EPA published new sampling/analysis best-practices document to support PFAS NPDWR monitoring

EPA published a technical guidance document, “Requirements and Best Practices for the Collection and Analysis of Samples for the PFAS National Primary Drinking Water Regulation,” to support implementation of the PFAS National Primary Drinking Water Regulation (NPDWR). Compliance teams at public water systems, labs, and state primacy agencies should review sampling and analytical expectations described in the document to align monitoring programs and quality assurance practices with EPA’s recommended approaches.