An Act amending the act of May 1, 1984 (P.L.206, No.43), known as the Pennsylvania Safe Drinking Water Act, providing for maximum contaminant levels.

HB 578 sets a new maximum contaminant level of 10 parts per trillion for specific PFAS chemicals (including PFOA and PFOS) in public drinking water systems across Pennsylvania. This directly affects municipal water providers and the residents who rely on tap water, requiring them to meet this stricter standard. The bill establishes this limit unless federal or state agencies set a higher standard, in which case those standards would take precedence. Water systems must comply with this level, and the Department of Environmental Protection must publish any federal/state standards in the Pennsylvania Bulletin. The law takes effect 60 days after enactment.