Written Question·Department for Environment, Food and Rural Affairs·UIN 55509

Drinking Water: Per- and Polyfluorinated Alkyl Substances

Tabled: 30 May 2025
Answered: 9 June 2025

Question

Lisa Smart

Liberal DemocratHazel Grove

To ask the Secretary of State for Environment, Food and Rural Affairs, whether he will take steps to reduce limits for acceptable levels of (a) forever chemicals and (b) per- and polyfluoroalkyl substances in drinking water.

Answer

Emma Hardy
The Drinking Water Inspectorate (DWI) has provided guidance on PFAS to water companies since 2007. In 2021 a guideline value of 0.1 micrograms per litre (µg/L) was adopted for drinking water which, since August 2024 when DWI’s guidance was updated. Compan...

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