Toxic Pfas above proposed safety limits in almost all English waters tested

The Guardian

11-07-2025

Nearly all rivers, lakes and ponds in England tested for a range of Pfas, known as 'forever chemicals', exceed proposed new safety limits and 85% contain levels at least five times higher, analysis of official data reveals.
Out of 117 water bodies tested by the Environment Agency for multiple types of Pfas, 110 would fail the safety standard, according to analysis by Wildlife and Countryside Link and the Rivers Trust.
They also found levels of Pfos – a banned carcinogenic Pfas – in fish were on average 322 times higher than planned limits for wildlife. If just one portion of such freshwater fish was eaten each month this would exceed the safe threshold of Pfos for people to consume over a year, according to the NGOs.
Pfas, or per- and polyfluoroalkyl substances, are a group of thousands of human-made chemicals used in industrial processes and products such as non-stick pans, clothing and firefighting foams. They do not break down in the environment and some are linked to diseases, including cancers and hormone disruption.
Pfas pollution is widespread, prompting the EU to propose a new water quality standard that limits the combined toxicity of 24 Pfas to 4.4 nanograms per litre of water, calculated as PFOA-equivalents – a method that weights each substance according to its toxicity relative to PFOA, a particularly hazardous and well-studied carcinogen that is now banned.
The EU is also planning to regulate about 10,000 Pfas as one class as there are too many to assess on a case-by-case basis and because none break down in the environment, but the UK has no plans to follow suit.
Last week, environment groups, led by the Marine Conservation Society, wrote to ministers, urging a ban on all Pfas in consumer products and a timeline for phasing them out in all other uses. Now, public health and nature groups have joined forces to propose urgent measures to rein in pollution.
'Scientists continue to identify Pfas as one of the biggest threats of our time, yet the UK is falling behind other countries in restricting them,' said Hannah Evans of the environmental charity Fidra. 'Every day of inaction locks in decades of pollution and environmental harm … we're asking the UK government to turn off the tap of these persistent forever chemicals.'
They say the UK should align with the EU's group-based Pfas restrictions and ban the substances in food packaging, clothing, cosmetics, toys and firefighting foams, following examples from Denmark, France and the EU. They want better monitoring, tougher water and soil standards and to make polluters cover the cost of Pfas clean-up.
Emma Adler, the director of impact at Wildlife and Countryside Link, said: 'Pfas are linked to an explosion of impacts for wildlife and public health, from cancers to immune issues. These new figures underline just how widespread Pfas pollution is and that Pfas regulation must be a much clearer priority in government missions to clean up UK rivers and improve the nation's health.'
Thalie Martini, the chief executive officer at Breast Cancer UK, said: 'Evidence points to the potential for some Pfas to be related to health issues, including increasing breast cancer risk … millions of families affected by this disease will want the government to do everything they can to deliver tougher Pfas rules to protect our health.'
Last year, 59 Pfas experts urged the government to follow the science and regulate all Pfas as a single class, warning their extreme persistence – regardless of toxicity – posed a serious environmental threat.
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'Countries like France and Denmark, the EU as a whole and many US states have taken strong action against Pfas pollution,' said Dr Francesca Ginley from the Marine Conservation Society. 'The time is now for the UK to take a stand and show the leadership we need on Pfas pollution from source to sea.'
Dr Shubhi Sharma of the charity Chem Trust said: 'Too often with hazardous chemicals the world has ignored early warnings of harm and learned lessons far too late. Costs to tackle Pfas in the environment and address health impacts have a multi-billion pound economic price tag … the government must not delay.'
An Environment Agency spokesperson said the science on Pfas was moving quickly and that it was running a multi-year programme to improve understanding of Pfas pollution sources in England. They added: 'We are screening sites to identify potential sources of Pfas pollution and prioritise further investigations, whilst assessing how additional control measures could reduce the risks of Pfas in the environment.'
A spokesperson for the Department for Environment, Food and Rural Affairs said: 'The government is committed to protecting human health and the environment from the risks posed by Pfas. That's why we are working at pace together with regulators to assess levels of Pfas in the environment, their sources and potential risks to inform our approach to policy and regulation.'