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ARAPAHOE COMM WATER SYSTEM

Wyoming — Community Water System — PWSID: 085690004

System Information

PWSID085690004
System NameARAPAHOE COMM WATER SYSTEM
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeNative American
EPA Region08
Serves SchoolNo
WholesalerNo
First ReportedMar 4, 1980
Last ReportedNov 17, 2025

Location & Contact

StateWyoming
CityETHETE
ZIP Code82520
Address392 Ethete Road
OrganizationLITTLE BEAR, HAROLD
Phone307-463-4560

Population & Service

Population Served3,100
Service Connections438

Drinking Water Violations (557)

This water system has 557 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
Oct 9, 2024 — E. COLI MR No Yes — — — Resolved Oct 16, 2024 Ground Water Rule
Apr 1, 2020 Apr 30, 2020 Revised Total Coliform Rule MON No Yes — — — Resolved Apr 30, 2020 Revised Total Coliform Rule
Jan 1, 2020 Dec 31, 2022 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Dec 31, 2022 Radionuclides and Revised Rad Rule
Jan 1, 2020 Dec 31, 2022 Radium-228 MR No Yes — — — Resolved Dec 31, 2022 Radionuclides and Revised Rad Rule
Jan 1, 2020 Dec 31, 2022 Combined Uranium MR No Yes — 30 ug/L — Resolved Dec 31, 2022 Radionuclides and Revised Rad Rule
Jan 1, 2020 Dec 31, 2022 Gross Alpha, Excl. Radon and U MR No Yes — 15 pCi/L — Resolved Dec 31, 2022 Radionuclides and Revised Rad Rule
Jan 1, 2020 Dec 31, 2022 Radium-226 MR No Yes — — — Resolved Dec 31, 2022 Radionuclides and Revised Rad Rule
Jan 1, 2019 Dec 31, 2019 Nitrate-Nitrite MR No Yes — — — Resolved Dec 9, 2019 Nitrate Rule
Jan 1, 2019 Dec 31, 2019 Nitrate-Nitrite MR No Yes — — — Resolved Dec 9, 2019 Nitrate Rule
Jan 1, 2019 Dec 31, 2019 Nitrate-Nitrite MR No Yes — — — Resolved Dec 9, 2019 Nitrate Rule
Sep 1, 2017 Aug 31, 2018 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Aug 31, 2018 Stage 2 Disinfectants and Disinfection Byproducts Rule
Sep 1, 2017 Aug 31, 2018 TTHM MR No Yes — 0.080 mg/L — Resolved Aug 31, 2018 Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 24, 2016 — Groundwater Rule TT Yes No — — — Resolved Sep 5, 2019 Ground Water Rule
Jan 1, 2013 Dec 31, 2013 Nitrate-Nitrite MR No Yes — — — Resolved Dec 31, 2013 Nitrate Rule
Jan 1, 2013 Dec 31, 2013 Nitrate-Nitrite MR No Yes — — — Resolved Dec 31, 2013 Nitrate Rule
Jan 1, 2011 Mar 31, 2011 Heptachlor epoxide MR No Yes — 0.0002 mg/L — Resolved Mar 31, 2011 Synthetic Organic Chemicals
Jan 1, 2011 Mar 31, 2011 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Mar 31, 2011 Volatile Organic Chemicals
Jan 1, 2011 Mar 31, 2011 cis-1,2-Dichloroethylene MR No Yes — 0.07 mg/L — Resolved Mar 31, 2011 Volatile Organic Chemicals
Jan 1, 2011 Mar 31, 2011 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Mar 31, 2011 Volatile Organic Chemicals
Jan 1, 2011 Mar 31, 2011 Chlordane MR No Yes — 0.002 mg/L — Resolved Mar 31, 2011 Synthetic Organic Chemicals
Jan 1, 2011 Mar 31, 2011 Xylenes, Total MR No Yes — 10 mg/L — Resolved Mar 31, 2011 Volatile Organic Chemicals
Jan 1, 2011 Mar 31, 2011 Diquat MR No Yes — 0.02 mg/L — Resolved Mar 31, 2011 Synthetic Organic Chemicals
Jan 1, 2011 Mar 31, 2011 BHC-GAMMA MR No Yes — 0.0002 mg/L — Resolved Mar 31, 2011 Synthetic Organic Chemicals
