Photo by National Cancer Institute on Unsplash
Measuring background exposure
The UK Health Security Agency (UKHSA) announced on 3 November that it is analysing blood and urine samples collected through the existing Health Survey for England to establish typical background levels of PFAS exposure across the UK population. The samples will also be tested for lead, arsenic, bisphenols, phthalates and flame retardants. UKHSA’s Dr Edward Wynne-Evans said there remain important evidence gaps around what different levels of exposure mean for an individual’s long-term health, and that any health effects are likely to be limited. The strongest international evidence relates to possible associations with raised cholesterol and potentially lower birth weight. The study follows a recently published UKHSA evidence review, while the independent Committee on Toxicity is carrying out its own detailed review.
A cautious message on testing
Toby Perkins MP, chair of the Environmental Audit Committee, welcomed the study, which follows the committee’s earlier call for long-term research, and said PFAS monitoring must improve public information without causing alarm. UKHSA stressed that the study is not a recommendation for individuals to seek PFAS blood tests, because there is currently insufficient evidence to determine what action should follow from a specific result. The government’s PFAS Action Plan sets out a precautionary approach, including restrictions on their use in certain products and applications.
Why it matters for water
PFAS are a growing regulatory and reputational concern for water companies, from drinking water monitoring to wastewater and river quality. Baseline exposure data could inform future standards and public expectations, and the 2027 findings will feed into the continuing debate over PFAS in treated effluent and recycled water schemes.
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