The United States Environmental Protection Agency, Region 9 (EPA) and the San Carlos Apache Tribe (Respondent) enter into this Administrative Order on Consent (Consent Order) for the purpose of bringing the Upper Seven Mile Public Water System, located on the San Carlos Apache Indian Reservation, into compliance with the requirements of the Safe Drinking Water Act (SDWA), 42 U.S.C. Section 300f, and the National Primary Drinking Water Regulations (NPDWRs) at 40 C.F.R. Part 141.