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Drinking water standards

The quality of drinking water in England and Wales is the subject of legally enforceable standards.

In this section

Water quality regulations
Drinking water quality standard explained

Consumer guide

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Read Water UK's guide on how to look after the water in your home

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Thames Water is the UK’s largest water and sewerage company, serving 13 million customers
across London and the Thames Valley.

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Registered office: Thames Water Utilities Limited, Clearwater Court, Vastern Road, Reading, Berkshire RG1 8DB