Wessex Water
Wessex Water covers an area of around 10,000 square kilometres which includes Dorset, Somerset, Bristol, most of Wiltshire and parts of Gloucestershire and Hampshire.
Approximately 284 million litres of water is supplied to 1.3 million people every day from a network of 97 water sources, 110 water treatment works, 209 pumping stations (used to supply water to customers), 340 service reservoirs and water towers and 11,509 km of water mains. Wastewater services are provided for 2.7 million customers with 475 million litres of sewage being treated each day. The company’s sewerage system includes 405 sewage treatment works, 1,003 combined sewer overflows, 1,515 pumping stations and more than 30,000 km of sewers.
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 […]
Water Treatment and Supply
Water Treatment Works
Sherston S101a - First Time Sewerage Scheme (2023)
Section 101a of the Water Industry Act requires that sewerage providers deliver and fund first time sewerage (FTS) schemes where the current drainage for two or more properties is unsatisfactory and where a public solution is viable. Unsatisfactory drainage includes situations where environmental or amenity problems caused by uncontrolled discharges from septic tanks or cess […]
Sewage Pumping Stations
Sewers
Wastewater Treatment and Sewerage
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 […]
Water Treatment and Supply
Water Treatment Works
West Huntspill WRC Bathing Waters Improvements (2021)
West Huntspill Water Recycling Centre (WRC) is a Wessex Water facility situated south of Highbridge in West Somerset. This environmentally sensitive site is within a National Nature Reserve and adjacent to a Site of Special Scientific Interest and a Special Protection Area (Bridgewater Bay and the Severn Estuary). The facility serves a catchment of 62,000 […]
Sewage Pumping Stations
Sludge Treatment
Wastewater Treatment and Sewerage
Wastewater Treatment Works
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 […]
Water Treatment and Supply
Water Treatment Works
Water Supply GRID - Conclusion (2019)
The Water Supply GRID is the largest scheme ever undertaken by Wessex Water and provides important new infrastructure for the south-west region with resilience connections to Bournemouth Water, Bristol Water and South West Water via Wimbleball Reservoir – it is effectively a south-west area regional grid (see Figure 1 below). It has improved interconnectivity within […]
Pipelines
Pressure Management
Pumping Stations
Reservoirs and Storage
Water Treatment and Supply
Frome Valley Relief Sewer (2018)
The Frome Valley Relief Sewer scheme represents a £15m capital investment by Wessex Water to provide additional capacity for the continued development within the North Bristol area. It is the third phase out of a total of four phases which will see wastewater flows diverted from South Gloucestershire to Avonmouth Sewage Treatment Works in Bristol […]
Sewer Flood Alleviation
Sewers
Wastewater Treatment and Sewerage
Avonmouth Acid Phase Digestion Remedials (2017)
Wessex Water’s Bristol STW is the largest sewage treatment works within south west region, serving approximately a catchment of 1.1 million people. The works also accounts for more than 50% of region’s sludge treatment. It treats around 100 tonnes dry solid (TDS) per day of indigenous sludge as well as imported sludge to a compliant […]
Renewable Energy
Sludge Treatment
Wastewater Treatment and Sewerage
Wastewater Treatment Works
Bristol Road Sewer Pumping Station (2017)
Burnham Jetty is the only ‘poor’ bathing water site in the Wessex Water region as categorised by the EU Revised Bathing Water Directive. Wessex Water has been working with the Environment Agency and committed £39 million to 12 schemes to improve this rating. Bristol Road Sewer Pumping Station (SPS) and Combined Sewer Overflow (CSO) rebuild […]
Sewage Pumping Stations
Wastewater Treatment and Sewerage
Fisherman’s Walk Rising Main (2016)
Situated on the Boscombe promenade in Bournemouth on the south coast of England, one of Wessex Water’s sewage pumping station serves a small number of toilet blocks and cafés, connecting them to the main sewerage network. The pumping station is located at the bottom of a steep cliff, 35m high, with a 100mm cast iron […]
Sewers
Wastewater Treatment and Sewerage
