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Last edited 19 Nov 2021
Drinking water quality
Drinking water quality is overseen in England and Wales by the Drinking Water Inspectorate (DWI). The Drinking Water Inspectorate is part of the Department for Environment, Food and Rural Affairs (Defra). It was formed in 1990 to provide independent assurance that water supplies in England and Wales are safe and that drinking water quality is acceptable to consumers.
Issues with drinking water quality should be reported to water companies unless it is privately supplied. In those instances, problems should be reported to the environmental health department of the local council.
- Chemicals such as nitrates and pesticides.
- Metals such as lead and copper.
- The way water looks and how it tastes.
- Hydrogen Ion (pH).
- Trihalomethanes (THMs).
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