Case Studies

Ceramic membrane technology and modular build deliveries innovative solution that provides significant benefits and efficiencies

£30m upgrade to enhance water treatment and distribution in Central Borders for improved quality and reliability for local communities

Embsay Water Treatment Works is a standalone 24 ML/d water treatment works operated by Yorkshire Water (YW) and located in the Yorkshire Dales National Park, providing clean water to over 15,000 people in Skipton and surrounding areas. The existing works comprises of clarifiers, rapid gravity filters and a chlorine contact tank with associated chemical dosing. […]

Design and construction of new 2.1 MLD water treatment works, while maintaining operation of adjacent, outdated plant

Design and construction of a new run to waste system and attenuation lagoon to protect water quality

Removing manganese and iron through the first UK water industry application of jet mixing for coagulant mixing at a water treatment works

A novel water treatment plant constructed on the site of an upgraded reservoir to aid Affinity Water’s environmental sustainability commitments

The challenges of designing and constructing the Witches Oak programme of works on multiple sites to a condensed timescale

In 2015, Bournemouth Water was acquired by Pennon Group, who already owned South West Water (SWW). Alderney WTW, located in the north of Bournemouth, is a strategically important water treatment works that supply high quality drinking water to approximately 375,000 customers – nearly 75% of the homes and businesses in Bournemouth Water’s operational area. Alderney […]

NI Water’s Derg Water Treatment Works (WTW) is located in the north-west of Northern Ireland and produces on average 20 Ml/day, supplying water to approximately 10,000 homes to a wide area including Castlederg, Strabane, Omagh and their associated rural areas.  In recent years there have been multiple exceedances of the pesticide, MCPA [(4-Chloro-2-methylphenoxy) acetic acid], […]

In 2019, Wessex Water launched a £51 million project to upgrade the Durleigh Water Treatment Centre (WTC) in Somerset, which had reached the end of its operational life. This project was crucial in maintaining the delivery of high-quality drinking water to a population of 44,500 and was part of the company’s long-term water supply strategy […]

Hampton Loade WTW treats raw water from Chelmarsh Reservoir, located approximately two miles north-west of the site. The reservoir is supplied by the river intake pumps located within the intake building immediately adjacent to the River Severn. The maximum flow that can gravitate to the works from the reservoir is 130-135 megalitres/day (MLD). To increase […]

Located 5 miles south of Chelmsford, Hanningfield Water Treatment Works (WTW) is the largest works operated by Essex & Suffolk Water (ESW). The WTW, which has a peak output of 220 MLD, draws water from the 26,000 ML Hanningfield Reservoir to supply a large part of south Essex. The washwater system is over 50 years […]

Kinnerley WTW is located in rural Shropshire, approximately 10 miles north-east of Shrewsbury. The site treats around 4 Ml/d from a single groundwater source, after which it is pumped to Pant DSR to supply. The existing water treatment process on site includes two aeration towers, chlorine gas, three iron and manganese pressure filters, a balance […]

Lee Road Water Treatment Plant (WTP) provides approximately 70% of Cork City’s total treated water supply. Water is taken from the River Lee, treated and then pumped to reservoirs in the north-west of the city through a system of rising mains. Water is distributed to consumers throughout the city via a network of gravity distribution […]

Littlehempston is a large complex potable water treatment works located near Totnes, South Devon, which has multiple river and reservoir sources. It supplies circa 78,000 properties to an area that includes Torbay, Newton Abbot and Kingsbridge. The original treatment works comprises flat bottom clarifiers (FBC) and rapid gravity filters (RGF), with an additional process stream […]

This project was commissioned by UK Water Industry Research (UKWIR), as part of their efforts to address one of the 12 Big Questions the UK Water Industry is facing, “How do we achieve 100% compliance with drinking water standards (at point of use) by 2050?”. Today, no more than 10% of the total incoming flows […]

Reverse Osmosis (RO) will play an essential role in helping the water industry tackle the numerous environmental and sustainability challenges it faces. Global climate change is causing increased stress on water resources around the world, and this means more reliance on desalination of brackish and sea water sources to provide drinking water security. The technology […]

Seedy Mill WTW treats surface water from the Blithfield Reservoir. The existing supply to the works is gravity-fed up to a maximum of 85 MLD. Additional yield could be provided by utilising three in-line booster pumps located at Nethertown. In addition, there are two individual borehole contributions at Seedy Mill and Trent Valley, which can […]

Upgrading the existing water treatment process with GAC and UV treatment to meet long term taste and odour targets

Tophill Low Water Treatment Works (WTW) is a 68 Ml/d water production plant situated in the East Riding of Yorkshire, approximately six miles from Driffield. The works was originally constructed in 1959 and upgraded in the 1990s to the current configuration. The treatment process presently includes pH correction, ozonation, coagulation, DAF clarification, rapid gravity filtration, […]

Ufton Nervet WTW is a groundwater treatment site located in the Kennet Valley Water Resource Zone, to the south of Reading and supplies an ‘island zone’ of approximately 12,000 properties. Groundwater is pumped through pressure filters for iron removal after which chlorine is dosed before flows enter the contact tank, which is a single cell […]

In the summer of 2020, the water industry was set a challenge by its regulators to identify ways to support the country’s green economic recovery from Covid-19. Severn Trent responded with a number of proposed programmes, including Decarbonising Water Resources (DWR), the subject of this paper. The objective of the DWR programme was to provide […]

Wooler Water Treatment Works (WTW) is fed by four boreholes and supplies up to 160m3/hour of potable water to Wooler and surrounding areas, including several tourist and semi-residential holiday parks serving over 5,000 people. Seasonal fluctuation in demand can increase turbidity and increase iron and manganese concentrations in the borehole water, particularly when flows are […]

