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Water supply and sewerage

0345 600 4 600

Monday to Friday, 8am to 6pm (emergencies only at other times)

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  • Water network

    We treat and supply 280 million litres of water a day to 1.3 million customers - approximately one tonne of water to every customer weekly across the south west of England including Dorset, Somerset, Bristol, most of Wiltshire and parts of Gloucestershire and Hampshire.

    We have:

    • 180 water sources and water treatment works
    • 200 booster pumping stations
    • 300 service reservoirs and water towers
    • 11,800 kilometres (7,300 miles) of water mains.

    Wessex Water supply area


    We have reduced leakage to 68.3Ml/d, below the agreed target of 68.6Ml/d for 2016-17.

    We are one of only two companies to commit to fixing as many reported leaks as possible within a single day - and this year we raised the bar to 70%.


    leaks fixed in 2016 as well as 4,285 leaks on private supply pipes courtesy of our free leak repair service.

    Our target to fix significant leaks on the network reported to us by customers has been met, mainly by improving existing processes and procedures. 

    Infrastructure improvements

    Our major integrated supply grid project remains on track to be completed in 2018. This grid will enable us to:

    • reduce abstractions from sensitive groundwater sources
    • move water more efficiently around our region
    • ensure future demand is met
    • improve the resilience of supplies to our customers.

    All the main pipelines have been laid and work is well advanced on the final parts of the scheme at Black Lane in Blandford and Codford, near Warminster. 

    For the first time ever we have transferred water between our southern and northern resource zones, delivering some of the benefits of this investment in advance of the target completion date.

    In 2016-17 we have reduced the number of properties supplied by a single source by a further 30,000 ahead of the agreed programme. 

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