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 […]
Sewage Pumping Stations
Wastewater Treatment and Sewerage
Portbury Wharf STW (2016)
Situated 2 miles from the coastal town of Portishead on the Severn Estuary, Portbury Wharf STW was granted its first consent to operate in 1987. The site underwent a refurbishment in late 2015 and currently services Portishead and the surrounding area, equating to a population in the region of 32,000. Portbury Wharf is comfortably equipped […]
Wastewater Treatment and Sewerage
Wastewater Treatment Works
Water Supply GRID - Alton Pancras WTW (2015)
Wessex Water are providing additional security of supply and additional strategic storage within the water distribution network in West Dorset
Pipelines
Pumping Stations
Reservoirs and Storage
Water Treatment and Supply
Water Treatment Works
Avonmouth Biomethane Project (2015)
GENeco gas to grid scheme at Bristol STW
Anaerobic Digestion
Gas to Grid
Renewable Energy
Berry Hill STC & Taunton STW (2015)
£16m of improvements to sludge digestion facilities
Anaerobic Digestion
Renewable Energy
Sludge Treatment
Wastewater Treatment and Sewerage
Wastewater Treatment Works
Charlton Hayes Interceptor Sewer (2015)
Providing a sewer connection to a 2,200 property development via a 30m deep shaft in a dense residential area
Sewers
Wastewater Treatment and Sewerage
Christchurch STW (2015)
Growth scheme - additional treatment capacity for existing sewage treatment works
Wastewater Treatment and Sewerage
Wastewater Treatment Works
Water Supply GRID - Sturminster Marshall to Snowsdown Pipeline (2015)
Wessex Water's 9km twin main is the first section of the trunk main to be installed in its flagship project
Pipelines
Pumping Stations
Water Treatment and Supply
Water Supply GRID - Allington Reservoir (2014)
Wessex Watre's upgrade capacity by 5Ml to ensure security of supply and meet future area demands
Reservoirs and Storage
Water Treatment and Supply
Bristol (Avonmouth) STW - Additional Screening (2014)
£2.5m upgrade of major sewage treatment works requiring additional screening
Wastewater Treatment and Sewerage
Wastewater Treatment Works
Electro Scan (2014)
A quantum leap in the identification of sewers subject to groundwater infiltration
Sewers
Wastewater Treatment and Sewerage
Keynsham Requisition Sewer (2014)
A £1.7m requisitioned sewer project serving a 560-property development
Sewers
Wastewater Treatment and Sewerage
Taunton Operation Clean and Clear (2014)
Modernising ageing water mains in Taunton and surrounding areas
Pipelines
Water Treatment and Supply
Taunton STW (2014)
Major upgrade to largest sewage treatment works in Somerset as part of a staged set of improvements
Wastewater Treatment and Sewerage
Wastewater Treatment Works
Water Supply GRID - Update (2014)
Wessex Water’s 8-year programme to resolve resilience issues within the water supply network
Pipelines
Pumping Stations
Water Treatment and Supply
Wimbleball Dam Grouting Project (2014)
A new grout curtain constructed beneath Wimbleball Dam has reduced leakage to the lowest recorded rate since construction
Reservoirs and Storage
Water Treatment and Supply
Chilthorne Domer STW (2013)
Construction of package sewage treatment works to eliminate unconsented discharge to highway watercourse
Wastewater Treatment and Sewerage
Wastewater Treatment Works
Water Supply GRID - Eliminination of Standalone Sources (2013)
Wessex Water's elimination of standalone sources
Pipelines
Water Treatment and Supply
Hawkridge Dam (2013)
Concrete repairs to improve the life of the structure
Reservoirs and Storage
Water Treatment and Supply
Holdenhurst STW - Inlet Works (2013)
Inlet screens and screenings handling plant replacement
Wastewater Treatment and Sewerage
Wastewater Treatment Works
Knightcott to Banwell (M5) Sewer Repair (2013)
Collaboration between agencies to renovate strategic sewer under the M5 motorway in Somerset
Sewers
Wastewater Treatment and Sewerage
Poole STW - Inlet Works (2013)
New inlet works to prevent compliance problems
Wastewater Treatment and Sewerage
Wastewater Treatment Works
Shepton Mallet STW (2013)
Phosphorus removal under the Urban Waste Water Treatment Directive and major capital maintenance investment
Wastewater Treatment and Sewerage
Wastewater Treatment Works
Trowbridge STW - Acid Phase Digestion Plant (2013)
Acid phase digestion generating green energy with advanced digestion
