OH HB365

Director of Environmental Protection must adopt rules establishing maximum contaminant levels (MCLs) in drinking water for per- and polyfluoroalkyl substances (PFAS), chromium-6, and 1,4-dioxane, with individual MCLs for combined total PFAS, perfluorooctanoic acid, and perfluorooctane sulfonic acid.

Director must consider MCLs from other states, peer-reviewed scientific studies, federal agency materials on toxic substances, and health advisories when establishing drinking water contaminant levels.

Director must ensure drinking water MCLs protect public health including pregnant women, nursing mothers, infants, and children, and are not less stringent than federal EPA standards.

Director must establish water quality standards for the same three contaminants (PFAS, chromium-6, and 1,4-dioxane) in Ohio's state waters using the same consideration factors and stringency requirements as for drinking water.

Director must conduct annual reviews of all established standards and adopt, amend, or rescind rules as necessary to account for the most recent peer-reviewed scientific studies.