended to deal with the number one waste management challenge all water utility providers face, the sustainable management and disposal of wastewater sludges. With ever tightening nutrient and heavy metal limits on agricultural usage, and more pressure than ever for companies […]

The European Union’s (EUs) revised Bathing Water Directive (rBWD) (2006/7/EC) came into force in March 2006 replacing Bathing Water Directive (BWD) (76/1160/EEC). The overall objective of the revised directive is the protection of public health. From November 2015, a new classification system for bathing waters (excellent, good, sufficient or poor) was introduced, with more stringent […]

Preston WwTW serves a population in excess of 250,000 and has six sub-catchments: Lytham, Fairhaven and Freckleton within the Fylde District to the west, Lea Gate and Watery Lane to the east within the Borough of Preston and Penwortham to the southwest within the South Ribble District. United Utilities (UU) has invested £20m during AMP6 […]

Oldham and Royton WwTWs, operated by United Utilities, are located approximately 4km apart, close to Manchester. The WwTWs were aging facilities, and in need of an upgrade for the river water quality to meet European standards, and to serve an increasing population of over 185,000. United Utilities considered various options to improve the wastewater treatment […]

The 2010 Shellfish Waters Directive placed a new obligation on South West Water (SWW) to endeavour to meet the Shellfish Waters Regulations ‘Guideline’ Standard. (Class B). The Shellfish Waters (SFW) programme of work was to meet legislative requirements to protect or improve designated shellfish waters to support shellfish life and growth, contributing to the quality […]

Stanbridgeford Sewage Treatment Works (STW), lies approximately one mile south of the village of Stanbridge in Bedfordshire and as of 2016, the population equivalent (PE) of the works was 15,305 and the domestic population served was 15,051. The treatment works discharge into the adjacent Ouzel Brook, a tributary of the River Great Ouse. Regulations from […]

Strongford STW is located at the north west end of Severn Trent’s region and covers a significant catchment in and around Stoke-on-Trent with a population equivalent of 350,000. The Strongford digestion plant currently processes 34 tonnes dry solid per day (tds/day) indigenous; and 14 tds/day liquid imports which includes 7 tds/day from the recently closed […]

Built in 1966, Woolston Wastewater Treatment Works (WwTW) uses a conventional Activated Sludge Plant (ASP) to treat sewage flows from part of the Southampton conurbation. Serving a population of approximately 62,000, the site occupies an area of 1.26 hectares. The existing sewerage system which feeds into the WwTW collects both wastewater and stormwater from the […]

Allonby Wastewater Treatment Works (WwTW) is located to the north of the coastal town of Allonby, Cumbria, serving a population equivalent of less than 1000 within a dominantly rural catchment area. The works provides treatment via a three stage process, including rotating biological contactors (RBCs) and ultraviolet dosing. Allonby WwTW is situated on the coast […]

Wessex Water’s Bristol STW is the largest sewage treatment works within south west region, serving approximately a catchment of 1.1 million people. The works also accounts for more than 50% of region’s sludge treatment. It treats around 100 tonnes dry solid (TDS) per day of indigenous sludge as well as imported sludge to a compliant […]

The Basingstoke Sludge Treatment Centre (STC) incorporates liquid and caked, raw sludge import facilities together with thermal hydrolysis and anaerobic digestion plant which will process 53tDS/day of sludge from Basingstoke, Farnham, Fleet, Guilford and Newbury. This will fulfil Thames Water’s strategy to cease unsustainable liming activities at the four satellite sites up to the 2036 […]

Blackburn and Darwen WwTWs are two of United Utilities’ major treatment works and are located near the former mill town of Blackburn, Lancashire. The Blackburn and Darwen WwTW Integrated Solution (BDIS) project combines new river water quality and bathing water drivers at these two works into a single integrated project. The integrated approach will give […]

Davyhulme WwTW is United Utilities’ largest wastewater treatment works, which serves over one million people in Greater Manchester; it has been undergoing a £200 million modernisation process, which started on site in 2015 and is now close to construction completion. The upgrade is required to ensure it complies with tighter discharge consents and the impact […]

While the investment by the regulated water sector of England and Wales is governed by a five-yearly cycle, this investment relates to what are long-lived assets. Decisions about when to undertake capital investment and what to include in a capital programme have a direct bearing on the operating costs associated with the assets. Ultimately the […]

East Worthing WwTW in Lancing serves the Worthing and Sompting catchments in West Sussex, located on the south coast of England. The works provides treatment capacity to a population equivalent of 136,000, which is expected to rise to 155,000 by 2030. East Worthing WwTW is an activated sludge plant providing secondary treatment for flows up […]

