Nominate/Submit Case Studies

Become a Featured Company

Stantec UK

The Stantec community unites more than 31,000 employees working in over 450 locations across 6 continents. Stantec empowers clients, people, and communities to rise to the world’s greatest challenges at a time when the world faces more unprecedented concerns than ever before.

We are a global leader in sustainable engineering, architecture, and environmental consulting. Our professionals deliver the expertise, technology, and innovation communities need to manage aging infrastructure, demographic and population changes, the energy transition, and more.

Today’s communities transcend geographic borders. At Stantec, community means everyone with an interest in the work that we do – from our project teams and industry colleagues to our clients and the people our work impacts. The diverse perspectives of our partners and interested parties drive us to think beyond what’s previously been done on critical issues like climate change, digital transformation, and future-proofing our cities and infrastructure.

We are designers, engineers, scientists, project managers, and strategic advisors. We innovate at the intersection of community, creativity, and client relationships to advance communities everywhere, so that together we can redefine what’s possible.

Stantec trades on the TSX and the NYSE under the symbol STN. Visit us at Stantec.com or find us on social media.

Kerse Treated Water Storage Tank (2024)

New £6.5m water storage tank completed on schedule replacing 90 year-old asset

Project Pipeline - County Durham & Tees Valley (2024)

Update on construction of a large diameter strategic water main including a challenging crossing of the River Tees

Red Doles CSO (2024)

The Red Doles Combined Sewer Overflow (CSO) neighbours the Huddersfield Broad Canal and a Network Rail bridge. The CSO serves a catchment covering approximately 3.8km2, predominantly consisting of residential properties and accommodating around 8512 people. The majority of the Fartown area of Huddersfield drainage operates as a combined system, with Red Doles receiving flows from […]

Southampton Shellfish Scheme (2024)

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

West Hallington Reservoir (2024)

West Hallington Reservoir is a Northumbrian Water Group (NWG) asset situated 1km to the northeast of the village of Colwell in the Tynedale district of Northumberland. The reservoir was constructed between 1884 and 1890 for Newcastle & Gateshead Water Company for the purpose of municipal water supply. The reservoir was built adjacent to the earlier […]

Witches Oak WTW: Green Recovery - Decarbonising Water Resources (2024)

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

Yorkshire Water P Schemes Portfolio (2024)

Batched P removal portfolio to help achieve WINEP compliance

Brook Street (Dawlish) CSO (2023)

Dawlish is a traditional seaside town on the south coast of Devon, approximately 12 miles south of Exeter and is a popular holiday and day trip destination. South West Water (SWW) and Galliford Try’s objective was to ensure that the bathing water quality did not deteriorate within the next 20 years by ensuring that there […]

Burnley WwTW Catchment Strategy (2023)

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 […]

Durleigh WTC (2023)

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 […]

Faringdon to Blunsdon Trunk Main Phase 2 (2023)

The water network in the western end of the Thames Valley Supply Area is dominated by local borehole water sources. Over time, population growth coupled with general environmental drivers to reduce reliance on groundwater sources in sensitive chalk stream areas, Thames Water has sought to improve supply resilience and deployable output by linking local sources […]

Goddards Green WwTW (2023)

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 […]

Hanningfield WTW - Washwater System (2023)

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 […]

Knostrop STW (2023)

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. […]

Layer to Langford Pipeline (2023)

Essex and Suffolk Water, part of Northumbrian Water Ltd, supplies drinking water to 794,000 properties. Maintaining a supply to those customers requires the distribution of up to 670 Ml/d of high-quality drinking water. In Essex, the two primary treatment works are Hanningfield WTW, a physio-chemical works near Chelmsford and Layer WTW, a biological works, near […]

Lower Barden Reservoir (2023)

Lower Barden Reservoir is the lower of two reservoirs located near Bolton Abbey within the Yorkshire Dales National Park. The reservoir is an impounding reservoir with a crest length of approximately 640m and a maximum height of 28m with a capacity of 2.23 Mm3. The overflow is located on the right-hand side of the embankment […]