Northumbrian Water’s Fontburn Water Treatment Works is located on the outskirts of the Northumberland National Park and produces drinking water for around 50,000 homes in rural and semi-rural areas from Longhorsley and Morpeth, down through Bedlington and as far as North Shields on the River Tyne. The plant produces approximately 20 million litres of water […]

Hanningfield Water Treatment Works (WTW) is the largest water treatment facility operated in the Essex & Suffolk Water supply area. It has been expanded over numerous phases and is currently in need of improvements to its washwater treatment plant in response to changing influent water quality. Hanningfield WTW draws water from Hanningfield Reservoir which is, […]

Northumbrian Water’s Layer Water Treatment Works is located on site at Abberton Reservoir, just outside Colchester in Essex. It is the primal source of water treatment for the reservoir and produces clean drinking water for most of the north Essex region of Essex & Suffolk Water’s operating area, with a designed output of 145 Mld. […]

Northumbrian Water Group (NWG) have recently upgraded their clean water treatment processes at Mosswood and Lumley Water Treatment Works (WTWs). This was to increase quality and resilience of customers’ water supplies by adding ultraviolet (UV) irradiation as an extra barrier of protection. The main innovation of these projects was that they provided a vastly more […]

There is currently limited ability within the existing Northern Resource Zone to transfer water between WTW demand zones during onerous operating conditions or during a major incident at any one of the WTWs. At Carmoney WTW recent flooding at the River Faughan disabled the abstraction plant and raised the pollution risks associated with the nearby […]

Severn Trent is undertaking a programme of rehabilitation works at one its borehole pumping stations (BPS); a groundwater abstraction site consisting of three boreholes (BH1, BH2 and BH3) that provides up to 10 megalitres per day (Ml/d). The three boreholes historically operated in a duty/assist/standby configuration. The site was previously operating at below its intended […]

In May 2018 United Utilities appointed Mott MacDonald Bentley (MMB) to deliver an NEC Option A design and construct project for the upgrade of one of their water treatment works (WTW) in the northwest of England. The project scope comprised upgrade of several key treatment processes to ensure compliance with Badenoch and Bouchier performance recommendations […]

Wing WTW is part of the Anglian Water network, located in the county of Rutland in the East Midlands. The treatment site originally opened in 1977 and was then expanded to include a granular activated carbon (GAC) system in 1989. Morcott WTW, which was commissioned in 2010, is adjacent to Wing with a combined area […]

The small villages of Huisinis and Gobhaig on the Isle of Harris each consist of a few households, but in the summer months the local beach is inundated with campers and campervans. This means that the water demand fluctuates dramatically through the year. The two villages were served by single, basic supplies: Huisinis by a […]

South East Water’s Beenhams Heath WTW serves the surrounding area of Maidenhead and Bracknell. Raw water is pumped via submersible borehole pumps from two off-site locations at Hurley and Waltham. The Hurley flows are directed through a membrane filter before passing through the GACs and combining with the Waltham flows via a collecting tower and […]

Craighead WTW is a new water treatment works located on a greenfield site close to the existing works in the north-east of Scotland. The project objective is to improve the treatment of water to the customers of the town of Huntley and surrounding areas. The existing Craighead WTW has reached the end of its economic […]

Wessex Water’s £50m project to upgrade Durleigh Water Treatment Centre (WTC) in Somerset is progressing on programme and within budget, despite some particular challenges posed by the Covid-19 pandemic. Work at the site near Bridgwater started in 2019. It is the largest single-value scheme delivered by Wessex Water’s Engineering & Sustainable Delivery (ESD) department and […]

Heigham Water Treatment Works (WTW) has supplied clean water to the City of Norwich for more than 100 years. The treatment works supplied an average 42 Ml/d of water into the Norwich Public Water Supply Zone serving a population in excess of 200,000. The £36m scheme was the largest capital investment project within Anglian Water’s […]

Ludham WTW supplied 2.1 million litres a day (MLD) of treated water to 2,464 properties in Ludham and Martham whilst originally being fed by Ludham boreholes, with emergency supply coming from East Ruston boreholes. This £7.6m scheme addressed area growth and abstraction licence challenges by combining different schemes to deliver an efficient solution for customers […]

Maerdy Water Treatment Works (WTW) is located 35km north of Cardiff, supplying up to 16Ml/d potable water to customers in Ferndale and the surrounding area. Raw water is gravity fed from Castell Nos and Lluest-Wen Reservoirs and the quality can be highly variable, particularly following heavy rainfall resulting in a challenge to WTW performance. In […]

Northumbrian Water (NWL) provides water supply and sewerage services to a population of 2.7 million in the north east and 1.8 million in the south east of England, delivering 1,100 MLD of drinking water. Potable water treatment works vary from small groundwater sources to large surface water treatment facilities such as Mosswood Water Treatment Works […]

Severn Trent’s existing Poolend Borehole Pumping Station is located near Leek in Staffordshire and is one of four sources that supply water to Ladderedge DSR. A second borehole source feeds into the Poolend site where both sources undergo water treatment (pH correction, plumbosolvency, marginal chlorination, and ultraviolet (UV)). To ensure continued water security in the […]

Located in Temple, near Gorebridge, in Midlothian, Scotland, Rosebery WTW treats raw water sourced from Megget and Gladhouse Reservoirs which is blended at the works inlet. The blended raw water is generally low in turbidity (2.0 NTU 95%ile), moderate colour (63 mg/l Pt/Co 95%ile), with average to high metals concentrations (55 to 300ug/l Mn, Al, […]

The Sunderland Groundwater Stations (GWS) have historically provided a reliable and cost-effective source of good quality water to the Wearside distribution area. They were mostly built in the late 19th and early 20th centuries and consist of one or more shafts, of up to 150m in depth, into the magnesian limestone aquifer. Each station has […]