Fluxton and Ottery St Mary STWs are located in the Otter Valley, East Devon. The town of Ottery St Mary has a population of 4898 and is situated on the River Otter, approximately 10 miles east of Exeter, and the nearby hamlet of Fluxton has a population of approximately 99. The Fluxton site itself is […]

Hesketh Bank Wastewater Treatment Works (WwTW) serves a population of approximately 5,800. The catchment of this Lancashire village is mainly residential and much of the surrounding land is dedicated to agriculture. The treatment works is on the edge of the village and is situated close to the River Douglas, near its confluence with the Ribble […]

In 2008, Southern Water completed significant improvements to the wastewater treatment infrastructure serving the North Thanet catchments of Margate and Broadstairs to meet the requirements of the Urban Waste Water Treatment Directive. The existing marine head works at Joss Bay, Broadstairs and at North Foreland, Margate were upgraded to process screened flows and remove grit, […]

South West Water (SWW) has an ODI target to supply 20% of its energy from renewable sources by 2020. This translates to a volume target of 50GWh renewable output within the final year of K6. This project will contribute 9.4GWh towards this 50GWh target by 2020 by optimising six sludge treatment centres (STCs), which operate […]

Minworth STW is Severn Trent Water’s largest sewage treatment works and serves a population equivalent of 1.75 million from Birmingham with full flow to treatment of 1,070Ml/d. The works treats sludge arising from a population equivalent of 2.3 million which is made up of indigenous sludge plus imported sludge from the nearby Coleshill STW and […]

Mogden Sewage Treatment Works is the second largest in the UK. The first phase was built between 1931 and 1935 at a cost of £1.7 million and covers an area of 55 hectares. The facility treats wastewater from a population equivalent of 1.9 million across a 60 square mile catchment area of north and west […]

Nereda® is an innovative, sustainable and cost-effective biological wastewater treatment technology that purifies water using the unique features of aerobic granular biomass; purifying bacteria that create compact granules with superb settling properties. The technology was originally discovered by the Delft University of Technology in the Netherlands, and developed in a unique public-private partnership between the […]

Netheridge Sewage Treatment Works (STW) is one of Severn Trent Water’s key sites in the south west of the region serving the city of Gloucester, discharging final effluent to the River Severn. The works currently serves a population equivalent of 197,940 which is predicted to increase to 218,815 by the 2034-35 design horizon. The site […]

Mott MacDonald Bentley (MMB) has been delivering the Wastewater Minor Works sub-programme for the Northumbrian Water Group (NWG) since 2006 with the number of schemes delivered annually increasing year-on-year. The team must deliver schemes for less than £150,000, and are targeted at maintaining wastewater compliance. The projects are batched where practicable, and estimated efficiencies in […]

United Utilities is the regional water company for the north west of England, delivering water and wastewater services to 7m people from Cheshire to the Scottish border. Oldham WwTW and Royton WwTW are two major treatment works located in Oldham, to the north east of Manchester. The Oldham and Royton Integrated Strategy (ORIS) project combines […]

The concept of sewage treatment plants as energy factories originated in the Netherlands in the early 2000s, and Sweco (formally Grontmij) was a founder member of the Dutch-led ‘Energy Factory’ projects. Sweco then expanded the potential benefits, prompting a 2012 rebrand to ‘The ReGenerator® Concept’. The ReGenerator® methodology sees Sweco sourcing new pan-European sustainable technologies […]

Retford STW is located to the north of the town of Retford, Nottinghamshire. It serves a population of approximately 26,000. The project was to address capital maintenance works which includes the replacement/refurbishment of expired life items and the addressing of operational risks. The inlet works screens were capturing approximately 15% rags which was creating a […]

Yorkshire Water’s Saltend WwTW had a history of environmental under-performance which resulted in a significant number of customer complaints due to odour. Between September 2015 and May 2016, £18m of refurbishment and upgrade work was carried out on a fast track basis to improve this performance. Commercial arrangements were adjusted from normal framework conditions to […]

Shirebrook STW is located approximately 5 miles north of Mansfield town centre and caters for a population equivalent (PE) of 12,000. As part of the AMP6 Chemical Investigations Programme, Severn Trent Water is required to carry out a full scale trial of a ‘proprietary’ iron dosed sand filter plant on a works serving between 10,000 […]

Under the Water Framework Directive (WFD) all water environments in the UK must meet ‘Good Chemical Status’ for a number of chemicals. The chemicals cover a range of over 70 substances (often referred to generically as priority substances) including metals, pharmaceuticals, combustion products and regular sanitary determinands (including phosphorus). The Environment Agency instigated a national […]

UK introduction of the revolutionary Volute disc press at Nigg WwTW leads to significant savings through high efficiency sludge treatment

