Per- and polyfluoroalkyl substances (PFAS) in UK drinking water
Summary of contents
PFAS are a class of substances with many useful properties for manufacturers and consumers, but these chemicals (and their degradation products) also have high persistence, are highly mobile, and can bioaccumulate in humans and wildlife.
The RSC has previously advocated for risk-based regulation of PFAS. Increasing concern about environmental persistence and toxicity of PFAS has spurred international regulators to impose stricter regulatory limits on the acceptable levels of PFAS in drinking water to limit human exposure and consequently prevent harm.
In the UK, we must urgently address PFAS water pollution to minimise the potential for negative health effects today and in future generations. By implementing stronger regulatory controls on PFAS in drinking water, the UK has an opportunity to show international leadership in managing chemicals in the environment and furthering the UN Sustainable Development Goals (SDGs), especially SDG6 on clean water.
We recommend using a Source-Pathway-Receptor model for considering PFAS risks, with action required across government, industry, and the water sector.