The Uckington Borehole Capital Maintenance (BCM) and Restoring Sustainable Abstraction (RSA) Treatment Project set out to achieve the goal of an ecological improvement of the River Worfe while safeguarding the public water supply to the Telford area network. Over-abstraction from the River Worfe was impacting the achievement of Good Ecological Status under the Water Framework […]

Affinity Water own and operate a crucial and long-standing water treatment works which is situated to support the north London water supply infrastructure. Any shortfall in the production of treated water leads directly to the need for importing water from a neighbouring water company. Four groundwater sources are combined and treated at site, all of […]

Ardsbeg Water Treatment Works (WTW) is located in a remote area in the north of Co. Donegal in Ireland and treats water from a lake source to serve local villages of Gortahork and Falcarragh as well as rural farms and dwellings. The WTW was originally built in the 1960s and was modified in 2003. However, […]

The Bray Keleher Water Treatment Works (WTW) abstracts and treats a maximum of 45 Ml/d of river Thames water and is located on Monkey Island Lane, Bray, between Windsor and Maidenhead. The works is of strategic importance in maintaining supplies to the western region of South East Water (SEW). As part of the final determination […]

Raw water has been collected in reservoirs in the Elan Valley in Wales and transferred 118km under gravity through an aqueduct to the water treatment works (WTW) in Birmingham for treatment and distribution to the city’s residents and industries since the beginning of the 20th century. The original infrastructure was constructed over 100 years ago, […]

Situated on the Derbyshire/Nottinghamshire border, Church Wilne WTW serves 600,000 Severn Trent (ST) customers in the East Midlands. Built in 1967 to extract and treat 27 ML/day from the River Derwent, the works has been extended twice to 135 ML/day meeting the needs of both a growing population and increased water quality standards. However, the […]

South East Water’s College Avenue Water Treatment Works in Berkshire supports the Maidenhead water supply infrastructure. It extracts raw water from three boreholes and three chalk wells, which is then dosed with sodium tripolyphosphate (STPP), aerated, passed through granular activated carbon (GAC) absorbers, and finally injected with sodium hypochlorite to super-chlorinate it before entering the […]

Durleigh Water Treatment Centre is located approximately 2km west of Bridgwater, Somerset and is Wessex Water’s second largest surface water treatment works serving a population of 44,500. The site was originally designed to treat up to 28.5 Ml/d, with water drawn down from the 959,000m3 Durleigh Impounding Reservoir. Raw water quality has deteriorated in recent […]

Located to the West of the town of Banchory, Aberdeenshire, Scottish Water’s Invercannie WTW is currently a 49 Ml/d water treatment works which serves the local population as well as providing raw and treated water to Mannofield WTW in Aberdeen via two 28km aqueducts (one laid in 1866 and the other in 1924). The treatment […]

Severn Trent’s Ketford Borehole Pumping Station (BPS) is a critical source which feeds into the Bromsberrow BPS, where the water is blended before being pumped into supply. The pumping station was vulnerable to outage largely due to having a single operational borehole. There were three boreholes at the site (BH1, BH2 and BH3), which historically […]

Langford Water Treatment Works (WTW) is owned and operated by Essex and Suffolk Water (ESW), part of the Northumbrian Water Group (NWG). The treatment works, located near the town of Maldon, treats water abstracted from the nearby River Chelmer and River Blackwater. The river water quality changes greatly with rainfall, at times of excessive turbidity […]

Yorkshire Water’s Langsett Water Treatment Works (WTW) is located 17km north-west of Sheffield in South Yorkshire, on the edge of the Peak District National Park. The WTW treats raw water which is extracted by gravity from two upland impounding reservoirs at Langsett (adjacent to the WTW) and nearby Midhope (approximately 1km south-east of the site). […]

United Utilities’ (UU) vision is to be a leading north west service provider, and one of the best UK water and wastewater companies. It is a challenging vision, but one United Utilities are capable of achieving by focusing on three objectives to deliver the best service to customers, at the lowest sustainable cost and in […]

Murton WTW is fed by six boreholes and supplies up to 350m3/hour of potable water to Berwick-upon-Tweed and surrounding areas, serving over 7,500 properties. The boreholes which feed the Berwick Water Supply Zone can contain turbidity, particularly when flows are high, interrupted or varied. The existing treatment process was unable to remove the turbidity, causing […]

In summer 2019, Northern Ireland Water commenced upgrade works to the water supply on Rathlin Island, Northern Ireland’s only inhabited offshore island. The current public water supply on Rathlin Island is supplied from groundwater. It consists of a pair of closely located boreholes feeding a simple double cartridge type filtration system with sodium hypochlorite dosing […]

Essex and Suffolk Water’s Syleham Water Treatment Works is located in the north-east part of Hartismere in Suffolk. The works supplies water to the north side of Eye and to Fressingfield Water Tower, which in turn supplies approximately 4,000 properties (10,000 customers) throughout a number of villages. It was originally constructed in 1940 and raw […]

Tarbert WTW is located on the edge of Loch Fyne, an inland sea loch, west of the small village of Tarbert in Argyll & Bute. The water treatment works is supplied from the Loch a’ Chaorainn located 5 miles north-west of the treatment works, serving a population of approximately 3,000. To remove the risk of […]

Uig WTW is located on the west coast of Lewis and provides potable water to the community of around 500 residents, with a significant tourist increase in the summer months. The works are gravity-fed by a high-level loch around 2km from the site. Treated water is then pumped from the water treatment works to a […]

