The Drinking Water Inspectorate works with a number of organisations concerned with the provision of drinking water.

This section provides information mainly of interest to Water companies and new entrants to the water industry, Local authorities and other regulators.

If you are unable to find what you are looking for please contact us on dwi.enquiries@defra.gov.uk.

Liaison and cascade list for notifications

Request an accessible format.
If you use assistive technology (such as a screen reader) and need a version of this document in a more accessible format, please email dwi.enquiries@defra.gov.uk. Please tell us what format you need. It will help us if you say what assistive technology you use.