Barrow to Chelvey

Project Outline

The Chelvey to Barrow renovation scheme is part of a project to renovate 22km of mains in the area. These mains, parts of which were originally laid in the 1860s, supply treated water to the Backwell, Nailsea, Flax Bourton, Barrow Gurney and Long Ashton areas as well as directly into Bristol. The work is needed to improve water quality and ensure the security of water supply for the future. This work will renovate two pipes one at a time.

Length and project duration

  • SCHEME ONE – 8km, 14 inch Chelvey to Barrow treatment works – completed late 2013.
  • SCHEME TWO – 8km, 21 inch Chelvey to Long Ashton – This work commenced Jan 2014 and will be completed towards early 2015.


We are pleased to confirm that the final sections of new plastic pipe in this set of schemes have now been installed, tested and commissioned. We are now entering the final phase of the project. This will involve completing permanent connections from the new pipe to the surrounding network.

There is still some work to be completed on re-connecting the pipe at the following locations:

Flax Bourton: Stancombe Lane, The Grange, Station Road, Chuch Lane.


Outstanding works in Flax Bourton will now be carried out from 29th June for a period of approx 3 weeks during which time, 2-way traffic lights will be used.


We apologise for the inconvenience caused during the completion of these works.

Our teams on site aim to assist any affected residents or road users wherever possible – should you require assistance as a result of our works, please look out for Land & Marine staff with yellow ‘Here to Help’ stickers on their hard-hats. The work is being carried out by our contracting partner Land & Marine Engineering Limited (L&M).


Scheme Facts

  •  As part of our overall programme of trunk mains renovation works for 2010-2015, we replaced or renovated 22km of trunk mains in the North Somerset area.   The areas which can be supplied through these pipes include Long Ashton, Flax Bourton, Barrow Gurney, Backwell, Chelvey, Farleigh, Failand, Abbots Leigh, Cleeve, Brockley, Nailsea, Claverham, Congresbury, Kingston Seymour, Yatton, Tickenham, Wraxall, Clapton in Gordano, Clevedon, Kenn, West End, Walton in St Mary, Weston in Gordano and Portishead.
  • Over 47,940 man-hours have been worked to date on this project.
  • The longest single section of pipe installed between pits was 1,200 metres.
  • The renovated pipelines can transport up to 20 million litres a day, providing water for up to 100,000 people in the North Somerset area.