Located in South Ayrshire, Scotland, Bradan Water Treatment Works (WTW) has a capacity of 120 Ml/day, with an output of approximately 70 Ml/day. The existing treatment processes comprise aluminium sulphate coagulation, dissolved air flotation, primary filtration, manganese contactors, orthophosphate dosing, lime and disinfection. The works supplies a large area along the west coast of Scotland, […]

The Bray Keleher Water Treatment Works (WTW) abstracts and treats a maximum of 45 Ml/d of water from the River Thames and is located on Monkey Island Lane, Bray which is part way between Windsor and Maidenhead. The works is of strategic importance in maintaining supplies to the western region of South East Water (SEW). […]

Since the beginning of the 20th century, raw water has been conveyed 118km from the Elan Valley in Wales, under gravity by aqueduct, to the water treatment works (WTW) in Birmingham for treatment and supply to the population of the city. The aqueduct has been in continuous service for over 100 years and requires some […]

Bryn Cowlyd Water Treatment Works is located south of the village of Dolgarrog in county of Conwy. The works is gravity fed with raw water from Llyn Cowlyd, 350m above and approximately three miles south west of the works, in the Carneddau mountain range in Snowdonia National Park. The old treatment works was commissioned in […]

In 2016 Yorkshire Water made the strategic decision to remove all chlorine and sulphur dioxide gas from its Water Treatment Works. This formed part of the Yorkshire Water Safety Improvement Plan as the existing toxic gas disinfection systems were becoming non-compliant with Health and Safety regulations and posed a potential significant risk to employees and […]

Located south of the town of Elgin in the north east of Scotland, Scottish Water’s Glenlatterach WTW is situated in the heart of Speyside, home to some of Scotland’s most beautiful scenery as well as roughly half of all of the whisky distilleries operating in Scotland. Raw water is abstracted from the Glenlatterach Reservoir and […]

Guernsey is an island with a population of around 65,000. It has been served by three water treatment works; two (at Longue Hougue and St Saviour) utilising a membrane technology, and the third based on a more traditional rapid gravity filtration (RGF) process. The operation, control and reliability of the Longue Hougue plant had for […]

Loch Ness Regional is a new multi-site £22m water treatment works and infrastructure project for Scottish Water improving the water supply to their customers from the villages of Fort Augustus and Invermoriston, both to the south of Inverness. Located on the banks of Loch Ness, the project’s objective is to improve the treatment of water […]

Lochmaddy is the main town located on North Uist, which is one of the islands forming part of the Western Isles. This project involved the design, installation, construction and commissioning of a new water treatment works (WTW) on a greenfield site beside the existing site. Additionally, some of the works were within South Lewis, Harris […]

The Mythe Water Treatment Works is situated on the east bank of the River Severn, approximately half a mile north of the town of Tewkesbury in Gloucestershire and provides drinking water to population of circa 400,000. Mythe WTW came to national attention in July 2007 when the site was partially inundated with flood water from […]

Otterbourne WSW is a critical site, located between Southampton and Winchester, supplying water to the surrounding area to a total of around 250,000 homes. Otterbourne was originally constructed in 1939, with extensions to the works being constructed in 1949 and 1958. The works treats borehole and river water which supply two independent treatment streams. The […]

One of Affinity Water’s long-standing water treatment works (WTW) is to be upgraded following successful completion of industry leading research and development trials. By utilising a pioneering new technology, Affinity Water will be able to continue to deliver a high quality supply of water for customers and communities whilst continuing to operate a robust treatment […]

Since the beginning of the 20th century, the Elan Valley Aqueduct (EVA) has conveyed raw water 118km from the Elan Valley in Wales under gravity to Frankley Water Treatment Works (WTW) in Birmingham. The treatment works was inaugurated at the same time as the EVA and has treated water, to supply the residents and industries […]

Dalton Piercy Water Treatment Works (WTW) supplies an average demand of 32 Ml/d to ~45,000 properties and significant industrial customers in Hartlepool. The current site process includes UV disinfection, sodium hypochlorite dosing and orthophosphoric acid dosing. This article describes how Anglian Water’s @one Alliance successfully applied product-based delivery principles to the Dalton Piercy Manganese and […]

The water industry is highly-regulated, most particularly to ensure that drinking water is safeguarded and fit for human consumption. The Drinking Water Inspectorate (DWI), formed in 1990, holds responsibility for regulation in England and Wales. The DWI inspects the laboratories where water companies rigorously test their drinking water and ensure that water operations are of […]

Welsh Water’s Glascoed Water Treatment Works (WTW) is situated south of the village of Bodelwyddan in the county of Denbighshire. It was commissioned in 1994, with additions made in 1995 and 2009. The works supplies up to 20 Ml/d to customers along the North Wales coast. The works receives its supply of raw water from […]

Yorkshire Water’s Irton Water Treatment Works (WTW) is located 5.5km southwest of Scarborough in North Yorkshire. The WTW abstracts water from an aquifer via numerous boreholes and supplies two local service reservoirs; Springhill and Low Mount, which feed Scarborough and the surrounding area. Demand profiles are seasonably variable. The site has an abstraction licence for […]

The Lochaline Water Quality Upgrade Project required the design and delivery of a whole new water treatment works at Lochaline in the remote Morven Peninsula. A modern and compact membrane based treatment technology was selected which would support a rapid and efficient delivery strategy. The key to the delivery strategy was an on off-site modular […]

Between 2007 and 2014 two of Northumbrian Water’s (NWG) water supply zones, served by Whittle Dene WTW and Warkworth WTW, both in Northumberland, consistently received the highest number of water quality contacts for discoloured water. In previous AMP periods, NWG undertook a programme of strategic mains cleaning and unidirectional flushing to improve customer acceptability performance. […]