County Wicklow is situated on the east coast of Ireland, south of Dublin. Kilcoole WwTP is located off Sea Road and the surrounding topography is agricultural farmland. The WwTP at Kilpedder is a bordered by woodlands and private dwellings, while access to Redcross WwTP is by a caravan park in Redcross. All three sites are […]

Built in 1966, Southern Water’s Woolston WwTW uses conventional activated sludge plant (ASP) to treat sewage flows from part of the Southampton conurbation, serving a population of approximately 62,000 people. The site occupies an area of 1.26 hectares. The existing sewerage system which feeds into the WwTW collects both wastewater and stormwater from the Woolston […]

Bakewell is located in the heart of the Peak District National Park and as such attracts thousands of visitors each year. Bakewell is a thriving town with a cattle market that trades every Tuesday, a showground that hosts numerous national events each year and is a great base to explore the surrounding National Park. Bakewell […]

Project Omega is a 25 year Public Private Partnership contract issued by Northern Ireland Water (NI Water) to upgrade, operate and maintain existing wastewater treatment works (WwTW) and wastewater pumping stations (WwPS) at a number of locations across Northern Ireland, equivalent to approximately 25% of the province’s wastewater treatment capacity. The contract also provides a […]

In May 2015 Thames Water Operations identified emergency works on Activated Sludge Plant (ASP) 2 at Beckton STW in east London. The work was necessary to address the asset health and resilience of the treatment works, meet performance commitments and ensure satisfactory sludge disposal. The project was a fast track design and implementation with early […]

Blymhill STW is a small rural RBC and reed bed STW based in south Staffordshire which treats flows from a PE of about 551. This was set to increase to a design population of 844 PE due to predicted non-residential domestic load. The catchment consists of several individual villages, plus the non-domestic contribution from Weston […]

South West Water’s Camels Head WwTW, is located in a residential area of Plymouth, Devon and serves a population equivalent (PE) of 41,500. Capital maintenance is required due to issues with current full flow to treatment (FFT) compliance, which is constrained by the primary settlement tanks (PSTs) capacity, odour from the site, inlet screening and […]

Davyhulme WwTW is the location for United Utilities’ sludge balanced asset programme (SBAP) facility. This centralised treatment hub for sludge processes all of the indigenous sludge from Davyhulme which serves over one million people along with sludge imports from other United Utilities WwTWs. The centralisation of sludge treatment at Davyhulme has taken place through a […]

Located in the North West of England, Davyhulme wastewater treatment works (WwTW) is United Utilities largest works, serving over 1 million customers across Greater Manchester. The works are currently facing several future challenges, namely (i) the tightening of the ammonia (NH3) permit limit from 3mg/l to 1mg/l to comply with the requirements of the Freshwater […]

Deephams STW, which is located in East London, is the ninth largest works in the UK and serves a population equivalent of 891,000 (as of 2011) [1]. In order to cater for increasing population growth, meet new wastewater quality standards, be prepared for weather variations and to replace an ageing plant, a major upgrade has […]

Five Fords WwTW is a sewage works just outside Wrexham in north-east Wales blending passive and activated sludge treatment. The works is named because there are five fords crossing the River Clywedog (Afon Clywedog) locally. The works covers a large area of land and is neighbour to fields leased to local farmers. The sewage treatment […]

The village of Glentworth is approximately 10 miles north of the city of Lincoln and one mile south-west of Caenby Corner. The water recycling centre (WRC) is located near the village in the West Lindsey district of Lincolnshire, and falls under the control of Anglian Water. Glentworth WRC serves a catchment area of 1250 PE […]

The Northumbrian Water Group (NWG) Howdon site, located on the banks of the River Tyne to the east of Newcastle is the largest sewage treatment works on the eastern coast of England. The plant is capable of treating in excess of 40,000 TDS/annum of indigenous and imported sludge using a Cambi Advanced Anaerobic Digestion (AAD) […]

United Utilities’ (UU) flagship sequencing batch reactor (SBR), constructed in the Wellington Dock heritage site is now complete and in successful operation. The £200mn Liverpool WwTW upgrade scheme has delivered a state-of-the-art works to improve the quality of the water in the River Mersey. The project was part of the £3.6 billion invested by United […]

South West Water (SWW) is currently participating in a National Programme of Trials to investigate the feasibility of using new technologies to achieve very low phosphorus (P) levels in final effluent discharged from sewage treatment works. The trials, which are funded under the Phase 4 NEP, are organised by UK Water Industry Research (UKWIR) to […]

Situated 2 miles from the coastal town of Portishead on the Severn Estuary, Portbury Wharf STW was granted its first consent to operate in 1987. The site underwent a refurbishment in late 2015 and currently services Portishead and the surrounding area, equating to a population in the region of 32,000. Portbury Wharf is comfortably equipped […]

