Data on 29 PFAS and lithium required for monitoring under UCMR 5 will be published quarterly until completion of data reportin gin 2026.
Drinking Water
UCMR 5 (2023-2025) Occurrence Data
EPA Proposed PFAS National Primary Drinking Water Regulation
This webpage provides a link to the proposed regulation of six PFAS in drinking water, as well as fact sheets, FAQs, and other supporting documents.
ASDWA PFAS Laboratory Testing Primer for State Drinking Water Programs and Public Water Systems
Provides guidance on how state drinking water programs can work with labs to test PFAS in drinkingw ater samples collected from public water systems
