EPA issues this Order under the authority vested in the EPA Administrator by section 1414(g) of the SDWA, 42 U.S.C. Section 300g-3(g), which has been delegated to the Regional Administrator of EPA Region 9 and in turn has been delegated to the Director of EPA Region 9's Enforcement and Compliance Assurance Division. The Hawaii Department of Health (HDOH) administers the Public Water Supply Supervision Program in Hawaii pursuant to Section 1413 of the SDWA, 42 U.S.C. Section 300g-2. EPA, however, has primary enforcement responsibility for Section 1433 of the SDWA..