The battle against forever chemicals reaches Europe’s water supply

Across Europe, regulators are intensifying efforts to tackle PFAS, commonly known as “forever chemicals.” These synthetic compounds are used in thousands of industrial and consumer applications, including waterproof textiles, firefighting foams, and food packaging. Their nickname comes from their extreme persistence: the carbon-fluorine bond that defines PFAS is one of the strongest in organic chemistry, meaning these substances degrade very slowly in the environment and can accumulate in water, soil, wildlife, and the human body.

PFAS contamination has become a major European public health and environmental concern because growing scientific evidence links long-term exposure to immune system disruption, endocrine effects, fertility problems, liver damage, and certain cancers. In response, the European Union has begun integrating PFAS controls into its wider Zero Pollution Action Plan and drinking water legislation.

A central milestone is the recast EU Drinking Water Directive (Directive (EU) 2020/2184) [6], which introduced harmonised PFAS monitoring requirements across Member States. Since 12 January 2026, all EU countries must test drinking water for PFAS and comply with new parametric values [4].

The objective of this legislation is not merely to detect contamination, but to standardise monitoring, improve transparency, and drive remediation investment across Europe. Member States must report monitoring results to the European Commission, including exceedances and corrective actions. This creates a harmonised surveillance framework that should improve comparability of water-quality data across the Union [2].

Beyond drinking water, the EU is also advancing broader chemical restrictions under REACH (Registration, Evaluation, Authorisation and Restriction of Chemicals), with proposals to phase out many non-essential PFAS uses. However, critics argue the process remains slow and politically contested, warning that implementation delays risk undermining Europe’s ambitions. Environmental advocates have described recent PFAS roadmaps as incomplete, noting that broad restrictions are still under negotiation despite mounting contamination evidence [1].

The expected outcomes of Europe’s PFAS strategy include safer tap water, reduced chronic exposure for citizens, stronger incentives for industrial substitution, and expanded investment in advanced treatment technologies such as granular activated carbon, ion-exchange resins, and high-pressure membrane filtration. Analysts estimate that PFAS-related drinking water treatment investments across Europe could exceed €3.6 billion by 2036 [5].

Nevertheless, major challenges remain. PFAS encompass more than 10,000 substances, many of which are not yet fully characterised toxicologically. Detection and removal technologies are expensive, and utilities may face significant infrastructure costs. Furthermore, experts stress that water treatment alone cannot solve the issue: source control and upstream industrial regulation will be critical.

In short, Europe’s approach reflects a shift from reactive contamination management toward preventive chemical governance. While the new drinking water rules represent a landmark step, the effectiveness of the EU’s PFAS strategy will depend on whether monitoring evolves into faster, broader restrictions on the chemicals themselves.

References:

1. EURONEWS: A half-baked roadmap: what is missing from the EU and UK so called crackdown on forever chemicals (2026).
2. EUROPEAN COMMISSION - Environment: Drinking water.
3. EUROPEAN UNION – EUR-Lex: Drinking water – essential quality standards (2021).
4. EUROPEAN COMMISSION - Environment: New EU-wide protections against PFAS in drinking water come into effect (2026).
5. BLUEFIELD Research: New EU PFAS limits active €3.6 Billion drinking water treatment opportunity (2026).