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South East Water

Each day South East Water supplies 565 million litres of treated water to 2.1 million customers (880,000 properties) across 5,657 square kilometres of Kent, Sussex, Surrey, Hampshire and Berkshire.

The company draws raw water from more than 250 boreholes, six rivers and six reservoirs, which is treated at one of 93 water treatment works. Once treated, water is distributed throughout the region via a network of more than 14,500 kilometres of mains.

Beenhams Heath WTW (2021)

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 […]

Bray Keleher WTW (2020)

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 […]

College Avenue Contact Tank (2020)

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 […]

Bray Keleher WTW (2019)

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). […]

Hazards Green WTW - Eel Screens (2019)

Hazards Green WTW is a South East Water treatment works situated near Ninfield in East Sussex. The works abstracts river water directly from the Wallers Haven and following treatment, supplies a large volume of commercial and domestic customers in the surrounding areas. Prior to this scheme the existing abstraction point had ageing static, coarse trash […]

Hoplands Farm WTW (2017)

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 […]

Kingston WTW Microfiltration Project (2017)

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 […]

Trosley to Beech Strategic Mains Renewals (2017)

In recent years there have been a number of complex bursts at the edge of the M20 motorway in Kent, where three trunk mains cross via an existing tunnel. The bursts have compromised the security of supply between South East Water’s (SEW) Trosley Pumping Station and Beech Reservoir and also flooded onto the hard shoulder […]

Burham Strategic Water Main (2016)

By delivering its largest and most challenging pipeline scheme to date, South East Water has secured the water supply to thousands of homes and businesses in north Kent and provided the area with critical new infrastructure needed to promote development and growth for decades to come. All while enhancing the environment and reducing operational costs. […]

Waterworks Road WTW Microfiltration Project (2016)

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 […]

Hazards Green WTW (2015)

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

Swinley Forest Strategic Water Main Installation (2015)

3.7km pipeline to storage & transfer capacity and be prepared for development & population growth in the region

Cramptons Road WTW (2014)

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

Cryptosporidium Inactivation Projects (2014)

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

Advanced Pressure Management (2013)

South East Water has reduced average pressure by 17.7% and is saving 4.9 million litres of water daily

AMP5 Capital Programme (2013)

Relationship based approach adopted by South East Water and Jacobs leads to savings and efficiencies

Friston to Folkington Mains Transfer Scheme (2013)

Securing supply to 40,000 residents in East Sussex

Tonbridge WTW (2012)

Works upgrade and cryptosporidium UV treatment

Hindhead Reservoir (2011)

New 5Ml service reservoir to maintain supplies to 12,500 customers in the Hindhead, Grayshott and Bramshott

Shellbrook WTW (2011)

Improvements to provide availability throughout the year

Trosley & Borough Greeen WTW (2010)

£7 million upgrade to improve quality and meet increased demand

Cranbrook Service Reservoir (2009)

New 10Ml service reservoir constructed at Cranbrook

Bray Pipeline Stage 2 (2008)

New water main between Bray WTW & Surrey Hill Reservoir

Wichling Turbidity Removal Scheme (2008)

Turbidity removal scheme

Ford Reservoir (2006)

New service reservoir for Mid-Kent Water

Hazards Green WTW (2006)

£8.6m WTP adding treatment line to meet environmental challenges

Genetic Algorithms (2005)

Brings 11% cost savings to Mid Kent Water

Semi-Structural Resin Pipe Lining (2005)

Successful trials by South East Water

Greywell WTW (2004)

Efficient water production for the 21st Century

Mid-Kent Water Mains Renovation (2004)

£18.5m scheme with a customer focus

Groombridge WTW (2003)

Conventional & biological treatment working together

Bunkers Hill Mains Relining (2002)

New lining system renovates bursting water main

Venford to Paignton Mains Rehabilitiation (2002)

Rehabilitation of 100 years old water main