The concept of sewage treatment plants as ‘energy factories’ originated in the Netherlands in the early 2000s. The Dutch water boards came together with the express aim of treating wastewater with a significantly reduced energy consumption and to increase energy production, such that their sites could be seen as true ‘energy factories’. The energy factory […]

Wetherby STW is the wastewater treatment facility for the market town of Wetherby and its surrounding area. It has a population of approximately 23,000 people and is mainly unaffected by seasonal variations other than the local Wetherby Race Course. As there is no direct connection from the racecourse to the sewage treatment works, all racecourse […]

Construction works are now in their second year on Southern Water’s £63 million environmental improvement scheme to redevelop and completely modernise Woolston WwTW. (The first year of the Woolston WwT Scheme was detailed in the 2015 edition of UK Water Projects). The existing works uses a conventional activated sludge plant (ASP), built in 1966, treating […]

Centralised sludge treatment facilities – phase 2 (2015)

£16m of improvements to sludge digestion facilities

First below ground structures using DfMA including pre-installed M&E kit & corporate responsibility/environmental best practice

AMP 5 supply and demand upgrade

£2m improvement scheme to significantly improve the quality of stormwater discharges

Growth scheme – additional treatment capacity for existing sewage treatment works

Thames Water’s £250m flagship project in London is currently one of the largest water projects in the UK

New acid phase digestion plant constructed to treat imported sewage sludge arising from the largely rural catchment of Severn Trent Water’s northern area

Yorkshire Water -New construction and refurbishment of existing assets to provide an increase in treatment capacity and improved performance

Installation of a constructed wetland as a full treatment facility using the Phragmifiltre® system

Installation of CASS SBR plant for the secondary treatment process that will keep the River Mersey clean

Fully innovative design for manufacture & assembly approach to new assets

£80m project in the Oldham to improve the environment, future-proof wastewater treatment assets and optimise operation and maintenance

Phosphorus removal to meet new environmental consent concentrations for final effluent discharges into Carmarthen Bay

NI Water’s innovative new pilot wetland solution

Network and growth upgrade scheme

Work has started on a £63m environmental improvement scheme to redevelop and completely modernise Woolston WwTW. The existing works uses a conventional activated sludge plant (ASP), built in 1966, treating sewage flows from part of the Southampton conurbation, serving a population of approximately 62,000 people. The site occupies an area of 1.26 hectares. The existing […]

Ashford WwTW is located approximately 15 miles north-west of Folkestone in Kent. Prior to Southern Water’s £12.6m expansion, the works served a population equivalent of 100,000 people. Starting in June 2012, this extensive project will ensure that the site continues to serve the growing population of this busy catchment, which is forecast to rise to […]

New inlet works – concept, planning, design and procurement strategy

New inlet works – procurement and construction

New stormwater storage facility to improve bathing waters of Morecambe Bay

Upgrades complete; helping to make the Thames a cleaner, healthier river

Advanced sludge digestion facility (ESDF) powers up at Beckton and Crossness

Peacehaven WwTW – handover and completion of the ‘Cleaner Seas for Sussex’ project

£2.5m upgrade of major sewage treatment works requiring additional screening

Reducing the risk of emergency releases of wastewater into Langstone Harbour by increasing performance

Advancing the frontiers of enhanced digestion treatment

A sustainable wetland provides Scottish Water with an asset that treats stormwater overflows & provides a habitat for a wide variety of wildlife

A technically challenging project, with significant ecological, environmental and geographic constraints

Architectural design of the main sludge processing and distribution building

Optimising the sludge treatment facilities with an innovative ‘bagel’ acid phase digester

First UK installation to utilise the Phospaq, UASB+ and Anammox technologies in a single process solution

Restoring digestion efficiency and achieve phosphorus permit compliance

Replacing two existing inlet works with a single process improves the reliably & effectiveness of preliminary treatment

New sludge digestion facility with an increased treatment capacity

Reducing the impact of a large tourist population whilst ensuring that consent was not compromised

First time sewerage within the Derbyshire village including gravity sewers and a new RBC treatment plant

Modifications to improve the efficiency of the sludge treatment process systems in the Lancashire/Merseyside area

Filter refurbishment and modification works to a medium sewage treatment works

Scottish Water’s Bundle 25A project improves water quality of the River Clyde and its tributaries

Designing and installing the next generation of submarine outfall pipelines in the North West

Construction nears completion with the project moving smoothly into fit out and commissioning phases

Overcoming challenges with careful planning to deliver a robust process solution & reduced nutrient emissions

Southern Water doubles wastewater treatment capacity at Winchester to provide for future population growth

