Amid mounting health and environmental concerns, MP Munira Wilson introduced a Bill in Parliament calling for strict guidance on poly- and perfluorinated alkyl substances (PFAS) in the UK’s drinking water supply. PFAS, also known as "forever chemicals" due to their persistence in the environment, have been linked to various health risks, including cancer, reduced fertility, and thyroid disease. Wilson’s Bill aims to address the lack of statutory regulation on PFAS in England and Wales, arguing that existing guidelines are insufficient to protect public health.
Rising Concerns Over PFAS in Water
PFAS compounds are prevalent in everyday items, from cookware to clothing, due to their water-, heat-, and stain-resistant properties. However, these synthetic chemicals, which persist in water and soil for decades, have made their way into drinking water, accumulating in human bodies over time. This buildup poses severe health risks, especially to children, who may experience lower birth weights and weakened immunity.
Wilson highlighted PFAS pollution in her own constituency, Twickenham, noting that the River Thames ranks among the UK’s most contaminated waters for PFAS. Studies have shown that water in her area contains PFAS levels exceeding EU safety standards by 11 times.
Lack of Legal Limits on PFAS
The UK currently has no enforceable PFAS limits in drinking water, relying instead on a "wholesome" water guideline that covers only a limited subset of PFAS compounds. In contrast, the EU and US have both implemented stringent PFAS regulations. As of January 2026, EU countries will enforce a cap of 0.5 micrograms per litre for combined PFAS levels in drinking water, while the US has restricted specific PFAS chemicals to 4 nanograms per litre.
The Health and Safety Executive recently identified PFAS as a potential consumer hazard, recommending legal measures. However, little regulatory progress has been made since the UK’s departure from the EU's REACH chemical regulation framework.
Water Companies and Public Trust
The Bill’s supporters argue that water companies, amidst controversies around pollution and high charges, cannot be relied upon to regulate PFAS voluntarily. Wilson emphasised that binding regulations are necessary to hold these companies accountable and ensure water safety for all citizens.
A Call for International Alignment
The Bill calls for UK alignment with international PFAS regulations to prevent the country from becoming a "dumping ground" for products containing banned PFAS. Wilson also urged the government to fulfil its manifesto promise to maintain EU-level environmental standards, highlighting Scotland’s continued adherence to EU guidelines as a model.
With widespread support from environmental and health organisations, the proposed Bill is scheduled for a second reading on 24 January 2025, marking a critical step in addressing the growing PFAS crisis.
