New Stricter PFOS Controls Adopted
On 27 June 2025, the European Commission published Delegated Regulation (EU) 2025/718, amending the Persistent Organic Pollutants (POPs) Regulation (EU) 2019/1021 to tighten restrictions on perfluorooctane sulfonic acid (PFOS), its salts, and related compounds. The revision aims to bolster environmental protection and public health across the EU.
Key Changes in PFOS Limits
• Lower contaminant thresholds:
PFOS and its salts now have a maximum allowable concentration of 0.025 mg/kg, while combined PFOS-related compounds are limited to 1 mg/kg.
• Harmonization:
These limits align PFOS controls with those already set for perfluorooctanoic acid (PFOA), creating consistent regulation for PFAS substances.
Expanded PFOS Definition
The regulation broadens the scope to include PFOS-related compounds with the molecular structure C₈F₁₇SO₂X, where X covers hydroxyl groups, salts, halides, amides, and certain polymers. This closes gaps in the chemical coverage and strengthens regulatory reach.
Phasing Out of Exemptions
The longstanding exemption allowing PFOS use as a mist suppressant in hard chromium (VI) plating has been removed, reflecting the availability of safer alternatives.
Implementation Timeline
• Entry into force: 20 days after publication (mid-July 2025)
• Enforceable limits: From 3 December 2025, the new unintentional trace contaminant (UTC) limits apply legally
This schedule provides industry with time to adjust compliance measures.
Industry Impact and Recommendations
Affected sectors include textiles, firefighting foams, coatings, metal plating, and electronics. Companies should:
• Review and update chemical inventories
• Communicate closely with suppliers about PFOS content
• Conduct testing for trace PFOS and related substances
• Identify and transition to safer alternatives
Broader Regulatory Context
This update supports the EU’s commitments under the Stockholm Convention on Persistent Organic Pollutants and aligns with its wider PFAS phase-out strategy targeting persistent and harmful substances.
With the tightened PFOS thresholds and expanded substance coverage, the EU signals a firm regulatory stance on PFAS risks. Affected businesses must act swiftly to ensure compliance by December 2025, safeguarding environmental and public health.
Reference: Delegated Regulation (EU) 2025/718 - EUR-Lex
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