Scheme to treat wastewater in line with consent requirements for phosphorus, BOD and ammonia under the EU Habitats Directive

Replacement of inlet works and upgrades to sludge dewatering facilities at a WwTW near Portsmouth

£16.5m programme at WwTWs across NW England aimed at reducing the release of phosphates in the environment

Major capital efficiencies on FFD scheme achieved through early contractor involvement and value engineering

MBBR and DAF solution: an innovative process solution to enhance performance for Dŵr Cymru Welsh Water

Major upgrade to largest sewage treatment works in Somerset as part of a staged set of improvements

A major upgrade to an existing works, with a particularly complex construction & commissioning sequence

Reducing risk and maximising the gains of innovation in the delivery of a new oxidation ditch plant

Yorkshire Water’s £40m investment to achieve ‘excellent’ bathing water standards in Bridlington

IFAS process within an existing structure removed the need for extensive new build

Ashford is located approximately 15 miles north-west of Folkestone in Kent. The wastewater treatment works currently serves a population equivalent (PE) of 100,000 which is forecast to increase to 130,000 by 2020. Southern Water is investing £12.6m to upgrade and modify the process units at Ashford WwTW to meet future increases in flows and loads […]

£190m upgrade of one of Europe’s largest STWs nears completion, helping to create a cleaner, healthier River Thames

New sludge thickening and dewatering facilities

Complex wastewater treatment upgrade project to protect the quality of bathing water

Construction upgrade encompassing the installation of new RBC and aerated reed beds in Gloucestershire

New sludge treatment facility with a 5-year payback saves Yorkshire Water £4.5m/year in operating costs

Peacehaven WwTW – commissioning to operations

Construction of package sewage treatment works to eliminate unconsented discharge to highway watercourse

Part of Thames Water’s London Tideway Improvements programme to create a cleaner, healthier River Thames

Thinking ‘outside the pipes’ to deliver a cost effective solution to meet demands of a growing population

Biostyr® BAFF plant refurbishment

Innovative design & construction techniques lead to significant safety improvements & cost savings

AMP5/6 Quality Upgrade Phase 1 – Engineering and design support

Innovative approach to design and construction of the new Bio-P activated sludge plant

An e5 alliance major projects programme scheme to upgrade the existing sewage treatment works

A holistic approach to meet future phosphorus consents

Yorkshire Water: Refurbishment and asset replacement for FFD compliance

New drainage system and pollution control ensure a greater level of protection for the island’s water supply

A new single-piece plant to meet Severn Trent Water’s extremely stringent requirements

£6.8m underground storage tank to improve performance & reduce the number of spills into the Dee Estuary

Inlet screens and screenings handling plant replacement

Critical refurbishments needed to improve the quality of the final outlet

United Utilities keeping the Mersey clean with the AMP5 upgrade project

New storm UV plant to disinfect stormwater prior to discharge into the Duddon Estuary

Extension and refurbishment project for Thames Water as part of the London Tideway Improvements

An £8m NI Water investment to meet future bathing water standards

Delivering environmental improvements and increasing capacity to meet population growth

Realising efficiencies by batching four Severn Trent Water sites with chemical dosing plant issues into one contract

New inlet works to prevent compliance problems

£6.4m AMP5 refurbishment of a 1960s WwTW in Cheshire

Phosphorus removal under the Urban Waste Water Treatment Directive and major capital maintenance investment

Acid phase digestion generating green energy with advanced digestion

investment to achieve ‘excellent’ bathing water standards to help Yorkshire’s beaches be amongst the best in Europe

Optimising United Utilities’ wastewater asset base with joint operational and engineering teams

Optimising sustainability in wastewater treatment

Primary sedimentation tank odour project

Major upgrade to one of Europe’s largest sewage treatment works to create a cleaner, healthier River Thames

A new sludge treatment facility for Yorkshire Water

£300 million environmental improvement scheme to bring cleaner seas to Sussex

The Nitrogen Vulnerable Zone dewatering challenge

Dŵr Cymru Welsh Water resolve pollution and sewer collapses in Historic Carmarthen

Primary treatment and activated sludge plant improvements

Increasing treatment standards and capacity to create a cleaner, healthier River Thames

Tertiary treatment plant utilising Hydrotech® Discfilter technology

Phosphorous removal to a consent standard of 1mg/l under the Urban WwT Directive

£5.5m upgrade to an outdated works to meet nitrogen and phosphorous consent conditions

Severn Trent Water’s innovative programme delivery models

Additional sludge treatment, replacement of PSTs and refurbishment works to existing Yorkshire Water assets to meet FFD consent

Yorkshire Water: Refurbishment and asset replacement for FFD compliance

£5m Investment to construct one of the largest RBC sites in Europe

AMP5 main works upgrade sequencing batch reactor design and construction

£40m works extension project for Thames Water as part of the London Tideway Improvements

