The historical pursuit of industrial convenience, ranging from non-stick polymers to aqueous film-forming foams (AFFF), has bequeathed a persistent regulatory challenge: Per- and polyfluoroalkyl substances (PFAS). 

Characterised by nearly indestructible carbon-fluorine bonds, these ‘forever chemicals’ have transitioned from industrial utilities to active, bioaccumulative contaminants within the UK food chain and hydrological cycles. 

PFAS represent a critical challenge to public health – and for environmental health practitioners (EHPs) – due to their high mobility and environmental persistence.  

A recent case in Lancashire highlighted this risk, where the Food Standards Agency (FSA), working with Wyre Council, issued urgent precautionary advice against consuming domestic eggs and home-grown produce near a legacy chemical facility after perfluorooctanoic acid (PFOA) levels were found to exceed safe weekly intake limits. 

This ‘silent’ contamination pathway is well documented in historical precedents, underscoring the need for proactive interventions. As early as the 1990s, one of the most notorious UK cases involved the use of PFAS-heavy firefighting foam at Jersey Airport. For years, these chemicals leached into the island’s groundwater, contaminating the boreholes and private water supplies of local residents, leading to a long-running legal and health battle.  

Contamination in Zwijndrecht, Belgium, by the chemical company 3M is a long-standing environmental crisis (soil and groundwater heavily polluted by PFAS) that spans over 50 years, from the start of factory operations in the 1970s to recent legal settlements in 2026. 3M reached an agreement with the Flemish government to pay €571 million for environmental remediation and compensation.  

In 2013, residents of Kallinge, Sweden, discovered their drinking water had been heavily contaminated by a nearby airbase. Blood tests showed some of the highest PFAS levels ever recorded in humans, leading to a landmark Supreme Court ruling in 2023 that recognised the contamination as a ‘personal injury’, allowing the affected residents to claim compensation. 

In response to these systemic risks, the regulatory environment is shifting rapidly. The European Union leads with a robust, legally binding framework, including Regulation (EU) 2023/915, which sets maximum levels for eggs, seafood, and meat. New regulations, the Packaging and Packaging Waste Regulation (PPWR), effective from August 2026, will prohibit food packaging containing PFAS above specific thresholds. 

The UK is currently in a state of transition. As of February 2026, the government launched its first national PFAS Plan: Building a safer future together, outlining a coordinated strategy to manage forever chemicals across food, water, and the environment. The UK PFAS Plan marks a pivot from advisory guidance to a statutory framework that is more active and intelligence-led. It focuses on three areas: 

• Food packaging testing: The government is specifically testing high-risk food-contact materials (FCMs) such as microwave popcorn bags, pizza boxes, and fast-food wrappers, to trace PFAS presence and inform future restrictions. 

• Expanded food monitoring: The FSA is developing and validating tests for 26 additional PFAS compounds across all food types, building on existing methods for fish, shellfish, meat, milk and eggs. 

• Dietary exposure research: A comprehensive review is underway to better understand human dietary exposure and its health consequences, including potential risks in bottled water. 

For EHPs, the most acute point of intervention lies with private water supplies. Lacking the sophisticated treatment infrastructure of major utilities, these supplies, particularly boreholes in rural or industrial fringes, are highly susceptible to PFAS accumulation. The 0.1 µg/L threshold serves as the definitive benchmark for triggering remedial action and safeguarding public health, especially as the UK moves toward closer EU alignment by December 2028. 

Effective risk management requires a granular understanding of PFAS behaviour in diverse geological and agricultural matrices. For a comprehensive technical foundation, the short course Now and Forever – A Beginner’s Guide to PFAS in Private Water Supplies is an essential resource for local authority practitioners tasked with safeguarding local private water supplies and public health.