Melbourne WTW is the second largest clean water treatment works in Severn Trent Water (STW) and serves large population centres in south Derbyshire and Leicestershire with capability to supply up to a maximum of 250Ml/d. The dissolved air flotation (DAF) process removes suspended solids and other contaminants via the use of air bubble flotation. The […]

Melbourne Water Treatment Works (WTW) is situated in the eastern region of Severn Trent Water Ltd. It is the primary feed to 750,000 customers in the Leicestershire area. The original works was constructed in the 1960s and this was totally rebuilt in the 1990s and is capable of supplying up to 220MLD. In early 2016, […]

Located near Okehampton, Northcombe WTW supplies a large region of North Devon including Barnstaple, Bideford and South Molton. The works supplies over 88,000 customers, with around half of these relying on Northcombe as their sole supply of water. As standards for water quality change, South West water (SWW) has been issued a notice by the […]

Ogston Water Treatment Works (WTW) is located at Stretton, Higham in Derbyshire and it provides treated water to Higham, Ambergate and Whiteborough Reservoirs. The maximum works output is 76 mega litres per day (MLD) with an output for the New works DAF (dissolved air flotation) plant of 50 MLD. As part of the AMP6 coagulation […]

Yorkshire Water Services (YWS) committed to the Drinking Water Inspectorate’s (DWI) compliance date of 31 December 2017 for beneficial completion of a new clarification process at Rivelin WTW. The £25m scheme required the design and construction of a large 82.5MLD buried treatment plant (80m long, 40m wide and 14m high) on the border of the […]

Sheeplands WTW is a groundwater treatment plant supplying an average of 12Ml/d to the Bowsey Hill Service Reservoir and local district zones. The site comprises of three boreholes, a ‘blending’ raw water supply main received from Harpsden WTW, a nitrate removal plant, GAC vessels, sodium hypochlorite storage and dosing, sodium bisulphite storage and dosing, single […]

Tynywaun Water Treatment Works forms part of the South East Wales Conjunctive Use System (SEWCUS) chain of water treatment works that supply the central South Wales valleys and cities of Newport and Cardiff. This SEWCUS system does not, however, provide full conjunctive use to the Tynywaun distribution area, having very limited connectivity. The works has […]

Originally built in 1965, Uttlesford Bridge Pumping Station near Saffron Walden consisted of two boreholes, a contact tank, booster pump suction tank and treatment by marginal chlorination. The licence at Uttlesford Bridge is a combined group licence with Springwell Farm of 13.64MLD. There are times during peak demand that up to 5MLD compensation flow is […]

Whittle Dene Water Treatment Works is Northumbrian Water’s fourth largest treatment works with a deployable output of 118Ml/d, supplying 228,000 properties. Located in Northumberland, 13 miles west of Newcastle, it is a strategically important works to Newcastle, Gateshead, North Tyneside, South Northumberland and Tyne Valley regions. Raw water at the site comes from adjacent reservoirs […]

Affinity Water’s largest water treatment works (WTW) is being upgraded as part of their AMP6 business plan to ensure they continue to provide a robust treatment solution for the removal of pesticides from water abstracted from the River Thames. The scope of the works is to increase the granular activated carbon empty bed contact time […]

Frankley Water treatment Works (WTW) provides a potable water supply to the metropolitan area of Birmingham, and has done so for over a century. Currently it treats water that is conveyed by gravity from the Elan Valley in Powys, Wales. Severn Trent Water is in the process of upgrading Frankley WTW to accommodate a new […]

Portsmouth Water’s Farlington WTW dates back to 1909 and provides potable water to more than 280,000 people and many businesses in the Portsmouth and Havant area. Farlington’s supply is derived from the springs, which are believed to be the largest spring source in Europe. In April 2015 Portsmouth Water issued a tender based on an […]

Heigham Water Treatment Works (WTW) is the main supply of water to Norwich and supplies an average of 42Ml/d of water sourced from the River Wensum at several locations. Potable water is pumped into the Norwich Public Water Supply Zone feeding a multitude of storage reservoirs, booster pumps and properties. The main raw water abstraction […]

Hoplands Farm WTW is a South East Water treatment plant serving the local towns of Herne Bay and Canterbury. Raw water is pumped via submersible borehole pumps from two chalk boreholes located within the works. The total flow from these boreholes is a maximum of 79 l/s. The raw flows are super-chlorinated and then passed […]

Northumbrian Water’s Horsley WTW serves around 800,000 people in the Newcastle and Tyneside area. The original works was constructed in 1977 and last extended in 2003. It draws its supply from the nearby River Tyne at Ovingham and the Whittle Dene complex of reservoirs fed from Kielder Water. The existing works has a capacity of […]

Kingston Water Treatment Works (WTW) is located within a 10 minute drive from Canterbury town centre and the train station. The treatment works is located within the Kent Downs Area of Outstanding Natural Beauty (AONB) and is surrounded on three sides by a mature wooded area and on one side by two residential properties. Raw […]

Papplewick Borehole Pumping Station (BPS) is located near to Papplewick Village in Nottinghamshire. The site is located within the boundaries of the original and now historic and English Heritage protected site. The scheme replaced the existing outdated and none regulative equipment with a new ultra violet disinfection plant. The team fulfilled their obligations ensuring water […]

The £2.25m Poolend and Highate pH Correction and Plumbosolvency Scheme required the design and construction of a 20Ml/d treatment plant. Poolend BPS is located near Leek in Staffordshire. Water from Poolend and Highgate is blended with water from other sources and supplies thousands of properties across Staffordshire. The successful completion of the scheme by design […]

Tamar WTW was constructed in the mid 1970s and is located on the Cornwall/Devon border near Bude/Kilkhampton. Raw water is transferred to site by gravity pipework from Upper Tamer Lakes Reservoir. The works has a maximum output of 9.0 Ml/d and treated water is pumped by 2 (No.) sets of on-site high lift pumps to […]

