London’s tap water has been found to contain high levels of PFAS, or “forever chemicals,” which have been linked to serious health risks, including cancer and liver damage. Testing of water samples from Harrow, Heathrow, and Battersea revealed contamination levels exceeding Sweden’s regulatory limits by 550%. The Royal Society of Chemistry (RSC) and experts from Bluewater, a water purification firm, are calling for stricter UK regulations, arguing that current thresholds are too lenient. They emphasize that filtration technology exists to remove PFAS, but stronger government action is needed to protect public health.