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  • Frome Valley relief sewer

    We are investing around £15 million in building a new sewer which will ensure our system copes with ongoing and future development in North Bristol and South Gloucestershire.

    The Frome Valley relief sewer will enable us to provide a additional capacity for new developments in areas such as Yate, Emersons Green, Bradley Stoke and Filton, where thousands of new homes are being built.

    Frome valley sewer map

    Frome valley sewer map key

    The first sections of the Frome Valley relief sewer were laid in areas of North Bristol and Yate in South Gloucestershire in the 1980s and 1990s.

    The next phase is to construct a 5km long, 1.8m diameter sewer pipe that will run from Iron Acton, north of Frampton Cotterell, and then westwards to Bradley Stoke. Most of the work will be carried out in fields rather than roads.

    Once built, the sewer will divert waste water flows from South Gloucestershire to Bristol water recycling centre at Avonmouth via a route around the north of Bristol, rather than alongside the Frome Valley and through the centre of Bristol.

    Diverting the flows will provide additional capacity for the new developments and significantly reduce the risk of sewer flooding in the area.

    The Frome Valley relief sewer is one of many projects included in our £2 billion investment programme to maintain and improve services between 2015 and 2020.

    As part of our sewerage strategy beyond 2020, long-term planning has already started on the North Bristol relief tunnel which will transfer flows directly from the North of Bristol to Avonmouth water recycling centre.

    The tunnel will start at Bristol Golf Club and pass deep beneath Catbrain, Henbury and Lawrence Weston. Construction is expected to start in late 2019 for completion by 2023.

    Latest update

    Our work is almost complete.

    The pipework has been laid and over the next two to three months we will be building inspection covers, reinstating the topsoil and tidying up the site. 

    We anticipate that all the work will be finished by September 2018.

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