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?

5 June 2018

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

29 May 2018

Guidance on the Water Supply (Water Quality) Regulations in England and Wales - revised draft published for consultation

Water Companies are invited to comment on the revised Guidance, available on the DWI's consultation webpage. The consultation closes on 15 June 2018.

Defra has published a summary of the responses received to its consultation on the amendment regulations, which can be found here.

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

21 December 2017

Information Letter 04/2017(PDF 63KB) on the Regulatory sampling programme

5 December 2017

Drinking Water Inspectorate publishes press release and assessment report into Copeland event

The Drinking Water Inspectorate has today published the assessment report (PDF 28.19MB) of the Copeland event in June 2017 caused by the changing nature of the drinking water supply to approximately 67,000 consumers in Whitehaven, Workington, Seascale and the surrounding area. A Press Release (PDF 101KB) has also been issued.





Page last modified: 6 June 2018.
Page reviewed: 6 June 2018

Drinking Water Inspectorate