Toxic 'Forever Chemicals' Threaten London's New Thames Bathing Spot

Published By DPRJ Universal | Published on Sunday, 22 March 2026

London's new official Thames bathing spot at Ham faces major concerns due to dangerous levels of toxic 'forever chemicals' (PFAS). Campaigners warn that Thames Water's plan to discharge treated sewage, which doesn't remove PFAS, will worsen water quality. Existing PFAS levels already exceed EU safety standards, posing health risks to swimmers and threatening wildlife. Environmental groups are calling for stricter regulations and bans to protect the river.

Plans for an official bathing spot on the River Thames at Ham, southwest London, are being met with significant alarm over existing and potential future water contamination. The primary concern revolves around dangerous levels of Perfluoroalkyl and Polyfluoroalkyl substances (PFAS), commonly known as 'forever chemicals,' which are linked to various health problems like infertility and cancer, and are toxic to the environment. Research indicates PFAS levels at the site are already 11 times higher than EU safety standards. Adding to these worries, Thames Water proposes a 'river abstraction' scheme. During droughts, it would abstract 75 million litres of river water daily, replacing it with treated sewage effluent from a nearby plant. While this treatment removes human waste, it fails to filter out PFAS. Campaigners, including Save Our Lands and River (SOLAR), contend this plan will exacerbate pollution, setting a dangerous precedent for rivers nationwide. They highlight the UK's lagging regulations compared to the EU regarding PFAS testing and bans. Despite Thames Water's assurance that the discharge will be downstream and meet Environment Agency standards, locals and environmentalists fear the long-term impact on the entire stretch of river used by swimmers and its thriving wildlife, calling for stricter government action to protect public health and the river's ecology.