On September 1, 2020, the U.S. Environmental Protection Agency (EPA) published the final regulation "Use of Lead Free Pipes, Fittings, Fixtures, Solder, and Flux for Drinking Water." In the final rule, EPA makes conforming changes to existing regulations based on the Reduction of Lead in Drinking Water Act (RLDWA) and the Community Fire Safety Act enacted by Congress. The final rule also requires that manufacturers or importers certify that their products meet the requirements using a consistent verification process within 3 years of the final rule publication date in the Federal Register. As a result, this new rule will reduce lead in drinking water and assure that states, manufacturers, inspectors and consumers have a common understanding of “Lead Free” plumbing.
https://www.epa.gov/sdwa/use-lead-free-pipes-fittings-fixtures-solder-and-flux-drinking-water