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SQUAW CREEK WATER DISTRICT

Wyoming — Community Water System — PWSID: WY5600737

System Information

PWSIDWY5600737
System NameSQUAW CREEK WATER DISTRICT
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypePrivate
EPA Region08
Serves SchoolNo
WholesalerNo
First ReportedMar 4, 1980
Last ReportedNov 17, 2025

Location & Contact

StateWyoming
CityWILSON
ZIP Code83014
AddressP.O. Box 775
OrganizationHANNER, EMILY
Phone307-690-5512

Population & Service

Population Served160
Service Connections67

Drinking Water Violations (190)

This water system has 190 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 2, 2024 — Consumer Confidence Rule Other No No — — — Resolved Oct 22, 2024 Consumer Confidence Rule
Oct 2, 2024 — Consumer Confidence Rule Other No No — — — Resolved Oct 22, 2024 Consumer Confidence Rule
Apr 1, 2024 Jun 30, 2024 Nitrate-Nitrite MR No Yes — — — Resolved Jun 30, 2024 Nitrate Rule
Dec 30, 2023 — Lead and Copper Rule MR No No — TT — Addressed — Lead and Copper Rule
Oct 1, 2023 — Lead and Copper Rule MR No No — TT — Resolved Dec 5, 2024 Lead and Copper Rule
Oct 1, 2023 — Lead and Copper Rule MR No No — TT — Resolved Dec 5, 2024 Lead and Copper Rule
May 15, 2023 — Groundwater Rule TT Yes No — — — Resolved Nov 8, 2024 Ground Water Rule
May 15, 2023 — Groundwater Rule TT Yes No — — — Resolved Nov 8, 2024 Ground Water Rule
Jan 1, 2023 Mar 31, 2023 Chlorine MR No No — 4.0 mg/L — Resolved Mar 31, 2023 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2023 Mar 31, 2023 Chlorine MR No No — 4.0 mg/L — Resolved Mar 31, 2023 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2018 Sep 30, 2018 TTHM MR No Yes — 0.080 mg/L — Resolved Sep 30, 2018 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2018 Sep 30, 2018 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Sep 30, 2018 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2018 Sep 30, 2018 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Sep 30, 2018 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2018 Sep 30, 2018 TTHM MR No Yes — 0.080 mg/L — Resolved Sep 30, 2018 Stage 2 Disinfectants and Disinfection Byproducts Rule
Nov 1, 2016 Nov 30, 2016 Revised Total Coliform Rule MON No Yes — — — Resolved Nov 30, 2016 Revised Total Coliform Rule
Aug 1, 2016 Aug 31, 2016 Revised Total Coliform Rule MON No Yes — — — Resolved Aug 31, 2016 Revised Total Coliform Rule
Jan 1, 2015 Dec 31, 2017 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Dec 31, 2017 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2015 Dec 31, 2017 TTHM MR No Yes — 0.080 mg/L — Resolved Dec 31, 2017 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2014 Dec 31, 2019 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Dec 31, 2019 Radionuclides and Revised Rad Rule
Jan 1, 2014 Dec 31, 2019 Radium-228 MR No Yes — — — Resolved Dec 31, 2019 Radionuclides and Revised Rad Rule
Jan 1, 2014 Dec 31, 2019 Combined Uranium MR No Yes — 30 ug/L — Resolved Dec 31, 2019 Radionuclides and Revised Rad Rule
Jan 1, 2014 Dec 31, 2019 Combined Uranium MR No Yes — 30 ug/L — Resolved Dec 31, 2019 Radionuclides and Revised Rad Rule
Jan 1, 2014 Dec 31, 2019 Gross Alpha, Excl. Radon and U MR No Yes — 15 pCi/L — Resolved Dec 31, 2019 Radionuclides and Revised Rad Rule
