Levels of two ‘forever chemicals’, PFOS and PFOA, in English rivers and fish have fallen significantly over the past decade, according to a report from the Environment Agency (EA).
These chemicals are used in a range of products and industrial processes. They are known as ‘forever chemicals’ because many break down very slowly and can build up in the environment over time.
The EA’s report found that between 2016 and 2025, levels of PFOS in rivers fell by around 30% and PFOA by 29%. Meanwhile, PFOS concentration in freshwater fish declined by about 49%.
According to the EA, the reductions are thanks to regulatory action by the government, such as controls and restrictions on the chemicals.
Environment Minister Emma Hardy said: “We are acting to crack down on forever chemicals through tougher rules on their use, updated guidance, widespread monitoring, and support for safer alternatives.
“I welcome the findings of this report, and this government is determined to reduce exposure to these chemicals for the public and the environment.”
Despite the huge drops in PFOS and PFOA, the report found the presence of PFAS continues to be widespread.
The EA says it will continue to expand its evidence on the chemical and similar substances through research into airborne monitoring , water thresholds and potential replacements.
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