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Netherlands Begins Rainwater PFAS Study After Report Links Pesticides to Widespread Contamination

Water utilities with provinces urge tighter national rules to limit diffuse PFAS pollution at its source.

Overview

  • Utrecht and research institute KWR have started a six‑month campaign with 14 rain gauges to test whether precipitation contributes to PFAS found in soil and groundwater, with first results expected in early 2026.
  • The CLM report commissioned by seven provinces and VEWIN found a sharp rise in PFAS‑containing pesticide use—up to 67% in three years—with 25 active PFAS pesticides incorporated into 116 products.
  • Monitoring showed PFAS exceedances in more than half of river‑water tests and about 10% of groundwater tests, while drinking water remains compliant due to increased treatment effort.
  • Usage is regionally concentrated, including roughly 1,000 kilograms of PFAS‑pesticides used annually in Utrecht and higher use in Noord‑Holland’s bulb and potato sectors.
  • Policy recommendations include better user disclosure, parcel‑level registration, expanded monitoring of PFAS and metabolites, and ending approval of PFAS co‑formulants, as VEWIN advocates for a national ban.