Welcome to theDrinking 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 reportTriennial Reports 2017-2019
Three yearly report for both England and Wales on the quality of drinking water to inform consumers
View the triennial reportsWhat’s new?
The DWI initiated research into fully quantitative analytical methods for 20 PFAS for use in testing drinking water in 2020, and the Method has now…
DWI commissioned this literature review gap analysis project to understand whether OPFRs are likely to occur in source waters and drinking water. The project identified…
The Drinking Water Inspectorate have issued a press release after sentencing took place in the case taken by the Inspectorate against South West Water. At…
The Drinking Water Inspectorate (DWI) Enquiries Line will be changing to the following number with immediate effect: 0330 041 6501. There will be a short period…
The Company Statistics for 2021 have now been published.
Information Letter 04/2022 Annual Consumer Contacts has been published.
The Inspectorate has a vacancy for a Principal Inspector – Security and Emergency Measures Direction (SEMD). The Inspectorate is seeking an engineer, applied scientist or…
A guidance note on long term planning for the quality of drinking water supplies has been published.
We are excited to launch StreamLine, the regulatory advice service for innovators and businesses in England and Wales. StreamLine is run jointly by the Drinking…
05Regions in England and Wales
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
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.