Tees & Central Strategic Pipeline: Phases 1 & 2 (2023)

With approximately 60km of new 800/900mm pipeline required to replace the existing potable water mains, some of which are over 150 years old, the Tees and Central Strategic Pipeline will directly improve water quality, network resilience and operability within the Tees Network. The pipeline will serve approximately 50,000 properties and link a number of strategic […]

Witches Oak WTW: Green Recovery - Decarbonising Water Resources (2023)

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 […]

Alston Spade Mill Pipeline (2022)

The Alston Spade Mill Pipeline project forms a key part of the United Utilities AMP7 programme and will ensure that the currently untapped resource at four local reservoirs in Lancashire is utilised and will boost the available water in the network without having an additional impact on the environment. Currently the four reservoirs have been […]

Burnley WwTW Catchment Strategy (2022)

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 […]

Carlisle WwTW (2022)

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 Integrated Constructed Wetland (2022)

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 […]

Enhanced Biological Phosphorus Removal Programe (2022)

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 […]

Fontburn WTW (2022)

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 […]

Hailsham South WwTW (2022)

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 […]

Hanningfield WTW - Washwater System (2022)

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, […]

Horwich WwTW (2022)

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. […]

Johnson Street Storm Overflow Screening Project (2022)

The Johnson Street Storm Overflow (SO) Screening Project in Gateshead was designed to protect the River Tyne from aesthetic pollution improving river quality for the benefit of customers, wildlife and the environment. The SO at Johnson Street was previously a significant unscreened discharge to the River Tyne. The project scope was to screen all spill […]

Layer WTW (2022)

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. […]

Roundhay Park Lane CSO (2022)

The project is located within the residential area of Roundhay in north Leeds, less than 500m from the city’s largest park. The immediate area’s combined system serves in excess of 1900 residential properties and ultimately feeds into the wider Leeds city combined system via Roundhay Park Lane Combined Sewer Overflow (CSO). Hydraulic and water quality […]

Southwaite WwTW (2022)

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 […]

Swinsty Impounding Reservoir (2022)

Swinsty Reservoir is the third in a cascade of four impounding reservoirs in the Washburn Valley, North Yorkshire. The reservoir is impounded by a 490m long, 24m high earth-fill embankment dam with a central puddle clay core, storing 3.94 million cubic metres at top water level. The overflow is located on the right-hand side (RHS) […]

Burnley WwTW Catchment Strategy (2021)

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 (2021)

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 […]

Durleigh WTC (2021)

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 […]

High Frequency Risk Reduction: Garstang Road (2021)

In the PR19 agreement, water companies were encouraged to provide resolution to long-standing flooding problems being experienced by customers – but allowed a less prescriptive approach on the actual projects defined in the Water Company’s (WCo’s) Price Review submission. This new process allowed WCo’s a degree of discretion on the number and frequency of flooding […]

Hollym, Myers Lane, WwTW (2021)

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, […]

Ledbury & Brockhampton STWs (2021)

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 […]

Phosphorus Removal Enhancement Programme (2021)

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 […]

Telscombe Lower Portobello PS & Screening Works (2021)

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 […]

Battersea Shaft Pumping Station (2020)

The Thames Water Ring Main (formerly the London Water Ring Main) is a major part of London’s potable water supply infrastructure. Originally constructed between 1988 and 1993, it forms a 50-mile ring of mostly 2.54 m (100”) diameter concrete pipeline to transfer potable water from water treatment works in the River Thames and Lea catchments […]

Blackburn and Darwen WwTWs (2020)

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, […]

Brentwood STW (2020)

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 […]

Childrey Warren WTW Abstraction Closure (2020)

During AMP4, Thames Water Utilities Ltd (TWUL) undertook low flow investigations for the Letcombe Brook, in the Wantage area of Oxfordshire. It was determined that the abstraction at Childrey Warren Water Treatment Works (WTW) was having an adverse impact on the river flows and the local environment. A subsequent review of options which included augmentation, […]

