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FORT BELKNAP AGENCY WATER SYSTEM

Montana — Community Water System — PWSID: 083090041

System Information

PWSID083090041
System NameFORT BELKNAP AGENCY WATER SYSTEM
System TypeCommunity Water System
Water SourceSurface Water
Activity StatusActive
Owner TypeNative American
EPA Region08
Serves SchoolNo
WholesalerNo
First ReportedMar 4, 1980
Last ReportedNov 17, 2025

Location & Contact

StateMontana
CityHARLEM
ZIP Code59526
Address164 Agency Main Street
OrganizationRAMONE, KASEY
Phone406-353-8313

Population & Service

Population Served2,100
Service Connections432

Drinking Water Violations (547)

This water system has 547 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 TTHM MCL Yes No .104 MG/L 0.080 mg/L .08 Archived Sep 30, 2025 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2025 Jun 30, 2025 TTHM MCL Yes No .101 MG/L 0.080 mg/L .08 Archived Jun 30, 2025 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2025 Jun 30, 2025 CARBON, TOTAL TT Yes No .68 RATIO TT — Archived Jun 30, 2025 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2025 Mar 31, 2025 DICHLOROMETHANE MR No Yes — 0.005 mg/L — Archived Mar 31, 2025 Volatile Organic Chemicals
Jan 1, 2025 Mar 31, 2025 DICHLOROMETHANE MR No Yes — 0.005 mg/L — Archived Mar 31, 2025 Volatile Organic Chemicals
Jan 1, 2025 Mar 31, 2025 CARBON, TOTAL TT Yes No .71 RATIO TT — Archived Mar 31, 2025 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2025 Mar 31, 2025 TTHM MCL Yes No .109 MG/L 0.080 mg/L .08 Archived Mar 31, 2025 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2025 Mar 31, 2025 CARBON, TOTAL TT Yes No .71 RATIO TT — Archived Mar 31, 2025 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2025 Mar 31, 2025 TTHM MCL Yes No .109 MG/L 0.080 mg/L .08 Archived Mar 31, 2025 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2024 Dec 31, 2024 TTHM MCL Yes No .115 MG/L 0.080 mg/L .08 Archived Dec 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2024 Dec 31, 2024 CARBON, TOTAL TT Yes No .72 RATIO TT — Archived Dec 31, 2024 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2024 Dec 31, 2024 CARBON, TOTAL TT Yes No .72 RATIO TT — Archived Dec 31, 2024 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2024 Sep 30, 2024 CARBON, TOTAL TT Yes No .81 RATIO TT — Archived Sep 30, 2024 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2024 Sep 30, 2024 CARBON, TOTAL TT Yes No .81 RATIO TT — Archived Sep 30, 2024 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2024 Sep 30, 2024 CARBON, TOTAL TT Yes No .81 RATIO TT — Archived Sep 30, 2024 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2024 Sep 30, 2024 TTHM MCL Yes No .114 MG/L 0.080 mg/L .08 Archived Sep 30, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2024 Sep 30, 2024 TTHM MCL Yes No .114 MG/L 0.080 mg/L .08 Archived Sep 30, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2024 Jun 30, 2024 TTHM MCL Yes No .107 MG/L 0.080 mg/L .08 Archived Jun 30, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2024 Jun 30, 2024 CARBON, TOTAL TT Yes No .89 RATIO TT — Archived Jun 30, 2024 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2024 Jun 30, 2024 TTHM MCL Yes No .107 MG/L 0.080 mg/L .08 Archived Jun 30, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2024 Jun 30, 2024 CARBON, TOTAL TT Yes No .89 RATIO TT 1 Archived Jun 30, 2024 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2024 Jun 30, 2024 CARBON, TOTAL TT Yes No .88 RATIO TT — Archived Jun 30, 2024 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2024 Mar 31, 2024 CARBON, TOTAL TT Yes No .98 RATIO TT — Archived Mar 31, 2024 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2024 Mar 31, 2024 CARBON, TOTAL TT Yes No .89 RATIO TT — Archived Mar 31, 2024 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2024 Mar 31, 2024 TTHM MCL Yes No .095 MG/L 0.080 mg/L .08 Archived Mar 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2024 Mar 31, 2024 TTHM MCL Yes No .095 MG/L 0.080 mg/L .08 Archived Mar 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2024 Mar 31, 2024 CARBON, TOTAL TT Yes No .91 RATIO TT — Archived Mar 31, 2024 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2023 Dec 31, 2023 TTHM MCL Yes No .085 MG/L 0.080 mg/L .08 Archived Dec 31, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2022 Sep 30, 2022 TTHM MCL Yes No .092 MG/L 0.080 mg/L .08 Resolved Sep 30, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2022 Sep 30, 2022 TTHM MCL Yes No .092 MG/L 0.080 mg/L .08 Resolved Sep 30, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2022 Jun 30, 2022 TTHM MCL Yes No .103 MG/L 0.080 mg/L .08 Resolved Jun 30, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2022 Jun 30, 2022 TTHM MCL Yes No .103 MG/L 0.080 mg/L .08 Resolved Jun 30, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2022 Jun 30, 2022 TTHM MCL Yes No .103 MG/L 0.080 mg/L .08 Resolved Jun 30, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2022 Jun 30, 2022 TTHM MCL Yes No .103 MG/L 0.080 mg/L .08 Resolved Jun 30, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2021 Dec 31, 2021 TTHM MCL Yes No .125 MG/L 0.080 mg/L .08 Resolved Dec 31, 2021 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2021 Dec 31, 2021 CARBON, TOTAL TT Yes No .94 RATIO TT 1 Resolved Dec 31, 2021 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2021 Dec 31, 2021 CARBON, TOTAL TT Yes No .99 RATIO TT 1 Resolved Dec 31, 2021 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2021 Dec 31, 2021 CARBON, TOTAL TT Yes No .94 RATIO TT 1 Resolved Dec 31, 2021 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2021 Dec 31, 2021 TTHM MCL Yes No .125 MG/L 0.080 mg/L .08 Resolved Dec 31, 2021 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2021 Dec 31, 2021 CARBON, TOTAL TT Yes No .99 RATIO TT 1 Resolved Dec 31, 2021 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2021 Dec 31, 2021 TTHM MCL Yes No .125 MG/L 0.080 mg/L .08 Resolved Dec 31, 2021 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2021 Sep 30, 2021 TTHM MCL Yes No .13 MG/L 0.080 mg/L .08 Resolved Sep 30, 2021 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2021 Sep 30, 2021 TTHM MCL Yes No .13 MG/L 0.080 mg/L .08 Resolved Sep 30, 2021 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2021 Sep 30, 2021 TTHM MCL Yes No .13 MG/L 0.080 mg/L .08 Resolved Sep 30, 2021 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2021 Jun 30, 2021 TTHM MCL Yes No .138 MG/L 0.080 mg/L .08 Resolved Jun 30, 2021 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2021 Jun 30, 2021 TTHM MCL Yes No .138 MG/L 0.080 mg/L .08 Resolved Jun 30, 2021 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2021 Mar 31, 2021 CARBON, TOTAL TT Yes No — TT — Resolved Mar 31, 2021 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2021 Mar 31, 2021 CARBON, TOTAL TT Yes No — TT — Resolved Mar 31, 2021 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2021 Mar 31, 2021 CARBON, TOTAL TT Yes No — TT — Resolved Mar 31, 2021 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2021 Mar 31, 2021 CARBON, TOTAL TT Yes No — TT — Resolved Mar 31, 2021 Stage 1 Disinfectants and Disinfection Byproducts 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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