Tynywaun WTW is located at the north end of the Rhondda Fawr Valley, at the base of the Rhigos Mountain, in the village of Tynewydd at an elevation of 1,000 feet. Water treatment works have operated at the Tynywaun site since 1906 and the existing works was last refurbished during the 1990s, with new filters […]

The £3.3m Wallgrange Solvents and pH Improvements Scheme required the replacement of two existing borehole pumps and the design and construction of a water treatment works sized to treat 20ML/day. The installation of this treatment works has directly addressed a number of water quality issues and has delivered a more resilient supply to thousands of […]

Frankley WTW is located to the south west of Birmingham city centre. It is the primary water treatment works supplying potable water to the city of Birmingham. The Elan Valley Aqueduct (EVA) is a 118km gravity aqueduct that conveys raw water from the Elan Reservoirs in mid Wales to Frankley WTW. The Elan Reservoirs are […]

As part of the Birmingham Resilience Project, Severn Trent Water has been investigating process solutions to treat the River Severn water at the existing Frankley WTW. The current dissolved air flotation (DAF) and rapid gravity filter (RGF) plant was designed to treat the Elan Valley Aqueduct water (EVA), a relatively clean soft upland reservoir source. […]

The construction, in the late 19th century, of the Elan Valley reservoir complex and aqueduct was one of the greatest engineering feats of its age. It was a visionary project which saw civic authorities in Birmingham identify and respond to need, ahead of their rivals, using cutting-edge techniques to transform lives in the West Midlands […]

Welsh Water’s Bryn Cowlyd Water Treatment Works (WTW) is located near Dolgarrog village in the Conwy Valley. The site sits on the eastern side of the Carneddau mountain range on the outskirts of Snowdonia National Park. The existing works on the site was commissioned in 1998 and can deliver up to 46Ml/d of clean water […]

Portsmouth Water’s Farlington WTW dates back to 1909 and provides potable water to more than 280,000 people and many businesses in the Portsmouth and Havant area. Farlington’s supply is derived from the springs, which are believed to be the largest spring source in Europe. Raw water is chlorinated at the spring source pumping stations. At […]

Little Eaton Water Treatment Works is located approximately 4 miles north of Derby just off the A38. The works supplies safe, clean drinking water to the growing community of north-west Derby and was originally designed for a maximum water output of 85MLD. The operational efficiency had been severely compromised due to a number of factors […]

The £2.9m Llandinam Resilience Scheme required the design and construction of a 20,000m3/day treatment plant which can be brought online reliably within 6 hours of detecting a significant failure of the existing treatment stream. The successful completion of the scheme by design and build contractor Mott MacDonald Bentley (MMB) on behalf of Severn Trent Water, […]

South West Water (SWW) has started construction on a new £60m state-of-the-art water treatment works in Devon, the company’s flagship project in its 2015-2020 business plan. Mayflower WTW will use cutting-edge treatment processes, designed and developed by leading Dutch water technology company PWN Technologies and will serve around 250,000 customers in Plymouth and the surrounding […]

United Utilities’ Oswestry WTW is located near to the market town of Oswestry, Shropshire on the England/Wales border. The original works became operational in 1892, near the end of the Victorian era, in response to the growing need for wholesome clean drinking water to Liverpool. It is a large works which treats raw water from […]

Rivelin WTW provides drinking water for a population of approximately 200,000 in Sheffield. The raw water feeding the works is a blend of water from the Derwent Valley via Ladybower Reservoir and the local catchment via Rivelin Reservoir. The quality of the raw water has deteriorated in the period since the current plant was built […]

Southport is a large seaside town that lies on the Irish Sea coast approximately 20 miles north of Liverpool. With a population over 100,000 Southport is the eleventh most populated settlement in the north-west of England. At the turn of the 19th century the area became popular with tourists due to the easy access from […]

Waterworks Road WTW is located within a 10 minute walk from Eastbourne town centre and the terminal train station. The water treatment works is located in an urban area, surrounded by a mixture of residential and light commercial properties. Raw water is abstracted from a single off site borehole which itself is fed by a […]

Woodmansterne WTW is being upgraded as part of Sutton and East Surrey Water’s (now SES Water) AMP6 investment to secure water supplies for existing and future customers throughout its supply area. The scope of works is to increase the treatment capacity to a maximum raw water flow of 50Mld. Doosan Enpure has been appointed as […]

Safeguarding the water supplies to the UK’s second city

2 ML/d Actiflo® high rate sand ballasted clarification pilot plant part to validate a full scale plant designed to clarify the River Severn and the Elan Valley water

A vital new source of water to meet peak period demands in Lisburn and Belfast and help the existing network cope with any future emergency situations

Tackling a nitrate problem using existing assets whilst maintaining operation of a town’s WTW

Off site MEICA Construction

An innovative solution for pH correction to maintain water quality for the City of Birmingham

UV cryptosporidium inactivation project – the last of the ten AMP5 DWI regulatory outputs successfully achieved by South East Water

Testing of the Lower Greensand aquifer required constructing a 250m deep production borehole, monitoring boreholes and associated infrastructure

Providing a water treatment plant at Redhill Reservoir in Telford

New treatment works in the Go to Green programme using a single filtration stage with sand and Polarite media to reduce manganese levels

A low cost solution to trihalomethanes (THMs) in drinking water

Design and installation of a new chlorination system to prevent the invasion of extended colonies of zebra mussels

GAC pesticide control and capital maintenance project

Nitrate reduction on one of Yorkshire Water’s key strategic water treatment works

Wessex Water are providing additional security of supply and additional strategic storage within the water distribution network in West Dorset