Renewable Energy
Sludge Treatment
Wastewater Treatment and Sewerage
Wastewater Treatment Works
Columbia Road FAS (2012)
Surface water flood alleviation project in Bournemouth
Sewer Flood Alleviation
Sewers
Wastewater Treatment and Sewerage
Tarrant Crawford STW (2012)
Growth scheme – additional capacity for existing STW near Blandford Forum in Dorset
Wastewater Treatment and Sewerage
Wastewater Treatment Works
Tucking Mill WTW (2012)
A complete redesign and rebuild in the confines of surrounding woodlands and narrow access roads
Water Treatment and Supply
Water Treatment Works
Weston-super-Mare STW (2012)
£25m upgrade of major sewage treatment works at coastal town
Wastewater Treatment and Sewerage
Wastewater Treatment Works
Ashton Avenue Pumping Station (2011)
Refurbishment & upgrade of a critical pumping station
Sewage Pumping Stations
Wastewater Treatment and Sewerage
Water Supply GRID - Chirton Phase 2 Pipeline (2011)
Wessex Water's elimination of standalone source
Pipelines
Water Treatment and Supply
Danesborough Water Supply Zone 21 (2011)
£11.5m scheme to rehabiliate 30km of water mains in the Bridgwater area
Pipelines
Water Treatment and Supply
Poole STW - Control Equipment (2011)
Wessex Water’s £730,000 project to replace ageing control and monitoring system
Wastewater Treatment and Sewerage
Wastewater Treatment Works
Upton Scudamore WTW (2011)
A £1.4m cryptosporidium treatment scheme to safeguard drinking water quality
Water Treatment and Supply
Water Treatment Works
Evershot STW (2010)
£2.2m dry weather flow exceedence scheme
Wastewater Treatment and Sewerage
Wastewater Treatment Works
Salisbury STW (2010)
Significant modifications and additions to the existing works needed
Wastewater Treatment and Sewerage
Wastewater Treatment Works
Aqualiner (2009)
A new process for the lining of water and sewer pipes
Pipelines
Water Treatment and Supply
Bristol City Flood Alleviation (2009)
£9m project to give the city centre area a 1 in 50 year storm protection
Sewer Flood Alleviation
Stormwater Storage
Wastewater Treatment and Sewerage
Holt & Gaunts Common Sewerage Schemes (2009)
First time sewerage for 300 properties in Dorset
Sewers
Wastewater Treatment and Sewerage
The Limes Flood Prevention Scheme (2009)
Side entry manholes and stop end bends
Sewer Flood Alleviation
Sewers
Wastewater Treatment and Sewerage
Bristol (Avonmouth) STW - Advanced Sludge Treatment (2008)
£35m scheme increases electrical self generation at sludge centre
Renewable Energy
Sludge Treatment
Wastewater Treatment and Sewerage
Wastewater Treatment Works
Bristol City Flood Alleviation (2008)
Flood alleviation tunnel
Sewer Flood Alleviation
Sewers
Stormwater Storage
Wastewater Treatment and Sewerage
Plimsoll CSO (2008)
Much more than just treading water
Sewer Flood Alleviation
Sewers
Wastewater Treatment and Sewerage
Poole STW - Upgrade (2008)
£11m upgrade of major sewage treatment plant at coastal town
Wastewater Treatment and Sewerage
Wastewater Treatment Works
Ratfyn STW (2008)
Upgrade of the STW which serves village & nearby communities
Sludge Treatment
Wastewater Treatment and Sewerage
Wastewater Treatment Works
Sutton Bingham Dam (2008)
Sutton Bingham Dam remedial work
Reservoirs and Storage
Water Treatment and Supply
Corfe Mullen STW (2007)
Replacement screens and screenings handling
Wastewater Treatment and Sewerage
Wastewater Treatment Works
Kilve STW (2007)
A high impact yet low profile solution
Wastewater Treatment and Sewerage
Wastewater Treatment Works
Malmesbury STW (2007)
New parallel process stream increases treatment capacity
Wastewater Treatment and Sewerage
Wastewater Treatment Works
Maundown WTW (2007)
£25m works rebuild by Wessex Water
Water Treatment and Supply
Water Treatment Works
Yeovil Storm Sewer Renovation (2007)
Customer care & environment concerns key to success
Sewers
Wastewater Treatment and Sewerage
Chew Stoke STW (2006)
Extensions required to meet growing demands
Wastewater Treatment and Sewerage
Wastewater Treatment Works
Clarendon WTW (2006)
High tech in the countryside
Water Treatment and Supply
Water Treatment Works
Monkton Combe Emergency Water Supply (2006)
Safeguarding city of Bath water supply during future droughts
Pumping Stations
Raw Water Source
Water Treatment and Supply
Water Treatment Works
Paulton STW (2006)
£3.1 million project delivered one year ahead of Ofwat deadline
Wastewater Treatment and Sewerage
