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SCUA Upper Seven Mile

Arizona — Community Water System — PWSID: 090400114

System Information

PWSID090400114
System NameSCUA Upper Seven Mile
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeNative American
EPA Region09
Serves SchoolNo
WholesalerNo
First ReportedFeb 2, 1984
Last ReportedDec 31, 2025

Location & Contact

StateArizona
CitySan Carlos
ZIP Code85550
AddressP.O. Box O
OrganizationSan Carlos Apache Tribe
Phone9284752631

Population & Service

Population Served8,478
Service Connections1,776

Drinking Water Violations (659)

This water system has 659 violations recorded in the EPA SDWIS database.

Begin Date End Date Contaminant Category Health-Based Major Measured Federal MCL State MCL Status Return to Compliance Rule
Jul 1, 2025 Sep 30, 2025 Chlorine MR No Yes — 4.0 mg/L — Archived Sep 30, 2025 Stage 1 Disinfectants and Disinfection Byproducts Rule
Nov 16, 2024 — LEAD AND COPPER RULE REVISIONS RPT No No — — — Unaddressed — Lead and Copper Rule Revisions
Nov 16, 2024 — LEAD AND COPPER RULE REVISIONS RPT No No — — — Unaddressed — Lead and Copper Rule Revisions
Jul 1, 2024 Sep 30, 2024 Chlorine MR No Yes — 4.0 mg/L — Resolved Sep 30, 2024 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2024 Jun 30, 2024 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Jun 30, 2024 Radionuclides and Revised Rad Rule
Apr 1, 2024 Jun 30, 2024 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 2024 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2024 Jun 30, 2024 Combined Uranium MR No Yes — 30 ug/L — Resolved Jun 30, 2024 Radionuclides and Revised Rad Rule
Apr 1, 2024 Jun 30, 2024 Gross Alpha, Excl. Radon and U MR No Yes — 15 pCi/L — Resolved Jun 30, 2024 Radionuclides and Revised Rad Rule
Mar 1, 2024 — Public Notice Other No No — — — Resolved Jun 10, 2025 Public Notice Rule and Revised PN Rule
Mar 1, 2024 Mar 31, 2024 Revised Total Coliform Rule MON No Yes — — — Resolved Mar 31, 2024 Revised Total Coliform Rule
Jan 1, 2024 Mar 31, 2024 cis-1,2-Dichloroethylene MR No Yes — 0.07 mg/L — Resolved Mar 31, 2024 Volatile Organic Chemicals
Jan 1, 2024 Mar 31, 2024 Xylenes, Total MR No Yes — 10 mg/L — Resolved Mar 31, 2024 Volatile Organic Chemicals
Jan 1, 2024 Mar 31, 2024 Pentachlorophenol MR No Yes — 0.001 mg/L — Resolved Mar 31, 2024 Synthetic Organic Chemicals
Jan 1, 2024 Mar 31, 2024 Total Polychlorinated Biphenyls (PCB) MR No Yes — 0.0005 mg/L — Resolved Mar 31, 2024 Synthetic Organic Chemicals
Jan 1, 2024 Mar 31, 2024 Heptachlor epoxide MR No Yes — 0.0002 mg/L — Resolved Mar 31, 2024 Synthetic Organic Chemicals
Jan 1, 2024 Mar 31, 2024 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Resolved Mar 31, 2024 Volatile Organic Chemicals
Jan 1, 2024 Mar 31, 2024 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Mar 31, 2024 Volatile Organic Chemicals
Jan 1, 2024 Mar 31, 2024 OXAMYL MR No Yes — 0.2 mg/L — Resolved Mar 31, 2024 Synthetic Organic Chemicals
Jan 1, 2024 Mar 31, 2024 Chlorine MR No Yes — 4.0 mg/L — Resolved Mar 31, 2024 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2024 — Public Notice Other No No — — — Resolved Jun 10, 2025 Public Notice Rule and Revised PN Rule
Jan 1, 2024 Mar 31, 2024 Di(2-ethylhexyl) adipate MR No Yes — 0.4 mg/L — Resolved Mar 31, 2024 Synthetic Organic Chemicals
Jan 1, 2024 Mar 31, 2024 LASSO MR No Yes — — — Resolved Mar 31, 2024 Synthetic Organic Chemicals