Ensuring the safety of toxic gas assets across Yorkshire

Upgrading the existing primary filtration stage by replacing it with a membrane filtration

Refurbishment of a 1960s WTW has provided South East Water with an advanced, fully automated facility

£15.6m programme to install ultra-violet treatment plants at a number of strategic WTW sites

Standardised modular approach to UV disinfection

Washwater treatment and sludge processing system improvements

£35m upgrade to reduce risk arising from the bulk storage of liquid chlorine, liquid sulphur dioxide and fuel oil

The Isle of Man is a self governing Crown Dependency which, through its ancient parliament Tynwald, enjoys a high degree of domestic legislative and political autonomy. Manx Utilities is a statutory board, charged with ensuring the economic, efficient and effective provision of the services and infrastructure necessary to meet the Island’s needs in terms of […]

The construction of a new water treatment works to serve the town of Southport and surrounding areas

Standardised modular approach to UV disinfection

A sustainable scheme to turn a liability into an asset suitable for redevelopment

Ensuring Birmingham’s water supply is always on and good to drink

Upgrade to increase output and improve performance of non-potable WTW

Nitrates blending scheme to ensure Eyton boreholes remain a key part of the supply network

Ultra-filtration technology for the treatment of variable surface water quality

Sludge Treatment Reed Beds – Breaking new ground, a world first for a water treatment works

The original Llwyn Onn WTW was constructed during World War II, to supply water for a munitions factory in Wrexham. Water is abstracted from the Dee and pumped to the Marchwiel Reservoir before treatment at Llwyn Onn. Raw water quality is reliable, but the upland sources in particular result in high levels of manganese. Although […]

Process optimisation by the addition of prefabricated stainless steel rapid gravity filters

Integration of ion exchange technology to counteract increasing nitrate concentration in source aquifer

Award winning project driven by BIM and innovation to deliver collaborative design and construction efficiencies

Improvement scheme involving the upgrade of existing facilities to incorporate a new nitrate removal facility

Rebuilding York’s water treatment works

£14m investment to improve disinfection processes and aluminium removal performance

An innovative and considerate treatment enhancements project to maintain water quality

A challenging project to expand capacity at Sutton & East Surrey Water’s water storage & treatment asset

The first of 4 ultraviolet light installations for the treatment of Cryptosporidium

Treatment works extension and existing works improvements

Climate change points to high turbidity, organic carbon levels and algal loads

The application of UV/peroxide advanced oxidation in combination with granular activated carbon

Edinburgh’s new £130m WTW is a feat of modern construction methods and sustainable engineering

Sludge treatment reed beds – a world first for a water treatment works

Cambridge Water Company (CWC) delivers potable water to approximately 300,000 customers spread over an area of 453 square miles in and around Cambridge. The water sources, with a maximum daily license output of 130Mld, are exclusively boreholes drawing water from a predominantly chalk aquifer where nitrate levels have been steadily rising over the past 30 […]

Fyne process removes colour and impurities from raw surface water with no environmental impact

Process upgrades to resolve manganese problems

Works upgrade and cryptosporidium UV treatment

A complete redesign and rebuild in the confines of surrounding woodlands and narrow access roads

New 35Ml/d DAF plant for the City of York

The use of ultraviolet light for the treatment of Cryptosporidium

Collaboration with Severn Trent Water and the supply chain ensured success at Church Wilne

Upgrade with CoCoDAFF® and existing works refurbishment

Integration of a new counter current dissolved floatation and filtration (CoCoDaff) process into an existing works

Improvements to provide availability throughout the year

A £1.4m cryptosporidium treatment scheme to safeguard drinking water quality

New water treatment works for the Inverness region

Alternative to secondary treatment plant saves millions

Upgrade to the main source of potable water for Plymouth

Enhancement with DAF, RGF and Ultraviolet Disinfection

£125m investment to improve water supply to Scotland’s capital

Advanced WTW – three steps to ensure resilience

A £10m integrated solution to improve drinking water quality in the Scottish Borders

Nitrates removal scheme to meet regulatory compliance

Additional treatment capacity and process improvements

A 150,000 m3/day Reverse Osmosis Desalination Plant

Protecting unique habitat key focus for island project team

£7 million upgrade to improve quality and meet increased demand

£24m upgrade & refurbishment project

For growth in South and East Midlands

Improved water treatment in the Elgin and east coastal area

Capital investment programme to upgrade existing water treatment works

£5.1m scheme to secure and improve water treatment for Dundee area

Quality and base amalgamation

Ozone system upgrade

Raw water colour reduction schemes

Combined upgrades to meet SOSI compliance

Quality water for Birmingham delivered through teamwork

Nitrate reduction project

Pipe production facility bringing major benefits to Edinburgh scheme

£4.3m upgrade scheme to improve water treatment in Fife

New River bromate removal scheme

£41m scheme to improve water treatment for Aberdeen

Innovative ACWA NITREATTM plant future proofs WTWs against anticipated increase in nitrate levels

Directive to reduce the concentration of iron and manganese

WTW upgrade with steel tank dissolved air flotation and rapid gravity filtration

Reducing the risk of cryptosporidium outbreaks at two WTWs

UK’s first ever PPP for the bulk supply of potable water serving almost 50% of Northern Ireland’s population

