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SWLO AND MAIN OFFICE

Montana — Non-Transient Non-Community — PWSID: MT0003624

System Information

PWSIDMT0003624
System NameSWLO AND MAIN OFFICE
System TypeNon-Transient Non-Community
Water SourceGround Water
Activity StatusActive
Owner TypeState
EPA Region08
Serves SchoolNo
WholesalerNo
First ReportedOct 30, 1992
Last ReportedJan 5, 2026

Location & Contact

StateMontana
CityMISSOULA
ZIP Code59804
Address2705 SPURGIN ROAD
OrganizationGRAGG, KENNETH J
Phone406-542-4320

Population & Service

Population Served75
Service Connections2

Drinking Water Violations (365)

This water system has 365 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
Nov 1, 2024 Nov 30, 2024 Revised Total Coliform Rule MON No Yes — — — Resolved Nov 30, 2024 Revised Total Coliform Rule
Nov 1, 2024 Nov 30, 2024 Revised Total Coliform Rule MON No Yes — — — Resolved Nov 30, 2024 Revised Total Coliform Rule
Nov 1, 2024 Nov 30, 2024 Revised Total Coliform Rule MON No Yes — — — Resolved Nov 30, 2024 Revised Total Coliform Rule
Jan 1, 2024 Dec 31, 2024 Nitrate-Nitrite MR No Yes — — — Archived Dec 31, 2024 Nitrate Rule
Jan 1, 2024 Dec 31, 2024 Nitrate-Nitrite MR No Yes — — — Archived Dec 31, 2024 Nitrate Rule
Jan 1, 2023 Dec 31, 2025 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Unaddressed — Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2023 Dec 31, 2025 TTHM MR No Yes — 0.080 mg/L — Unaddressed — Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2023 Dec 31, 2025 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Unaddressed — Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2023 Dec 31, 2025 TTHM MR No Yes — 0.080 mg/L — Unaddressed — Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2022 Oct 31, 2022 Revised Total Coliform Rule MON No Yes — — — Resolved Oct 31, 2022 Revised Total Coliform Rule
Oct 1, 2022 Oct 31, 2022 Revised Total Coliform Rule MON No Yes — — — Resolved Oct 31, 2022 Revised Total Coliform Rule
Oct 1, 2022 Oct 31, 2022 Revised Total Coliform Rule MON No Yes — — — Resolved Oct 31, 2022 Revised Total Coliform Rule
Nov 1, 2020 Nov 30, 2020 Revised Total Coliform Rule MON No Yes — — — Resolved Nov 30, 2020 Revised Total Coliform Rule
Nov 1, 2020 Nov 30, 2020 Revised Total Coliform Rule MON No Yes — — — Resolved Nov 30, 2020 Revised Total Coliform Rule
Nov 1, 2020 Nov 30, 2020 Revised Total Coliform Rule MON No Yes — — — Resolved Nov 30, 2020 Revised Total Coliform Rule
Jan 1, 2020 Dec 31, 2022 Asbestos MR No Yes — 7 MFL — Resolved Dec 31, 2022 Inorganic Chemicals
Jan 1, 2020 Dec 31, 2020 Nitrate-Nitrite MR No Yes — — — Resolved Dec 31, 2020 Nitrate Rule
Jan 1, 2020 Dec 31, 2020 Nitrate-Nitrite MR No Yes — — — Resolved Dec 31, 2020 Nitrate Rule
Jan 1, 2020 Dec 31, 2020 Nitrate-Nitrite MR No Yes — — — Resolved Dec 31, 2020 Nitrate Rule
Jan 1, 2020 Dec 31, 2022 Asbestos MR No Yes — 7 MFL — Resolved Dec 31, 2022 Inorganic Chemicals
Jan 1, 2020 Dec 31, 2022 Asbestos MR No Yes — 7 MFL — Resolved Dec 31, 2022 Inorganic Chemicals