Using large diameter rotating biological contactors (RBCs) to achieve challenging treated effluent standards

Works upgrade to comply with the AMP5 quality consent to the 2021 design horizon

The first UK Anammox® plant to yield an environmentally friendly biological phosphorous solution

Sludge pasteurisation plant to treat sewage sludge for safe use in agriculture

Using sand filters to control the principle source of eutrophication throughout the Norfolk Broads

Significant upgrades to 5 WwTWs to protect the natural environment & deliver long term benefits

Major upgrade to increase capacity and generate enough electrical power to run the entire works

Inlet works and odour improvement projects at the largest WwTW in East Scotland

New WwTW using a Membrane Biological Reactor improves River Eden Special Area of Conservation

An example of the challenges faced by water companies in addressing consenting issues on small rural works

Growth scheme – additional capacity for existing STW near Blandford Forum in Dorset

£25m upgrade of major sewage treatment works at coastal town

£7m investment for the Islandmagee Peninsula

Constructing one of the largest green roofs in Europe to bring cleaner seas to Sussex

Project to provide growth, quality & capital maintenance improvements

New RBC plant in County Tyrone with a 2030 design horizon

United Utilities’ new wastewater treatment works in the Yorkshire Dales

Sludge and odour improvement schemes on four STWs and South London

Delivering United Utilities’ sludge balanced asset programme

£40m project to improve storm storage and treatment facilities and the water quality of River Lea

£34m investment in new sewerage collection, transfer & treatment scheme on the Cowal Peninsula

Nitrogen removal scheme to protect the marine habitat in the River Fal

Yorkshire Water – A test case for a new procurement model

Challenging project overcomes technological, sociological, political and economic issues

Delivering Northumbrian Water’s updated sludge strategy

£28m investment to deliver a wastewater solution for Stranraer and the surrounding villages

£27m works extension project to increase treatment capacity and improve quality standards

Sustainable design and construction to deliver effective, low carbon wastewater treatment

S:Max installation to increase sludge screening efficiency

Re-use and upgrade of existing assets for a 2017 interim design horizon

£5m upgrade to an outdated WwTW to meet nitrogen and phosphorus consent conditions

Wessex Water’s £730,000 project to replace ageing control and monitoring system

Efficient procurement to deliver widespread environmental benefits for rural communities

Creating a cleaner, healthier River Thames – an overview

Effective combined treatment solution delivered by NI Water

Programme of improvements to meet new EA consent and habitats drivers

Compliance program overview – Yorkshire Water’s £110m investment to achieve ‘Excellent’ beach standards

£23.5m investment delivers effective wastewater treatment for the Antrim catchment

Improvements to meet anticipated population rise to 150,000 by 2020

Collaborative team effort delivers all round success

Over 250,000 people to benefit from a modern wastewater treatment system

£7m wastewater upgrade project on schedule to deliver higher quality bathing water in popular tourist region

New aeration lane to increase overall capacity

Biological nutrient removal plant

Sustainability through new technology and seasonal consenting

Fixed film technology provides a high standard wastewater treatment

£13.5m investment with a 2030 design horizon

£2.2m dry weather flow exceedence scheme

Yorkshire Water’s £300m freshwater fish directive programme

AMP4 supply and demand project

Upgrade to a major wastewater treatment plant for Andover, Hampshire

New Inclined Bubble Aeration process with a 2030 design horizon

Urban waste water treatment directive scheme

VWS Hydrotech Discfilter tertiary treatment plant for United Utilities

Programme to improve MBR performance in North Wales

A £15m refurbishment project for Thames Water

A compact solution to provide treatment to meet FFD consent

Significant modifications and additions to the existing works needed

Constructing a new WwTW scheme in a highly sensitive AONB requires environmental vigilance

STW upgraded to increase process capacity

£10m scheme to deliver capital maintenance, growth and odour control

AMP4 modifications to the sludge treatment and disposal process

£7 million investment at new WTW in North Wales

Increased efficiency aeration from improved design

Conversion of existing COUF filters to nitrifying sand filters to meet a stringent ammonia consent

Major works at Nabs Head Inlet and Smithfold Main Works

An innovative use of UV technology to achieve bathing water compliance

An update on progress with Yorkshire Water’s £300m FFD Programme

New works to serve Ballymoney and the outlying villages

Amp 4Q phosphate removal project

£4.4m scheme to tackle odour issues in Fife town

£15.4m scheme to provide first time sewerage in Scottish Highlands

A different approach to meeting a new consent

£145 million upgrade – A Beacon Project for the Capital Delivery Programme

£1.95m project to replace dilapidated works

£10m wastewater programme delivering environmental benefits across rural Northern Ireland

