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HARDIN KOA CISTERN

Montana — Transient Non-Community — PWSID: MT0002008

System Information

PWSIDMT0002008
System NameHARDIN KOA CISTERN
System TypeTransient Non-Community
Water SourceSurface Water Purchased
Activity StatusActive
Owner TypePrivate
EPA Region08
Serves SchoolNo
WholesalerNo
First ReportedFeb 2, 1981
Last ReportedJan 5, 2026

Location & Contact

StateMontana
CityHARDIN
ZIP Code59034
AddressRR1 Box 100A
OrganizationMASTIN, KRISTY
Phone406-665-1635

Population & Service

Population Served100
Service Connections49

Drinking Water Violations (38)

This water system has 38 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 1, 2025 Oct 31, 2025 Revised Total Coliform Rule MON No Yes — — — Archived Oct 31, 2025 Revised Total Coliform Rule
Oct 1, 2025 Oct 31, 2025 Revised Total Coliform Rule MON No Yes — — — Archived Oct 31, 2025 Revised Total Coliform Rule
Oct 1, 2025 Oct 31, 2025 Revised Total Coliform Rule MON No Yes — — — Archived Oct 31, 2025 Revised Total Coliform Rule
Oct 1, 2025 Oct 31, 2025 Revised Total Coliform Rule MON No Yes — — — Archived Oct 31, 2025 Revised Total Coliform Rule
Sep 1, 2024 Sep 30, 2024 Revised Total Coliform Rule MON No Yes — — — Archived Sep 30, 2024 Revised Total Coliform Rule
Sep 1, 2024 Sep 30, 2024 Revised Total Coliform Rule MON No Yes — — — Archived Sep 30, 2024 Revised Total Coliform Rule
Sep 1, 2024 Sep 30, 2024 Revised Total Coliform Rule MON No Yes — — — Archived Sep 30, 2024 Revised Total Coliform Rule
Sep 1, 2024 Sep 30, 2024 Revised Total Coliform Rule MON No Yes — — — Archived Sep 30, 2024 Revised Total Coliform Rule
Jul 1, 2024 Jul 31, 2024 Revised Total Coliform Rule MON No Yes — — — Archived Jul 31, 2024 Revised Total Coliform Rule
Jul 1, 2024 Jul 31, 2024 Revised Total Coliform Rule MON No Yes — — — Archived Jul 31, 2024 Revised Total Coliform Rule
Jul 1, 2024 Jul 31, 2024 Revised Total Coliform Rule MON No Yes — — — Archived Jul 31, 2024 Revised Total Coliform Rule
Jul 1, 2024 Jul 31, 2024 Revised Total Coliform Rule MON No Yes — — — Archived Jul 31, 2024 Revised Total Coliform Rule
Feb 1, 2024 Feb 29, 2024 Revised Total Coliform Rule MON No Yes — — — Archived Feb 29, 2024 Revised Total Coliform Rule
Feb 1, 2024 Feb 29, 2024 Revised Total Coliform Rule MON No Yes — — — Archived Feb 29, 2024 Revised Total Coliform Rule
Feb 1, 2024 Feb 29, 2024 Revised Total Coliform Rule MON No Yes — — — Archived Feb 29, 2024 Revised Total Coliform Rule
Feb 1, 2024 Feb 29, 2024 Revised Total Coliform Rule MON No Yes — — — Archived Feb 29, 2024 Revised Total Coliform Rule
Feb 1, 2024 Feb 29, 2024 Revised Total Coliform Rule MON No Yes — — — Archived Feb 29, 2024 Revised Total Coliform Rule
Apr 1, 2017 Apr 30, 2017 Revised Total Coliform Rule MON No Yes — — — Resolved Apr 30, 2017 Revised Total Coliform Rule
Apr 1, 2017 Apr 30, 2017 Revised Total Coliform Rule MON No Yes — — — Resolved Apr 30, 2017 Revised Total Coliform Rule
Apr 1, 2017 Apr 30, 2017 Revised Total Coliform Rule MON No Yes — — — Resolved Apr 30, 2017 Revised Total Coliform Rule
Oct 1, 2006 Oct 31, 2006 Coliform (TCR) MR No No — 5% of samples — Resolved Oct 31, 2006 Total Coliform Rule
Oct 1, 2006 Oct 31, 2006 Coliform (TCR) MR No No — 5% of samples — Resolved Oct 31, 2006 Total Coliform Rule
Oct 1, 2006 Oct 31, 2006 Coliform (TCR) MR No No — 5% of samples — Resolved Oct 31, 2006 Total Coliform Rule
Oct 1, 2006 Oct 31, 2006 Coliform (TCR) MR No No — 5% of samples — Resolved Oct 31, 2006 Total Coliform Rule
Jul 1, 2006 Jul 31, 2006 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jul 31, 2006 Total Coliform Rule
Jul 1, 2006 Jul 31, 2006 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jul 31, 2006 Total Coliform Rule
Jul 1, 2006 Jul 31, 2006 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jul 31, 2006 Total Coliform Rule
Jul 1, 2006 Jul 31, 2006 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jul 31, 2006 Total Coliform Rule
Jul 1, 2006 Jul 31, 2006 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jul 31, 2006 Total Coliform Rule
Jun 1, 2006 Jun 30, 2006 Coliform (TCR) MR No No — 5% of samples — Resolved Jun 30, 2006 Total Coliform Rule
Jun 1, 2006 Jun 30, 2006 Coliform (TCR) MR No No — 5% of samples — Resolved Jun 30, 2006 Total Coliform Rule
Jun 1, 2006 Jun 30, 2006 Coliform (TCR) MR No No — 5% of samples — Resolved Jun 30, 2006 Total Coliform Rule
Jun 1, 2006 Jun 30, 2006 Coliform (TCR) MR No No — 5% of samples — Resolved Jun 30, 2006 Total Coliform Rule
Jun 1, 1994 Jun 30, 1994 Coliform (TCR) MR No No — 5% of samples — Resolved Jun 30, 1994 Total Coliform Rule
Jun 1, 1994 Jun 30, 1994 Coliform (TCR) MR No No — 5% of samples — Resolved Jun 30, 1994 Total Coliform Rule
Oct 1, 1982 Sep 30, 1983 Nitrate MR No Yes — 10 mg/L — Archived Sep 30, 1983 Nitrate Rule
Oct 1, 1981 Sep 30, 1982 Nitrate MR No Yes — 10 mg/L — Archived Sep 30, 1982 Nitrate Rule
Jan 1, 1981 Jan 31, 1981 Nitrate MR No Yes — 10 mg/L — Archived Jan 31, 1981 Nitrate Rule

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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