The Enforcement and Compliance Assurance Division for Region 9 of the United States Environmental Protection Agency (EPA) issues this Emergency Administrative Order (Order) to ATEC Water Systems, LLC (Respondent) pursuant to EPA's authority under Section 1431(a) of the Safe Drinking Water Act (SDWA), 42 U.S.C. Section 300i(a). The undersigned official has been properly delegated this authority.