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. EPA has primary enforcement responsibility for Section 1433 of the SDWA..