Durleigh WTC (2020)

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 […]

HS2 Impact Assessment (2020)

High Speed 2 (HS2) will be the UK’s new £56 billion high speed railway linking London to the Midlands and north of England with some sections of the route already under construction. The new high-speed railway line in Yorkshire will run from Chesterfield to Leeds. Yorkshire Water are the water and wastewater authority in this […]

Phillipson Street CSO Scheme (2020)

The Phillipson Street CSO Scheme is located in Wallsend, a suburban area to the east of Newcastle city centre with an industrial past. In the catchment upstream of the existing CSO, a total of 3,869 people are served by a fully combined sewer network. The existing CSO has undergone several upgrades over at least the […]

Rugby STW - BioMag Plant (2020)

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. […]

Woolston WwT Scheme - Part 5 (2020)

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 […]

Alum Waters Sewer Flooding Alleviation Scheme (2019)

As part of the AMP6 Capital Programme, Northumbrian Water Group (NWG) are investing over £1bn in water and wastewater services to provide unrivalled customer service. As part of this programme. Esh-Stantec, a joint venture between Esh Construction and Stantec UK, was commissioned by NWG to investigate the sewer network and to develop a notional solution […]

Barston STW (2019)

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. […]

BRP - Treated Water Project - Birmingham Resilience Project (2019)

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 […]

Childrey Warren WTW Abstraction Closure (2019)

During AMP4, Thames Water Utilities Ltd (TWUL) undertook low flow investigations for the Letcombe Brook, in the Wantage area (Oxfordshire). It was determined that the abstraction at Childrey Warren Water Treatment Works (WTW) was having an adverse impact on the river flows and the local environment. A subsequent review of options which included augmentation, works […]

Finham STW Activated Sludge Plant (2019)

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 […]

Killingworth & Longbenton Water Management Ph 3 (2019)

Since 2010 the Risk Management Authorities (RMAs) for the Tyneside Drainage Catchment have developed and implemented an area-based prioritisation process to identify and investigate those drainage areas at greatest risk of performance failure. The Killingworth, Longbenton and Forest Hall area was one of those areas identified, something supported by the published 2010 Strategic Flood Risk […]

Knostrop Sludge Treatment Facility (2019)

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, […]

Minworth STW - Curdworth Sludge Lagoons (2019)

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 […]

Mythe WTW (2019)

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 […]

River Yare Pipeline Crossing & Tunnel Decommissioning (2019)

As part of a continued effort to improve service to customers and ensure resilience and security of supply, the team at Northumbrian Water Limited together with Stantec UK carried out an investigative study of the issues related to the River Yare Strategic Crossing and identified a cost effective solution that achieved these objectives. The Great […]

Scaynes Hill WwTW (2019)

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 […]

Thames Water AMP6 Pressure Management Programme (2019)

Thames Water’s water distribution network totals some 31,000km of mains that provides about 2.6 billion litres of water every day. This network has been built up over many years and includes pipes that were laid during the Victorian age. Pressure management is an established way of leakage reduction and network protection, ensuring that customers receive […]

Waterworks Bridge Reconstruction (2019)

Waterworks Bridge is an oblique three-span structure of approximately 30m length crossing the Waterworks River in Stratford, East London and forms a key part of the Greenway footpath and cycleway providing access to/from the Queen Elizabeth Olympic Park from the south-east. Most significantly, Waterworks Bride houses a section of the Northern Outfall Sewer (NOS). Built […]

Woolston WwT Scheme - Part 4 (2019)

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. […]

BRP - Treated Water Project - Birmingham Resilience Project (2018)

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 […]

Countess Wear Stormwater UV Irradiation Plant (2018)

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 […]

Euston 42” Trunk Main Diversion (Phase 1) (2018)

High Speed 2 (HS2) Phase 1 will intersect a large number of critical third-party assets along its 190km route, with a significant impact on several of the UK’s water and wastewater companies. In London, approximately 50kms of Thames Water’s buried assets are affected by construction of the new railway, including a number of highly strategic […]

