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PLAINS TOWN OF

Montana — Community Water System — PWSID: MT0000305

System Information

PWSIDMT0000305
System NamePLAINS TOWN 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
CityPLAINS
ZIP Code59859
AddressPO BOX 567
OrganizationEMMETT, CATHY
Phone406-826-3411

Population & Service

Population Served1,700
Service Connections649

Drinking Water Violations (373)

This water system has 373 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
Jan 1, 2025 Dec 31, 2025 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Unaddressed — Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2025 Dec 31, 2025 TTHM MR No Yes — 0.080 mg/L — Unaddressed — Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2025 Dec 31, 2025 TTHM MR No Yes — 0.080 mg/L — Unaddressed — Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2025 Dec 31, 2025 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Unaddressed — Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2006 Apr 30, 2006 Coliform (TCR) MR No No — 5% of samples — Resolved Apr 30, 2006 Total Coliform Rule
Apr 1, 2006 Apr 30, 2006 Coliform (TCR) MR No No — 5% of samples — Resolved Apr 30, 2006 Total Coliform Rule
Apr 1, 2006 Apr 30, 2006 Coliform (TCR) MR No No — 5% of samples — Resolved Apr 30, 2006 Total Coliform Rule
Nov 1, 2005 Nov 30, 2005 Coliform (TCR) MR No No — 5% of samples — Resolved Nov 30, 2005 Total Coliform Rule
Nov 1, 2005 Nov 30, 2005 Coliform (TCR) MR No No — 5% of samples — Resolved Nov 30, 2005 Total Coliform Rule
Nov 1, 2005 Nov 30, 2005 Coliform (TCR) MR No No — 5% of samples — Resolved Nov 30, 2005 Total Coliform Rule
Jan 1, 2001 Dec 31, 2001 Nitrate-Nitrite MR No Yes — — — Resolved Dec 31, 2001 Nitrate Rule
Jan 1, 2001 Dec 31, 2001 Nitrate-Nitrite MR No Yes — — — Resolved Dec 31, 2001 Nitrate Rule
Jan 1, 2001 Dec 31, 2001 Nitrate-Nitrite MR No Yes — — — Resolved Dec 31, 2001 Nitrate Rule
Jan 1, 2001 Dec 31, 2001 Nitrate-Nitrite MR No Yes — — — Resolved Dec 31, 2001 Nitrate Rule
Jan 1, 2001 Dec 31, 2001 Nitrate-Nitrite MR No Yes — — — Resolved Dec 31, 2001 Nitrate Rule
Jan 1, 2001 Dec 31, 2001 Nitrate-Nitrite MR No Yes — — — Resolved Dec 31, 2001 Nitrate Rule
Jan 1, 1999 Dec 31, 2001 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Dec 31, 2001 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 2001 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Dec 31, 2001 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 2001 Di(2-ethylhexyl) adipate MR No Yes — 0.4 mg/L — Resolved Dec 31, 2001 Synthetic Organic Chemicals
Jan 1, 1999 Dec 31, 2001 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Dec 31, 2001 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 2001 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Dec 31, 2001 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 2001 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Dec 31, 2001 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 2001 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2001 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 2001 1,1-Dichloroethylene MR No Yes — 0.007 mg/L — Resolved Dec 31, 2001 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 2001 1,1-Dichloroethylene MR No Yes — 0.007 mg/L — Resolved Dec 31, 2001 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 2001 1,1-Dichloroethylene MR No Yes — 0.007 mg/L — Resolved Dec 31, 2001 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 2001 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2001 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 2001 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2001 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 2001 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2001 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 2001 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Dec 31, 2001 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 2001 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2001 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 2001 1,1,2-Trichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2001 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 2001 cis-1,2-Dichloroethylene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2001 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 2001 cis-1,2-Dichloroethylene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2001 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 2001 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Dec 31, 2001 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 2001 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Dec 31, 2001 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 2001 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Dec 31, 2001 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 2001 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Dec 31, 2001 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 2001 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Dec 31, 2001 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 2001 Trichloroethylene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2001 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 2001 Trichloroethylene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2001 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 2001 Xylenes, Total MR No Yes — 10 mg/L — Resolved Dec 31, 2001 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 2001 1,1,2-Trichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2001 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 2001 1,1,2-Trichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2001 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 2001 Benzene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2001 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 2001 Benzene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2001 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 2001 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2001 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 2001 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2001 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 2001 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2001 Volatile Organic Chemicals
Jan 1, 1999 Dec 31, 2001 Xylenes, Total MR No Yes — 10 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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