Jan 1, 2014 Dec 31, 2019 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Dec 31, 2019 Radionuclides and Revised Rad Rule
Jan 1, 2014 Dec 31, 2019 Radium-228 MR No Yes — — — Resolved Dec 31, 2019 Radionuclides and Revised Rad Rule
Jan 1, 2014 Dec 31, 2019 Gross Alpha, Excl. Radon and U MR No Yes — 15 pCi/L — Resolved Dec 31, 2019 Radionuclides and Revised Rad Rule
Jan 1, 2014 Dec 31, 2019 Radium-226 MR No Yes — — — Resolved Dec 31, 2019 Radionuclides and Revised Rad Rule
Jan 1, 2014 Dec 31, 2019 Radium-226 MR No Yes — — — Resolved Dec 31, 2019 Radionuclides and Revised Rad Rule
Dec 1, 2010 Dec 31, 2010 Coliform (TCR) MR No No — 5% of samples — Resolved Dec 31, 2010 Total Coliform Rule
Dec 1, 2010 Dec 31, 2010 Coliform (TCR) MR No No — 5% of samples — Resolved Dec 31, 2010 Total Coliform Rule
Nov 1, 2010 — E. COLI MR No Yes — — — Resolved Jul 27, 2017 Ground Water Rule
Nov 1, 2010 — E. COLI MR No Yes — — — Resolved Jul 27, 2017 Ground Water Rule
Jul 1, 2009 Sep 30, 2009 Chlorine MR No No — 4.0 mg/L — Resolved Sep 30, 2009 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2008 Dec 31, 2010 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Dec 31, 2010 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2008 Dec 31, 2010 TTHM MR No Yes — 0.080 mg/L — Resolved Dec 31, 2010 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2008 Dec 31, 2010 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Dec 31, 2010 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2008 Dec 31, 2010 TTHM MR No Yes — 0.080 mg/L — Resolved Dec 31, 2010 Stage 1 Disinfectants and Disinfection Byproducts Rule
Sep 1, 2004 Sep 30, 2004 Coliform (TCR) MR No No — 5% of samples — Archived Sep 30, 2004 Total Coliform Rule
Jan 1, 2002 Dec 31, 2002 Radium-226 MR No Yes — — — Resolved Dec 31, 2002 Radionuclides and Revised Rad Rule
Jan 1, 2002 Dec 31, 2002 Radium-226 MR No Yes — — — Resolved Dec 31, 2002 Radionuclides and Revised Rad Rule
Jan 1, 2002 Dec 31, 2002 Radium-228 MR No Yes — — — Resolved Dec 31, 2002 Radionuclides and Revised Rad Rule
Jan 1, 2002 Dec 31, 2002 Combined Uranium MR No Yes — 30 ug/L — Resolved Dec 31, 2002 Radionuclides and Revised Rad Rule
Jan 1, 2002 Dec 31, 2002 Combined Uranium MR No Yes — 30 ug/L — Resolved Dec 31, 2002 Radionuclides and Revised Rad Rule
Jan 1, 2002 Dec 31, 2002 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2002 Nitrate Rule
Jan 1, 2002 Dec 31, 2002 Gross Alpha, Excl. Radon and U MR No Yes — 15 pCi/L — Resolved Dec 31, 2002 Radionuclides and Revised Rad Rule
Jan 1, 2002 Dec 31, 2002 Gross Alpha, Excl. Radon and U MR No Yes — 15 pCi/L — Resolved Dec 31, 2002 Radionuclides and Revised Rad Rule
Jan 1, 2002 Dec 31, 2002 Radium-228 MR No Yes — — — Resolved Dec 31, 2002 Radionuclides and Revised Rad Rule
Jan 1, 2001 Dec 31, 2001 Ethylbenzene MR No Yes — 0.7 mg/L — Resolved Dec 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Dec 31, 2001 Ethylbenzene MR No Yes — 0.7 mg/L — Resolved Dec 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Dec 31, 2001 1,1,2-Trichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2001 Volatile 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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