Jan 1, 2011 Mar 31, 2011 Picloram MR No Yes — 0.5 mg/L — Resolved Mar 31, 2011 Synthetic Organic Chemicals
Jan 1, 2011 Mar 31, 2011 Radium-228 MR No No — — — Resolved Mar 31, 2011 Radionuclides and Revised Rad Rule
Jan 1, 2011 Mar 31, 2011 Tetrachloroethylene MR No Yes — 0.005 mg/L — Resolved Mar 31, 2011 Volatile Organic Chemicals
Jan 1, 2011 Mar 31, 2011 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Mar 31, 2011 Volatile Organic Chemicals
Jan 1, 2011 Mar 31, 2011 2,4,5-TP MR No Yes — 0.05 mg/L — Resolved Mar 31, 2011 Synthetic Organic Chemicals
Jan 1, 2011 Mar 31, 2011 Radium-226 MR No No — — — Resolved Mar 31, 2011 Radionuclides and Revised Rad Rule
Jan 1, 2011 Mar 31, 2011 HEXACHLOROBENZENE MR No Yes — 0.001 mg/L — Resolved Mar 31, 2011 Synthetic Organic Chemicals
Jan 1, 2011 Mar 31, 2011 Dalapon MR No Yes — 0.2 mg/L — Resolved Mar 31, 2011 Synthetic Organic Chemicals
Jan 1, 2011 Mar 31, 2011 DICHLOROMETHANE MR No Yes — 0.005 mg/L — Resolved Mar 31, 2011 Volatile Organic Chemicals
Jan 1, 2011 Mar 31, 2011 Toluene MR No Yes — 1 mg/L — Resolved Mar 31, 2011 Volatile Organic Chemicals
Jan 1, 2011 Mar 31, 2011 Endothall MR No Yes — 0.1 mg/L — Resolved Mar 31, 2011 Synthetic Organic Chemicals
Jan 1, 2011 Mar 31, 2011 Glyphosate MR No Yes — 0.7 mg/L — Resolved Mar 31, 2011 Synthetic Organic Chemicals
Jan 1, 2011 Mar 31, 2011 Di(2-ethylhexyl) adipate MR No Yes — 0.4 mg/L — Resolved Mar 31, 2011 Synthetic Organic Chemicals
Jan 1, 2011 Mar 31, 2011 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Mar 31, 2011 Volatile Organic Chemicals
Jan 1, 2011 Mar 31, 2011 Heptachlor MR No Yes — 0.0004 mg/L — Resolved Mar 31, 2011 Synthetic Organic Chemicals
Jan 1, 2011 Mar 31, 2011 1,1-Dichloroethylene MR No Yes — 0.007 mg/L — Resolved Mar 31, 2011 Volatile Organic Chemicals
Jan 1, 2011 Mar 31, 2011 Ethylbenzene MR No Yes — 0.7 mg/L — Resolved Mar 31, 2011 Volatile Organic Chemicals
Jan 1, 2011 Mar 31, 2011 Di(2-ethylhexyl) phthalate MR No Yes — 0.006 mg/L — Resolved Mar 31, 2011 Synthetic Organic Chemicals
Jan 1, 2011 Mar 31, 2011 Atrazine MR No Yes — 0.003 mg/L — Resolved Mar 31, 2011 Synthetic Organic Chemicals
Jan 1, 2011 Mar 31, 2011 2,4-D MR No Yes — 0.07 mg/L — Resolved Mar 31, 2011 Synthetic Organic Chemicals
Jan 1, 2011 Mar 31, 2011 ETHYLENE DIBROMIDE MR No Yes — 0.00005 mg/L — Resolved Mar 31, 2011 Synthetic Organic Chemicals
Jan 1, 2011 Mar 31, 2011 Pentachlorophenol MR No Yes — 0.001 mg/L — Resolved Mar 31, 2011 Synthetic Organic Chemicals
Jan 1, 2011 Mar 31, 2011 Hexachlorocyclopentadiene MR No Yes — 0.05 mg/L — Resolved Mar 31, 2011 Synthetic Organic Chemicals
Jan 1, 2011 Mar 31, 2011 Simazine MR No Yes — 0.004 mg/L — Resolved Mar 31, 2011 Synthetic Organic Chemicals
Jan 1, 2011 Mar 31, 2011 Styrene MR No Yes — 0.1 mg/L — Resolved Mar 31, 2011 Volatile Organic Chemicals
Jan 1, 2011 Mar 31, 2011 Benzo(a)pyrene MR No Yes — 0.0002 mg/L — Resolved Mar 31, 2011 Synthetic Organic Chemicals
Jan 1, 2011 Mar 31, 2011 2,3,7,8-TCDD MR No Yes — 0.00000003 mg/L — Resolved Mar 31, 2011 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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