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POLSON CITY OF

Montana — Community Water System — PWSID: MT0000308

System Information

PWSIDMT0000308
System NamePOLSON CITY OF
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeLocal
EPA Region08
Serves SchoolNo
WholesalerNo
First ReportedFeb 13, 1979
Last ReportedJan 5, 2026

Location & Contact

StateMontana
CityPOLSON
ZIP Code59860
Address106 1ST STREET EAST
OrganizationWALKER, ASHLEY R
Phone406-883-8215

Population & Service

Population Served5,300
Service Connections2,566

Drinking Water Violations (241)

This water system has 241 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 — Consumer Confidence Rule Other No No — — — Resolved Oct 6, 2025 Consumer Confidence Rule
Oct 1, 2025 — Consumer Confidence Rule Other No No — — — Resolved Oct 6, 2025 Consumer Confidence Rule
Jan 1, 2024 Dec 31, 2024 Nitrate-Nitrite MR No Yes — — — Resolved Dec 31, 2024 Nitrate Rule
Jan 1, 2024 Dec 31, 2024 Nitrate-Nitrite MR No Yes — — — Resolved Dec 31, 2024 Nitrate Rule
Jan 1, 2024 Dec 31, 2024 Nitrate-Nitrite MR No Yes — — — Resolved Dec 31, 2024 Nitrate Rule
Jul 1, 2008 — Consumer Confidence Rule Other No No — — — Resolved Aug 21, 2008 Consumer Confidence Rule
Jul 1, 2008 — Consumer Confidence Rule Other No No — — — Resolved Aug 21, 2008 Consumer Confidence Rule
Jul 1, 2008 — Consumer Confidence Rule Other No No — — — Resolved Aug 21, 2008 Consumer Confidence Rule
Sep 1, 2005 Sep 30, 2005 Coliform (TCR) MR No No — 5% of samples — Resolved Sep 30, 2005 Total Coliform Rule
Sep 1, 2005 Sep 30, 2005 Coliform (TCR) MR No No — 5% of samples — Resolved Sep 30, 2005 Total Coliform Rule
Sep 1, 2005 Sep 30, 2005 Coliform (TCR) MR No No — 5% of samples — Resolved Sep 30, 2005 Total Coliform Rule
Sep 1, 2005 Sep 30, 2005 Coliform (TCR) MR No No — 5% of samples — Resolved Sep 30, 2005 Total Coliform Rule
Sep 1, 2005 Sep 30, 2005 Coliform (TCR) MR No No — 5% of samples — Resolved Sep 30, 2005 Total Coliform Rule
Jan 1, 2005 Dec 31, 2005 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Dec 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2005 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Dec 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2005 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2005 cis-1,2-Dichloroethylene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2005 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2005 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Dec 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2005 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2005 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2005 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2005 Nitrate-Nitrite MR No Yes — — — Resolved Dec 31, 2005 Nitrate Rule
Jan 1, 2005 Dec 31, 2005 Nitrate-Nitrite MR No Yes — — — Resolved Dec 31, 2005 Nitrate Rule
Jan 1, 2005 Dec 31, 2005 Nitrate-Nitrite MR No Yes — — — Resolved Dec 31, 2005 Nitrate Rule
Jan 1, 2005 Dec 31, 2005 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2005 Trichloroethylene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2005 Ethylbenzene MR No Yes — 0.7 mg/L — Resolved Dec 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2005 Trichloroethylene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2005 cis-1,2-Dichloroethylene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2005 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Dec 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2005 Ethylbenzene MR No Yes — 0.7 mg/L — Resolved Dec 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2005 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Dec 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2005 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Dec 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2005 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2005 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2005 cis-1,2-Dichloroethylene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2005 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2005 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Dec 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2005 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Dec 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2005 1,2-Dichloropropane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2005 1,2-Dichloropropane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2005 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Dec 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2005 Ethylbenzene MR No Yes — 0.7 mg/L — Resolved Dec 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2005 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Dec 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2005 Trichloroethylene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2005 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Dec 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2005 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Dec 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2005 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Dec 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2005 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Dec 31, 2005 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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