Jan 1, 2024 Mar 31, 2024 BHC-GAMMA MR No Yes — 0.0002 mg/L — Resolved Mar 31, 2024 Synthetic Organic Chemicals
Jan 1, 2024 Mar 31, 2024 Endothall MR No Yes — 0.1 mg/L — Resolved Mar 31, 2024 Synthetic Organic Chemicals
Jan 1, 2024 Mar 31, 2024 Diquat MR No Yes — 0.02 mg/L — Resolved Mar 31, 2024 Synthetic Organic Chemicals
Jan 1, 2024 Mar 31, 2024 Toxaphene MR No Yes — 0.003 mg/L — Resolved Mar 31, 2024 Synthetic Organic Chemicals
Jan 1, 2024 Mar 31, 2024 Simazine MR No Yes — 0.004 mg/L — Resolved Mar 31, 2024 Synthetic Organic Chemicals
Jan 1, 2024 Mar 31, 2024 Chlordane MR No Yes — 0.002 mg/L — Resolved Mar 31, 2024 Synthetic Organic Chemicals
Jan 1, 2024 Mar 31, 2024 1,2-Dichloropropane MR No Yes — 0.005 mg/L — Resolved Mar 31, 2024 Volatile Organic Chemicals
Jan 1, 2024 Mar 31, 2024 DICHLOROMETHANE MR No Yes — 0.005 mg/L — Resolved Mar 31, 2024 Volatile Organic Chemicals
Jan 1, 2024 Mar 31, 2024 Toluene MR No Yes — 1 mg/L — Resolved Mar 31, 2024 Volatile Organic Chemicals
Jan 1, 2024 Mar 31, 2024 1,1,2-Trichloroethane MR No Yes — 0.005 mg/L — Resolved Mar 31, 2024 Volatile Organic Chemicals
Jan 1, 2024 Mar 31, 2024 1,2-DIBROMO-3-CHLOROPROPANE MR No Yes — 0.0002 mg/L — Resolved Mar 31, 2024 Synthetic Organic Chemicals
Jan 1, 2024 Mar 31, 2024 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Mar 31, 2024 Volatile Organic Chemicals
Jan 1, 2024 Mar 31, 2024 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Mar 31, 2024 Volatile Organic Chemicals
Jan 1, 2024 Mar 31, 2024 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Mar 31, 2024 Volatile Organic Chemicals
Jan 1, 2024 Mar 31, 2024 Combined Uranium MR No Yes — 30 ug/L — Resolved Mar 31, 2024 Radionuclides and Revised Rad Rule
Jan 1, 2024 Mar 31, 2024 Styrene MR No Yes — 0.1 mg/L — Resolved Mar 31, 2024 Volatile Organic Chemicals
Jan 1, 2024 Mar 31, 2024 Trichloroethylene MR No Yes — 0.005 mg/L — Resolved Mar 31, 2024 Volatile Organic Chemicals
Jan 1, 2024 Mar 31, 2024 Heptachlor MR No Yes — 0.0004 mg/L — Resolved Mar 31, 2024 Synthetic Organic Chemicals
Jan 1, 2024 Mar 31, 2024 Gross Alpha, Excl. Radon and U MR No Yes — 15 pCi/L — Resolved Mar 31, 2024 Radionuclides and Revised Rad Rule
Jan 1, 2024 Mar 31, 2024 Carbofuran MR No Yes — 0.04 mg/L — Resolved Mar 31, 2024 Synthetic Organic Chemicals
Jan 1, 2024 Mar 31, 2024 2,4,5-TP MR No Yes — 0.05 mg/L — Resolved Mar 31, 2024 Synthetic Organic Chemicals
Jan 1, 2024 Mar 31, 2024 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Mar 31, 2024 Volatile Organic Chemicals
Jan 1, 2024 Mar 31, 2024 Di(2-ethylhexyl) phthalate MR No Yes — 0.006 mg/L — Resolved Mar 31, 2024 Synthetic Organic Chemicals
Jan 1, 2024 Mar 31, 2024 Atrazine MR No Yes — 0.003 mg/L — Resolved Mar 31, 2024 Synthetic Organic Chemicals
Jan 1, 2024 Mar 31, 2024 Benzo(a)pyrene MR No Yes — 0.0002 mg/L — Resolved Mar 31, 2024 Synthetic Organic Chemicals
Jan 1, 2024 Mar 31, 2024 ETHYLENE DIBROMIDE MR No Yes — 0.00005 mg/L — Resolved Mar 31, 2024 Synthetic Organic Chemicals
Jan 1, 2024 Mar 31, 2024 Glyphosate MR No Yes — 0.7 mg/L — Resolved Mar 31, 2024 Synthetic Organic Chemicals
Jan 1, 2024 Mar 31, 2024 HEXACHLOROBENZENE MR No Yes — 0.001 mg/L — Resolved Mar 31, 2024 Synthetic Organic Chemicals

About This Water System

Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.

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