Quality (Q) scheme

Project Omega sludge disposal solution – second stream sludge incinerator at Duncrue Street WwTW

£35m scheme increases electrical self generation at sludge centre

Combined heat and power project: Getting the most out of recycling waste

Storm tank discharge and inlet works

£14m treatment plant breathes new life into local river

£2.8m phosphorous removal scheme at 3 STWs

Innovative refurbishment

Largest biological contactor & reed bed in Wales installed

‘Three into one’ wastewater treatment project

A new treatment works for a historic coastal town

Yorkshire Water update on progress with £250m Freshwater Fish Directive

Activated sludge plant conversion & capital maintenance

Collaborative alliance drives value & programme

Reed beds provide £300,000 green solution at former colliery

Upgrade – aeration & mixing units improve performance

Extensive sewerage upgrade improves NI bathing waters

One of six schemes have nitrogen removal as common objective

£11m upgrade of major sewage treatment plant at coastal town

Upgrade of the STW which serves village & nearby communities

Innovative solutions with a joint delivery team environment

Submerged aerated filter looking after the past, the present & the future

Two drivers resolved by refurbishment project

Efficient environmental improvement for newts & humans

Maintaining NWL’s ‘flagship’ sludge disposal site

Odour control projects

Nitrogen removal scheme

£3.2m upgrade for catchment growth

Two new Northern Ireland wastewater treatment works

Replacement screens and screenings handling

£3m expansion to accommodate food park

High rate filter replacement

Introduction to Yorkshire Water’s £220m Freshwater Fish Directive Programme

Endocrine Disrupting Chemicals (EDC) scale pilot plants in Ilkeston, Derbyshire

£5m project is final part of scheme to clean up River Clyde

£3 million upgrade at Yorkshire Water’s Calder Valley Site

A high impact yet low profile solution

New parallel process stream increases treatment capacity

£100m upgrading scheme for Severn Trent’s largest STW

New wastewater treatment works on site of existing headworks

Pre-fab package denitrification Biostyr® plant provides solution

First time WwTW for north of Ards Peninsula

£2.2m project has environmental benefits for island community

SW Water ‘clean sweep’ with £5.7 million sewage scheme

£1.1m project enhances water quality in west of Scotland

Site clearance & plant diversions prior to SBR installation

Early start project for UU’s Southern Area integrated alliance

£6.8m provides new wastewater, collection, transfer & treatment

£58m investment by Severn Trent Water

Innovative design solution for United Utilities

New scrubber effluent treatment plant

Demolition of decommissioned STW & land reinstatement

Belfast North Shore Project

Extensions required to meet growing demands

Phosphorus removal and tertiary treatment plant

Upgrade to meet the future

£7m allocated for new works in top tourist area

£6.7m project gives first time treatment for historic mining area

Brings benefits to residents, visitors & marine environment

Providing new WwTW with minimum disruption

Digester roof refurbishment

£11.7m scheme upgrades performance of STW for Shrewsbury

Most complex wastewater & bathing waters scheme in N Ireland

A review of site selection and methodology

£3.1 million project delivered one year ahead of Ofwat deadline

Underground SAF solves rural WwTW problem

Bio bubble – Secondary Treatment Works Improvements

Discfilter tertiary treatment to meet tighter consent

£12.56m project completed within 14 months – under budget

New £1.2 million WwTW

Ingenious solution saved six weeks, cut risks, and costs

£4.7m biological treatment process protects sensitive waters

£9.5M scheme for Northern Ireland

£4.5 million upgrade at Wessex Water’s south coast plant

Upgrade to meet treatment & new discharge regulations

£18m scheme aids SW’s operational & environmental objectives

Meeting high rate of housing development

Upgrade work to meet consents

“Greenfield” WwTW schemes for coastal communities

Eliminating UID problem & reducing local flooding

Learning lessons adds value for Southern Water

Compliance with EU bathing & urban water directives

£1.9m scheme to protect the environment

£5.65m project provides first time sewage treatment

Perry Oaks processing centre makes way for Terminal 5

Increasing treatment capacity & curing overloading problems

DRD Water Service – Portglenone WwTW improvements

First time system for outstanding natural beauty area

Award winning ‘first time’ system for Yorkshire village

Major upgrade & new ASP meets increasing demand

£4.9m project in environment sensitive area

£20m complex construction project improves effluent quality

Ensuring estuary bound effluent meets new SEPA requirement

£4 million enhancement to ensure effluent compliance

‘Lean working’ pilot scheme delivering success

Quality programme and Capital Maintenance Schemes

£2.6m UU scheme improves effluent quality standard