New plant constructed within existing slow sand filter

A £2.2M Sludge Treatment System Upgrade

Innovative solutions with a joint delivery team environment

Water quality improvements scheme for United Utilities

Removing nutrients from river water for reservoir recharge

Combined quality and capital maintenance project

Installation of new water process plant and extensive main laying

£7.5m project to upgrade water quality in Ayrshire

Improving water quality for the population of the Isle of Man

DAF upgrade

Process upgrade to increase output

Improved water treatment in the West Highlands

Pesticide removal by adsorption onto granular activated carbon

700,000 residents of Greater Glasgow delighted with new works

£2.2m project improves Highlands water quality

Treatment works upgrade project for Essex & Suffolk Water

£7.6m project to bring water quality improvements to Fife

Challenges for 15 Ml/d plant on Guernsey

Maximum output needed increase from 13Ml/d to 16 Ml/d

Increased capacity and process stability

£5.2m scheme brings improved treatment in Scottish Highlands

Granular activated carbon adsorbers – pesticide removal scheme

Turbidity removal scheme

Installation of new nitrate treatment plant

30Ml/d works using submerged membranes & UV disinfection

Refurbishment for Dee Valley Water

Yorkshire Water’s £70m capital investment

Trihalomethane reduction scheme

£38m scheme to improve water supplies in Aberdeen

£6.4m upgrade for waterworks serving 200,000 population

£8.4 investment improves quality

£25m works rebuild by Wessex Water

Nutwell WTW and Doncaster area strategy

Northern Ireland upgrades 50% of water treatment capacity

Upland sources to be fully utilised if demands during a drought were to be met

Increasing overall capacity of works and improving process

Installation of new nitrate treatment plant

Groundwater sources in Area of Natural Beauty

Rectifying low-level bacterial failures

Yorkshire Water invest £14 million to achieve compliance & security of Bridlington supply

A case of ‘environmental Sudoku’

New £10m WTW for Crossmaglen & district

Record race against time to secure London’s water supply

First new surface water treatment works in London for 13 years

High tech in the countryside

One of the most unique water treatment works ever built

£8.6m WTP adding treatment line to meet environmental challenges

Trihalomethane Compliance

£3.8m primary filter conversion for Essex & Suffolk Water

Replacement disinfection scheme

Pesticide & trihalomethane reduction scheme

A £1.8m quality compliance project

Iron and manganese removal scheme

Safeguarding city of Bath water supply during future droughts

Nitrate removal plants being installed at six Anglian WTWs

“Plumbo” scheme – excellent example of successful alliancing

£8.6m budgeted project at critical works

Major investment improves IOM water treatment infrastructure

Includes development of three new on-site boreholes

First submerged membrane plant for Three Valleys Water

6.6Ml/d WTP can be deployed in four shipping containers

Adding a third clarifier stream & 10Ml/d reservoir

Engineering award claim for upgrade in tranquil beauty spot

Darent Alf, restoring flows in the River Darent

Hydro power station at works inlet offsets 30% energy needs

Wessex Water Services AMP 4 programme

Removal of cryptosporidium risk

£9.1m scheme for increased output & reduced compliance risk

Intensified DAF process helps increase capacity

Curing shortfall now & catering for predicted 25 years growth

Setting ‘new standards’ for water distribution

Water quality improvements, Ellesmere Port, Cheshire

£1.8 million reservoir to safeguard supply

Innovative design to meet project requirements

Utilising DAF Rapide technology

Upgrading of treatment works serving Carlisle area

New micro-filtration membrane system & plant upgrade

Providing 22.5 million litres of water a day to meet demand

Alliance ‘design teamworking’ leads way to major savings

Sympathetic design and construction in sensitive environment

Efficient water production for the 21st Century

New plant will benefit island’s aquatic environment

£10.5m membrane plant improves Aberdeen water quality

£7.4m Trihalomethane project for Essex & Suffolk Water

Rising mains renewal after several bursts

Upgrading plant to meet new compliance values

Tough challenge on remote Scottish Island

New treatment works to improve water supply

£12m new WTW takes IOM water supply into 21st Century

New GAC plant, RGF refurbishment & upgraded protection

Significant archaeological finds at two major projects

Major asset renewal & quality improvements at key WTW

High recovery ion exchange process for nitrate removal

£22m upgrade, including GAC process stage on live plant

Two water sources brought together for final treatment

Water quality improvements at major works

Cryptosporidium removal plant for borehole water

Framework alliance provides value engineering solutions

Cryptosporidium protection for strategic water supply

Conventional & biological treatment working together

Ultrafiltration & reverse osmosis improves water resources

Investigating feasibility of blending waters of two lochs

State-of-the art automation for new NI WTW

Using membranes as a cryptosporidium barrier

£5.7m nitrate reduction plant for two critical supply sources

£20m 3rd phase of major Northern Ireland project

£28.5 regional scheme improves water quality in NE corner of UK

Solving concrete corrosion problem at DAF plant

Recovery of filter backwash water using novel UF technology

Safe, high quality drinking water for 483,900 customers

£5.8 million upgrade improves efficiency, safety, water quality

Engineering excellence in ‘area of outstanding natural beauty’

Auchneel WTW is situated just to the north west of Stranraer and treats soft upland waters from three reservoirs, Upper and Lower Dindinnie and Knockquhassan Reservoirs

Membrane filtration cryptosporidium barrier

Extensive upgrade provides essentially new asset

Modifications for THM removal

Cryptosporidium protection scheme

Improving water quality at groundwater sources

Extensive improvements including two-stage ozonation

Forward flow to waste & filter refurbishment

Severn Trent develop arsenic removal technology for boreholes

Remote rural WTWs using membrane plants

New ultra filtration process provides cryptosporidium barrier

£100m ‘flagship’project to upgrade water supply for 700,000

New works recycles wastewater to augment river water

Membrane filtration system for borehole sites

Pathogen protection using ultrafiltration at rural ground water supply

Thames Water install plant to meet new regulations

Uprating north Oxfordshire plant to meet demand

World’s first large scale MIEX® water treatment plant

Cryptosporidium protection scheme

Water quality improvements