COWLEY, TOWN OF

Wyoming - Community Water System - PWSID: WY5600206

System Information

PWSIDWY5600206
System NameCOWLEY, TOWN OF
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeLocal
EPA Region08
Serves SchoolNo
WholesalerYes
First ReportedFeb 13, 1979
Last ReportedMar 2, 2026

Location & Contact

StateWyoming
CityCOWLEY
ZIP Code82420
AddressP.O. BOX 635 (20 South Division Street)
OrganizationBARNES, JOHN W.
Phone307-548-6799

Population & Service

Population Served800
Service Connections375

Drinking Water Violations (47)

This water system has 47 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
Sep 29, 2025 - MR No Yes - - - Unaddressed - -
Dec 30, 2024 - MR No No - TT - Resolved Mar 6, 2025 -
Dec 30, 2021 - MR No No - TT - Resolved Mar 9, 2022 -
Nov 2, 2019 - TT Yes No - - - Resolved Dec 10, 2020 -
Jan 22, 2017 - TT Yes No - - - Resolved Dec 10, 2020 -
Jan 22, 2017 - TT Yes No - - - Resolved Dec 10, 2020 -
Jan 1, 2006 Dec 31, 2006 MR No No - - - Resolved Dec 31, 2006 -
Jan 1, 1999 Dec 31, 1999 MR No Yes - 0.1 mg/L - Resolved Dec 31, 1999 -
Jan 1, 1999 Dec 31, 1999 MR No Yes - 0.005 mg/L - Resolved Dec 31, 1999 -
Jan 1, 1999 Dec 31, 1999 MR No Yes - 0.2 mg/L - Resolved Dec 31, 1999 -
Jan 1, 1999 Dec 31, 1999 MR No Yes - 0.007 mg/L - Resolved Dec 31, 1999 -
Jan 1, 1999 Dec 31, 1999 MR No Yes - 10 mg/L - Resolved Dec 31, 1999 -
Jan 1, 1999 Dec 31, 1999 MR No Yes - 0.005 mg/L - Resolved Dec 31, 1999 -
Jan 1, 1999 Dec 31, 1999 MR No Yes - 0.1 mg/L - Resolved Dec 31, 1999 -
Jan 1, 1999 Dec 31, 1999 MR No Yes - 0.005 mg/L - Resolved Dec 31, 1999 -
Jan 1, 1999 Dec 31, 1999 MR No Yes - 0.1 mg/L - Resolved Dec 31, 1999 -
Jan 1, 1999 Dec 31, 1999 MR No Yes - 0.6 mg/L - Resolved Dec 31, 1999 -
Jan 1, 1999 Dec 31, 1999 MR No Yes - 0.005 mg/L - Resolved Dec 31, 1999 -
Jan 1, 1999 Dec 31, 1999 MR No Yes - 0.005 mg/L - Resolved Dec 31, 1999 -
Jan 1, 1999 Dec 31, 1999 MR No Yes - 0.005 mg/L - Resolved Dec 31, 1999 -
Jan 1, 1999 Dec 31, 1999 MR No Yes - 0.07 mg/L - Resolved Dec 31, 1999 -
Jan 1, 1999 Dec 31, 1999 MR No Yes - 1 mg/L - Resolved Dec 31, 1999 -
Jan 1, 1999 Dec 31, 1999 MR No Yes - 0.005 mg/L - Resolved Dec 31, 1999 -
Jan 1, 1999 Dec 31, 1999 MR No Yes - 0.07 mg/L - Resolved Dec 31, 1999 -
Jan 1, 1999 Dec 31, 1999 MR No Yes - 0.002 mg/L - Resolved Dec 31, 1999 -
Jan 1, 1999 Dec 31, 1999 MR No Yes - 0.005 mg/L - Resolved Dec 31, 1999 -
Jan 1, 1999 Dec 31, 1999 MR No Yes - 0.7 mg/L - Resolved Dec 31, 1999 -
Jan 1, 1999 Dec 31, 1999 MR No Yes - 0.075 mg/L - Resolved Dec 31, 1999 -
Sep 1, 1994 Sep 30, 1994 MR No No - 5% of samples - Archived Sep 30, 1994 -
May 1, 1994 May 31, 1994 MR No No - 5% of samples - Archived May 31, 1994 -
Jan 1, 1993 Dec 31, 1993 MR No Yes - 10 mg/L - Archived Dec 31, 1993 -
Nov 1, 1992 Nov 30, 1992 MR No No - 5% of samples - Archived Nov 30, 1992 -
Aug 1, 1992 Aug 31, 1992 MCL Yes No - 5% of samples - Archived Aug 31, 1992 -
Aug 1, 1992 Aug 31, 1992 MCL Yes No - 5% of samples - Archived Aug 31, 1992 -
Sep 1, 1991 Sep 30, 1991 MR No No - 5% of samples - Archived Sep 30, 1991 -
Sep 1, 1991 Sep 30, 1991 MR No No - 5% of samples - Archived Sep 30, 1991 -
Apr 1, 1982 Mar 31, 1983 MR No Yes - 0.010 mg/L - Archived Mar 31, 1983 -
Apr 1, 1982 Mar 31, 1983 MR No Yes - 10 mg/L - Archived Mar 31, 1983 -
Apr 1, 1982 Mar 31, 1983 MR No Yes - 2 mg/L - Archived Mar 31, 1983 -
Apr 1, 1982 Mar 31, 1983 MR No Yes - 4.0 mg/L - Archived Mar 31, 1983 -
Apr 1, 1982 Mar 31, 1983 MR No Yes - 0.005 mg/L - Archived Mar 31, 1983 -
Apr 1, 1982 Mar 31, 1983 MR No Yes - 0.1 mg/L - Archived Mar 31, 1983 -
Apr 1, 1982 Mar 31, 1983 MR No Yes - 0.002 mg/L - Archived Mar 31, 1983 -
Apr 1, 1982 Mar 31, 1983 MR No Yes - 0.05 mg/L - Archived Mar 31, 1983 -
Jul 1, 1976 Jun 30, 1980 MR No No - 5 pCi/L - Archived Jun 30, 1980 -
Jul 1, 1976 Jun 30, 1980 MR No No - 15 pCi/L - Archived Jun 30, 1980 -
- - - No No - - - - - -

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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