To ask the Secretary of State for Environment, Food and Rural Affairs, whether he or his Department were informed by Cambridge Water of its intention to blend contaminated water with water from other sources before it reached households in June 2021.
21 February 2022
The Drinking Water Inspectorate (DWI) is the regulator for drinking water quality and carries out its regulatory functions independently of the Government. It holds water companies to account and takes action to ensure any failures are addressed.
Water companies are required to notify the DWI of any event that has affected or might affect the quality or sufficiency of the water supplied.
Cambridge Water notified the DWI of the high levels of PFOS on 8 February 2022. The DWI is currently investigating this case. Full details of the investigation cannot be shared at this stage as this might prejudice future legal proceedings. Once the investigation is concluded, the DWI will publish an Event Assessment Letter and share learning through the annual Chief Inspector’s Report, both of which will be publicly available on the DWI’s website.