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Welcome to the

Drinking Water Inspectorate

The Drinking Water Inspectorate (DWI) was formed in 1990 to provide independent reassurance that water supplies in England and Wales are safe and drinking water quality is acceptable to consumers.

Drinking Water 2021

Safe, clean drinking water is vital to public health and the wellbeing of our society, now and into the future. This is the central tenet of the vision and strategy of the Drinking Water Inspectorate. Drinking Water 2021 published in July 2022.

View the 2021 report

Triennial Reports 2017-2019

Three yearly report for both England and Wales on the quality of drinking water to inform consumers

View the triennial reports

Highlights

What we do

Consumers

Water companies

Private water supplies

Drinking Water Products

Research

What’s new?

30 May 2023 – Wessex Water Services Limited fined for drinking water offence 

The Drinking Water Inspectorate has issued a press release after sentencing took place in the case taken by the Inspectorate against Wessex Water Services Limited.…

Job Vacancy – Inspector – Network and Information Systems

The Inspectorate is seeking a talented individual to join the team as an Inspector – Network and Information Systems (NIS). The NIS Regulations extend the…

Consolidated review of the widespread loss of supplies arising from the freeze/thaw event affecting England in December 2022

We have published the report Consolidated review of the widespread loss of supplies arising from the freeze/thaw event affecting England in December 2022.

Drinking Water 2022 – Quarter 4 published

We have published Drinking Water 2022 – Quarter 4 report.

Job Vacancy – Drinking Water Inspector

The Drinking Water Inspectorate is seeking two talented individuals with skills and/or experience in drinking water supply/water quality to join its team, ensuring high quality…

Investigation into the Water Quality Event of PFOS Contamination in Duxford

We have published our findings from an investigation into the PFOS contamination from Duxford to Cambridge rural Supply Zone. 
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Regions in England and Wales

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Water Companies

Use our map to find your local water company

Find contact details, report a problem, look at incidents in your area.

See ongoing improvement in your area, how your water company is improving and find the water quality in your area.

Find your local company

Contact Us

Water quality

If you are concerned about the quality of your drinking water you should contact your water company in the first instance. A number for your water company can be found here.

 

Learn more about your water

The Drinking Water Inspectorate provides information and advice to consumers on the quality of drinking water.

Advice for finding a plumber
Algae in drinking water
Animals in drinking water
Bills and compensation
Blue water/Copper in drinking water
Boil water notice
Bottled water
Chlorine

View all leaflets