We’re currently experiencing an issue with our Water Support online form. Please call us on 01737 785606 if you want to apply. For all other queries, please visit our Contact Us page.

Contact us

Water quality

We have amongst the highest water quality in the UK.

Water quality

All drinking water in the UK has to comply with stringent standards set by the Water Supply (Water Quality) Regulations, which incorporate the requirements of the European Drinking Water Directive.

Compliance in England and Wales is strictly monitored by the Drinking Water Inspectorate (DWI). The DWI
independently reviews all water companies' test results and audits their water quality testing laboratories.

It publishes an annual report which summarises the water quality standards achieved by regions and individual companies. This allows consumers to check their water supplier's performance and to find out about events and incidents which must be notified to the DWI.

Each year, we carry out approximately 120,000 tests on around 13,000 samples taken from every point in our supply chain. Water sources, treatment works, storage reservoirs and randomly selected customer taps all come under scrutiny. We regularly achieve more than 99.5 per cent compliance with industry standards.

Our laboratory is UKAS accredited, an internationally recognised quality standard which covers all aspects of activity from sampling and analysis through to reporting the results.

Explore more about water quality

You may also be interested in:

icon showing hand catching water

Save water and money Water saving advice for you, your home and the environment

icon showing landscape

Where your water comes from Why the environment and rainfall is so important

icon showing hand holding leaf

Catchment management How we work to look after our raw water sources