Water network

We operate an extensive network of over 12,000 kilometres of water mains supplying water to 1.4 million customers across the South West of England.

About our water supply network

We continuously invest in our water supply network by renewing ageing water mains as well as maintaining and improving facilities that help store and move water around our region to supply a safe and reliable water supply to our 1.4 million customers.

Our water network in numbers


kilometres of water mains


water sources and treatment centres


service reservoirs and water towers

Fixing leaks on our network

Every day we work hard to locate and repair leaks on our network to help save water. We are committed to meeting our 15% leakage reduction commitment between 2020 and 2025.

We have reduced leakage to 64.1Ml/d (million litres per day), below the agreed target of 65.1Ml/d for 2020-2021 and repaired 92% against a 90% target of reported leaks by the end of the next working day. We are one of only two companies to commit to fixing as many reported leaks as possible within a single day.

Our year to date figures are:

  • 15,265 repaired leaks between 01/04/2023 and 31/03/2024.
  • 1,447 customer reported significant leaks repaired by the end of the next working day between 01/04/2023 and 31/03/2024.

Meeting water supply demand

Meeting increasing water demand will be critical to ensuring we deliver a sustainable and continuous water supply for our customers and the future whilst protecting and enhancing the environment.

Our £230m supply grid project was completed in 2018 and allows is to redistribute from areas where there is surplus water to where it is needed most.

This ensures:

  • customers have a more reliable supply
  • we can meet the demand for water over the next 25 years without having to develop new water resources
  • less water is abstracted from the environment, so river flows are improved. 

Water Resources Management Plan

Our Water Resources Management Plan outlines how we will continue to balance water supplies with water demands to ensure adequate supply for our customers, while also protecting the environment.