Killingworth & Longbenton Water Management (2018)

Since 2010, the Risk Management Authorities (RMAs) for the Tyneside drainage catchment have developed and implemented an area-based prioritisation process to identify and investigate those drainage areas at greatest risk of performance failure. The Killingworth, Longbenton and Forest Hall area was one of those areas identified, something supported by the published 2010 Strategic Flood Risk […]

King’s Scholars’ Pond Sewer (2018)

There was evidence of significant internal degradation and deterioration of the King’s Scholars’ Pond Sewer in the vicinity of the Baker Street tube station London Underground tunnel. Degradation included significant cracking of the sewer brickwork as a consequence of considerable settlement of the LUL railway tunnel beneath. The sewer is situated beneath a key artery […]

Knostrop Sludge Treatment Facility (2018)

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 […]

Lockwood Reservoir (2018)

Lockwood Reservoir is one of ten Walthamstow reservoirs in north London and makes up part of Walthamstow Wetlands; Europe’s largest urban wetland nature reserve. It is also a Site of Special Scientific Interest (SSSI) and a Special Protected Area (SPA). The Wetlands attract 250,000 visitors a year and is a key site in London for […]

New Malden Trunk Mains (2018)

New Malden pipe-track contains 3 (No.) 30” and 1 (No.) 48” trunk mains, with the oldest main being nearly 170 years old. The mains feed the Surbiton supply zone and serve as bulk transfer mains to supply south-west London. Kingston Council is going to build a new cycleway over the track; however, these mains are […]

Nine Elms, Battersea Growth & SuDS (2018)

The Nine Elms redevelopment area within Battersea includes 21,000 new dwellings, office, leisure and retail space creating 8000 new jobs including the new US Embassy, a relocated New Covent Garden Market site and the Northern Line extension. An integrated water management study completed by Thames Water (TW) in partnership with the Greater London Authority, ARUP […]

Plymouth Central STW Stormwater UV Irradiation (2018)

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 […]

Thames Water UPM Scoping Studies (2018)

The Environment Agency (EA) identified a number of waterbodies which were deemed to be at risk of deterioration or failure to achieve the Water Framework Directive (WFD) ‘good’ status due to the impacts from wet weather discharges from the urban wastewater network. Seventeen of these waterbodies were within the Thames Water region and the risk […]

Trinity Broads Mud Pumping Project (2018)

The Norfolk Broads is a low-lying landscape of interconnected lakes (broads) and streams and large parts are also Sites of Special Scientific Interest (SSSIs) and contain a number of protected species of flora and fauna. One area of the Norfolk Broads; the Trinity Broads, provides raw water to Ormesby Water Treatment Works (WTW) operated by […]

Woolston WwT Scheme - Part 3 (2018)

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 […]

Basingstoke Sludge Treatment Centre (2017)

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 […]

Beckton to Riverside Sludge Mains Refurbishment (2017)

Thames Water Utilities Limited (TWUL) currently transfer a proportion of the wastewater sludge generated by Beckton Sewage Treatment Works (STW) in East London to Riverside STW using 2 (No.) 8km buried pipelines. These twin pipelines were originally installed in the late 1960s to pump sludge in the opposite direction from Riverside to Beckton where it […]

BRP - PAC Dosing System - Birmingham Resilience Project (2017)

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 […]

Cowley Trunk Main Project (2017)

Following a burst on the existing 24” trunk main running along the Oxford Eastern Bypass in September 2014 causing severe flooding, Thames Water made the decision to replace the high risk section of the main to prevent future pipe failures. The Optimise Joint Venture delivered the £6m project, installing 2km of replacement trunk main along […]

Heybridge Sea Gate & Lock Gate Replacement (2017)

At the start of construction for the Hanningfield Raw Water Reservoir, an Act of Parliament The Hanningfield Water Order 1950 was passed with agreements put in place for the maintenance of the lock between the navigation company (Essex Waterways) and Northumbrian Water Group (NWG), parent company of Essex and Suffolk Water. NWG abstracts water from […]