Feb 1, 2018 Feb 28, 2018 Revised Total Coliform Rule MON No Yes — — — Resolved Feb 28, 2018 Revised Total Coliform Rule
Feb 1, 2018 Feb 28, 2018 Revised Total Coliform Rule MON No Yes — — — Resolved Feb 28, 2018 Revised Total Coliform Rule
Feb 1, 2018 Feb 28, 2018 Revised Total Coliform Rule MON No Yes — — — Resolved Feb 28, 2018 Revised Total Coliform Rule
Jan 1, 2017 Dec 31, 2017 Nitrate-Nitrite MR No Yes — — — Resolved Dec 31, 2017 Nitrate Rule
Jan 1, 2017 Dec 31, 2017 Nitrate-Nitrite MR No Yes — — — Resolved Dec 31, 2017 Nitrate Rule
Jan 1, 2017 Dec 31, 2017 Nitrate-Nitrite MR No Yes — — — Resolved Dec 31, 2017 Nitrate Rule
Jan 1, 2014 — Lead and Copper Rule MR No No — TT — Resolved Feb 7, 2014 Lead and Copper Rule
Jan 1, 2014 — Lead and Copper Rule MR No No — TT — Resolved Feb 7, 2014 Lead and Copper Rule
Nov 1, 2013 Nov 30, 2013 Coliform (TCR) MR No No — 5% of samples — Resolved Nov 30, 2013 Total Coliform Rule
Nov 1, 2013 Nov 30, 2013 Coliform (TCR) MR No No — 5% of samples — Resolved Nov 30, 2013 Total Coliform Rule
Nov 1, 2013 Nov 30, 2013 Coliform (TCR) MR No No — 5% of samples — Resolved Nov 30, 2013 Total Coliform Rule
Aug 1, 2013 Aug 31, 2013 Coliform (TCR) MR No No — 5% of samples — Resolved Aug 31, 2013 Total Coliform Rule
Aug 1, 2013 Aug 31, 2013 Coliform (TCR) MR No No — 5% of samples — Resolved Aug 31, 2013 Total Coliform Rule
Aug 1, 2013 Aug 31, 2013 Coliform (TCR) MR No No — 5% of samples — Resolved Aug 31, 2013 Total Coliform Rule
Jan 1, 2012 Dec 31, 2012 Nitrate-Nitrite MR No Yes — — — Resolved Dec 31, 2012 Nitrate Rule
Jan 1, 2012 Dec 31, 2012 Nitrate-Nitrite MR No Yes — — — Resolved Dec 31, 2012 Nitrate Rule
Jan 1, 2012 Dec 31, 2012 Nitrate-Nitrite MR No Yes — — — Resolved Dec 31, 2012 Nitrate Rule
Jan 1, 2011 Dec 31, 2013 Dinoseb MR No Yes — 0.007 mg/L — Resolved Dec 24, 2013 Synthetic Organic Chemicals
Jan 1, 2011 Dec 31, 2013 Dalapon MR No Yes — 0.2 mg/L — Resolved Dec 24, 2013 Synthetic Organic Chemicals
Jan 1, 2011 Dec 31, 2013 Dinoseb MR No Yes — 0.007 mg/L — Resolved Dec 24, 2013 Synthetic Organic Chemicals
Jan 1, 2011 Dec 31, 2013 Pentachlorophenol MR No Yes — 0.001 mg/L — Resolved Dec 24, 2013 Synthetic Organic Chemicals
Jan 1, 2011 Dec 31, 2013 2,4,5-TP MR No Yes — 0.05 mg/L — Resolved Dec 24, 2013 Synthetic Organic Chemicals
Jan 1, 2011 Dec 31, 2013 2,4,5-TP MR No Yes — 0.05 mg/L — Resolved Dec 24, 2013 Synthetic Organic Chemicals
Jan 1, 2011 Dec 31, 2013 Dalapon MR No Yes — 0.2 mg/L — Resolved Dec 24, 2013 Synthetic Organic Chemicals
Jan 1, 2011 Dec 31, 2013 Pentachlorophenol MR No Yes — 0.001 mg/L — Resolved Dec 24, 2013 Synthetic Organic Chemicals
Jan 1, 2011 Dec 31, 2013 2,4-D MR No Yes — 0.07 mg/L — Resolved Dec 24, 2013 Synthetic Organic Chemicals
Jan 1, 2011 Dec 31, 2013 2,4-D MR No Yes — 0.07 mg/L — Resolved Dec 24, 2013 Synthetic Organic Chemicals
Jan 1, 2011 Dec 31, 2013 Dinoseb MR No Yes — 0.007 mg/L — Resolved Dec 24, 2013 Synthetic Organic Chemicals
Jan 1, 2011 Dec 31, 2013 Dalapon MR No Yes — 0.2 mg/L — Resolved Dec 24, 2013 Synthetic 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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