Welcome to DWI

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.


What's new?

19 June 2018

The Drinking Water Inspectorate has today published a consolidated review (PDF 254KB) of the widespread loss of supplies arising from the freeze/thaw events affecting England and Wales in March 2018.

5 June 2018

United Utilities fined for drinking water offences(PDF 59KB)

10 May 2018

The Network and Information System (NIS) Regulations come in to force today. For further information and guidance please our NIS Homepage.

30 April 2018

Chief Inspector Reports 2017 Q1 and Q2 are now published

19 March 2018

DWI will be moving offices on 26 March 2018. Our new address can be found in Contact Us.

29 January 2018

New Welsh Information Notes to align with the Private Water Supply (Welsh) Regulations 2017




Page last modified: 19 June 2018.
Page reviewed: 19 June 2018

Drinking Water Inspectorate