Horsley WTW (2017)

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 […]

Littlemore Sewage Pumping Station (2017)

As part of the Thames Water AMP5 programme of works, Optimise was instructed to carry out an upgrade to the terminal pump station feeding Oxford STW located in Littlemore, Oxford. The terminal pump station handles flow from a population of 200,000 and the condition of the station was of considerable concern to the Environment Agency, […]

Llyn Teifi Spillway Rehabilitation Works (2017)

Llyn Teifi Reservoir is situated in a remote area on the western slopes of the Cambrian Mountains in Ceredigion, west Wales, and was created in the early 1960s by raising a natural lake. It is impounded behind six embankments constructed across natural low spots along its south-western margin, covering an area of just over 25 […]

Margate & Broadstairs Wastewater Pumping Stations (2017)

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, […]

Mogden STW (2017)

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 […]

Netheridge STW (2017)

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 […]

Saltend WwTW (2017)

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 […]

Walton Eel Screens (2017)

In January 2010 the Eels (England and Wales) Regulations 2009 came into force which gave the Environment Agency new powers to protect and to conserve the population of eels in the rivers of England and Wales. The abstraction point for Thames Water’s Walton Advanced Water Treatment Works in Walton, Surrey, removed a maximum of 900ML/D […]

Whitburn Spill Reduction (2017)

Northumbrian Water is required to provide investment to reduce spills at Whitburn and St Peter’s, Sunderland in order to comply with the requirements of the Urban Waste Water Treatment Directive (UWWTD) by December 2017. Sunderland (north) is an urban catchment of predominantly residential properties and is home to Sunderland’s Blue Flag award winning beaches at […]

Woolmans Wood Phase 2 (2017)

Between 2011 to 2013, Southern Water invested £14m replacing old water mains in the Chatham, Gillingham and Rochester. An additional £8 million is now being invested to replace a further 28km of 85-year-old water mains and service pipes to further improve water supply pipes and reduce the risk of discoloured water. The Chatham supply zone […]

Woolston WwT Scheme - Part 2 (2017)

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 […]

BRP - Treated Water Project - Birmingham Resilience Project (2016)

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 […]

Fellgate Surface Water Management (2016)

Fellgate estate in Jarrow, Tyne and Wear has a history of flooding and suffered extensive property flooding in 2012, affecting 175 properties. Flooding originated from sewers, highway drainage, runoff from land, small water courses and ditches during heavy rainfall. Northumbrian Water and the local authority South Tyneside Council share responsibility for surface water management and […]

Hastings Bathing Water Improvement Scheme (2016)

Hastings Beach on the southern coast of the UK was identified at risk of failing the European Union revised Bathing Water Directive. If the bathing water failed, Hastings Borough Council (HBC) would be legally required to put up signs warning the public of poor water quality. MWH (now Stantec UK) targeted ‘high beneficial’ interventions by […]

Highbridge SPS Stormwater UV Disinfection (2016)

Being classed as ‘poor’ quality, the bathing water at Burnham Jetty was predicted to fail under the revised Bathing Water Directive (rBWD). Investigations during AMP5 showed that improvements to sewage overflows at Highbridge and Bridgwater were necessary to improve compliance; with disinfection of the stormwater discharge at Highbridge Sewage Pumping Station (SPS) being identified for […]

Turners Road Penstock Chambers Upgrade (2016)

As part of the Thames Water (TW) AMP5 programme of works, it was necessary to remove and upgrade condemned platforms within two interlinked penstock chambers on the Low Level No. 1 (LL1) and Low Level No. 2 (LL2) sewers, which are two of the largest and most important in London. The chambers sit beneath a […]

Woolston WwT Scheme - Part 1 (2016)

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 […]

Woolston WwT Scheme (2015)

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 […]

Nature-based solutions: Using engineering and nature to solve environmental challenges