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Environment & Climate

Environment Agency data shows PFOS and PFOA fell in England's rivers

BBC News reports Environment Agency figures show PFOS and PFOA fell about 30% in English rivers over a decade, though total PFAS likely remain unchanged.

Published Nov 12, 2026 · 01:41 UTC1 reports

The short version

  • BBC News reports Environment Agency data show PFOS and PFOA concentrations in English rivers fell nearly a third over a decade.[BBC News]
  • The decline is attributed to stricter UK restrictions on the chemicals, and levels in freshwater fish fell 49%.[BBC News]
  • The agency says total PFAS in the environment likely remains unchanged because the compounds break down slowly and dilute into the sea.[BBC News]
  • Uncertainty remains about the toxicity of many PFAS, and the chemicals industry argues evidence of harm from other PFAS is limited.[BBC News]

Key facts

  • Environment Agency data show PFOS concentrations in English rivers fell 30% and PFOA concentrations fell 29% over the past decade.[BBC News]
  • Levels of the chemicals in freshwater fish have fallen 49%.[BBC News]
  • The decline in PFOS and PFOA has been attributed to stricter restrictions on their use after evidence emerged of harm to human health and the environment.[BBC News]
  • The Environment Agency report says total environmental quantities of the chemicals are likely unchanged because they break down slowly and have been diluted and washed into the sea.[BBC News]

What remains uncertain

  • The Environment Agency states that uncertainty remains regarding the toxicity of many PFAS.[BBC News]
  • The chemicals industry disputes that other PFAS are toxic and argues some have vital uses; this is an industry position, not an established finding.[BBC News]
  • The agency's finding that total environmental PFAS is likely unchanged is an estimate based on how slowly the compounds break down.[BBC News]

Sources

Outlet counts describe coverage, not independent confirmation. Reports may share a wire service or original source.