£9m investment improves bathing water quality at resort

New Bio-Bubble SBR plant to meet higher consent standards

New effluent treatment plant satisfies latest EC legislation

Upgrading to meet BioSolids regulations

Team work & innovation provide solution

Delivering RQO compliance to a challenging programme

Network control system critical to plant’s continuous operation

‘Greenfield’ WwTW for United Utilities on west Cumbria coast

New £12.5m Membrane Bio-reactor to meet Fisheries consent

Part of Welsh Water’s £1.2 billion investment programme

Meeting consent & improving river quality

£23m Crossness STW upgrade fine screening & power supply integrity improvements

Whole catchment solutions challenge the norm

£6.5m project to renew, expand & meet new ammonia consent

£42m scheme improves environment & eases housing shortage

Full SBR treatment & environmental benefits to area

£12m quality & maintenance improvements

£100m upgrade & refurbishing of more than 50 WwTWs

3 example upgrades within five year £120 million investments

Installing tertiary ultraviolet (UV) disinfection

Two RBCs replace 1960s plant to meet new consent

New BAFF plant benefits local environment

£20.6m aids Scottish Water’s operational & environmental objectives

Bio-Bubble SBR – secondary treatment works improvements

Improvements & meeting tighter consent

New oxidation ditches and inlet works

£80m Thames ‘state of the art flagship’ commissions in 2004

AMP 3 team deliver innovative tertiary treatment solution

Northumbrian Water’s new STW for sensitive NE coast area

Delivery of sludge dewatering plant projects – Severn Trent Water’s AMP3 Programme

Meeting new “Safe Sludge Matrix’ requirements

A challenge to meet tighter ammonia standards

First time WwTW on exposed headland for Highland town

Phosphorus removal & tertiary treatment plant

£3 million ‘Centridry’ plant is first in the UK

Upgrade at four plants to meet Directive

Cost effective solution for rural pollution problem

£10m Northern Ireland scheme extends existing facilities

New plant doubles capacity on existing restricted site

Refurbishment of three United Utilities WwTWs – Joint Venture delivers £6m contracts against the clock

Historic setting for £100m environmental improvement project

New £4m CHP plant saves cash & the environment

£8m upgrade improves effluent quality to River Calder

Tertiary stage ensures quality receiving waters for game fish

Upgrading to meet tighter standards & added storm capacity

Scottish Water brings high-tech to the Highlands

£5.5m new works to meet UWWTD

Part of United Utilities massive 2000-2005 investment

First time sewage treatment for estuary towns

New works for old to serve PE of 500,000

Uprating 50% of older secondary treatment to meet new consent

£1.2m plant fabricated off-site delivered to village on five lorries

Tertiary treatment using nitrifying sand filters

New Biological Nutrient Removal Scheme (BNR) for 30,000 PE

£1.3m investment at Cardigan Coast village

£2m upgrade benefits ecology & water based recreation

New storm treatment & UV disinfection

Upgrade & remediation of Scottish Highland RBC plant

Providing secondary treatment in a beauty spot

£4m project improves discharges quality in Poole harbour

Refurbishment & upgrade to meet new consent

Compact plant on brownfield site serves IOW

Bio-Bubble SBR – provides full secondary treatment for all flows

Yorkshire Water’s solution to sudden population changes

Delivery of small sewage treatment works projects

£25.9m scheme delivered target capital & operating costs

Tertiary BAFF plant for small Wilts village

Yorkshire Water to upgrade 4 sites by December 2005

Large thermal hydrolysis plant for Nigg STC

Sludge digestion enhancement using ultrasound technology

New STW & sewerage for Scots island township

Secondary treatment upgrade & storm tank storage

Anglian Water install Bio Bubble SBR plant

New sewage treatment works and pumping stations

Meeting requirements for secondary treatment

Upgrade to full secondary treatment with provision for UV

Adding secondary treatment – ‘like building a ship in a bottle’

Ensuring accuracy to meet standards & requirements

Final phase of £100m environmental scheme

New treatment works, pumping stations and outfalls

Novel SBR system for Orkney Island plant

Three sewage treatment plants come on line in one single project

£60m capital investment in the far north of Scotland

Upgrade using new treatment process

Extension/upgrade presented many challenges

Upgraded STW for prestigious scheme

New WwTW in constrained site will serve two catchments

New £6m works improves effluent quality to River Calder

Phase 2 improvements – aeration

Engineering solution minimises environmental impact

New compact treatment system used in £11m upgrade

15 multi-site projects in AMP3 programme

New pumping station & associated works

New STW & full treatment for Torbay, Paignton & Brixham

£12m UV disinfection programme

Plant extensions to meet increased demand

Amp3 improvements have two objectives

£17m upgrade improves coastal water quality