§8911 Monitoring and detection

Summary

The Administrator must add certain perfluoroalkyl and polyfluoroalkyl substances (PFAS) to the fifth published list of unregulated contaminants to be monitored. These are PFAS that the Administrator can measure in drinking water (a validated test exists) and that are not already covered by a national drinking-water rule. Adding these PFAS will not count toward the 30-contaminant cap on unregulated monitoring. Public water systems that serve more than 10,000 people must test for these PFAS. Systems serving between 3,300 and 10,000 people must test if money and lab capacity are available. Only a representative sample of systems serving fewer than 3,300 people must test, also subject to money and lab capacity. The Administrator can waive the smaller-system testing if labs cannot handle it. The government will pay reasonable testing costs for the 3,300–10,000 and smaller systems using money made available under subsection (a)(2)(H) or subsection (j)(5) of section 300j–4 of title 42, or other money provided for that purpose.