Written Question·Department for Environment, Food and Rural Affairs·UIN 76393

Drinking Water: Safety

Tabled: 10 September 2025
Answered: 17 September 2025

Question

Mr Andrew Snowden

Conservative — Fylde

To ask the Secretary of State for Environment, Food and Rural Affairs, how frequently drinking water is tested for compliance with (a) microbiological and (b) chemical safety standards.

Answer

Emma Hardy
The sampling frequency for drinking water is set out in Schedule 3 of The Water Supply (Water Quality) Regulations 2016 including which parameters are sampled at which point in the system, with some variation depending on factors such as treatment chemica...
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