Wastewater Treatment Works
Bath CSOs (2005)
£28.5m scheme to solve uCSO problems in sensitive area
Sewer Flood Alleviation
Sewers
Wastewater Treatment and Sewerage
Bridgewater UIDs (2005)
£5 million project cures overflows from six pumping stations
Sewer Flood Alleviation
Stormwater Storage
Wastewater Treatment and Sewerage
Charmouth STW (2005)
£4.5 million upgrade at Wessex Water’s south coast plant
Wastewater Treatment and Sewerage
Wastewater Treatment Works
Dorchester Water Supply (2005)
Resolving existing operational water supply problems
Reservoirs and Storage
Water Treatment and Supply
Emergency Water Treatment Works (2005)
6.6Ml/d WTP can be deployed in four shipping containers
Water Treatment and Supply
Water Treatment Works
Gillingham (Dorset) STW (2005)
Meeting high rate of housing development
Wastewater Treatment and Sewerage
Wastewater Treatment Works
Nitrate and Pesticide Reduction Programme (2005)
Wessex Water Services AMP 4 programme
Water Treatment and Supply
Water Treatment Works
Ringstead Sewerage Scheme (2005)
First time system for outstanding natural beauty area
Sewers
Wastewater Treatment and Sewerage
Wastewater Treatment Works
Shaftesbury STW (2005)
Major upgrade & new ASP meets increasing demand
Wastewater Treatment and Sewerage
Wastewater Treatment Works
Thornbury-Aust Pipeline & Outfall (2005)
£3.5m treated sewage outfall into Severn Estuary
Outfalls
Sewers
Wastewater Treatment and Sewerage
Wool STW (2005)
£9m investment improves bathing water quality at resort
Wastewater Treatment and Sewerage
Wastewater Treatment Works
Bristol Redland CSO (2004)
Part of Wessex Water’s programme to address 526 UIDs
Sewer Flood Alleviation
Wastewater Treatment and Sewerage
Kinson, Palmersford & Wimbourne STWs - UV Disinfection (2004)
Installing tertiary ultraviolet (UV) disinfection
Wastewater Treatment and Sewerage
Wastewater Treatment Works
Nether Stowey STW (2004)
Improvements & meeting tighter consent
Wastewater Treatment and Sewerage
Wastewater Treatment Works
Radipole Sewage Pumping Station (2004)
Major improvements in restricted site & timescale
Sewage Pumping Stations
Wastewater Treatment and Sewerage
Taunton (Ham) STW (2004)
A challenge to meet tighter ammonia standards
Wastewater Treatment and Sewerage
Wastewater Treatment Works
Bath CSOs (2003)
£28m scheme to remove flooding & pollution risks
Sewer Flood Alleviation
Sewers
Wastewater Treatment and Sewerage
Black Lane (Blandford) WTW (2003)
High recovery ion exchange process for nitrate removal
Water Treatment and Supply
Water Treatment Works
Bristol (Avonmouth) STW - CHP (2003)
New £4m CHP plant saves cash & the environment
Renewable Energy
Wastewater Treatment and Sewerage
Wastewater Treatment Works
Bristol (Avonmouth) STW - Storm Tanks (2003)
Precast concrete panels for storm tanks saved time and cost
Stormwater Storage
Wastewater Treatment and Sewerage
Crewkerne East STW (2003)
Upgrading to meet tighter standards & added storm capacity
Wastewater Treatment and Sewerage
Wastewater Treatment Works
Friar Waddon WTW (2003)
Cryptosporidium protection for strategic water supply
Water Treatment and Supply
Water Treatment Works
Lytchett Minster STW (2003)
New storm treatment & UV disinfection
Sewage Pumping Stations
Wastewater Treatment and Sewerage
Wastewater Treatment Works
Poole STW - UV Disinfection & Storm Tanks (2003)
£4m project improves discharges quality in Poole harbour
Stormwater Storage
Wastewater Treatment and Sewerage
Wastewater Treatment Works
Urchfont STW (2003)
Tertiary BAFF plant for small Wilts village
Wastewater Treatment and Sewerage
Wastewater Treatment Works
Avonmouth WwTW (2002)
Sludge digestion enhancement using ultrasound technology
Sludge Treatment
Wastewater Treatment and Sewerage
Wastewater Treatment Works
Bristol WwTW (2002)
Secondary treatment upgrade & storm tank storage
Stormwater Storage
Wastewater Treatment and Sewerage
Wastewater Treatment Works
Corfe Mullen WTW (2002)
Cryptosporidium protection scheme
Water Treatment and Supply
Water Treatment Works
Poundbury STW (2002)
Upgraded STW for prestigious scheme
Wastewater Treatment and Sewerage
Wastewater Treatment Works
Washpool WTW (2002)
Cryptosporidium protection scheme
Water Treatment and Supply
Water Treatment Works
Westbury STW (2002)
Plant extensions to meet increased demand
Wastewater Treatment and Sewerage
Wastewater Treatment Works