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LEWISTOWN CITY OF

Montana — Community Water System — PWSID: MT0000271

System Information

PWSIDMT0000271
System NameLEWISTOWN 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
CityLEWISTOWN
ZIP Code59457
Address308 4TH AVE S
OrganizationPHELPS, HOLLY.
Phone406-535-1770

Population & Service

Population Served5,923
Service Connections2,906

Drinking Water Violations (512)

This water system has 512 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 — Consumer Confidence Rule Other No No — — — Resolved Jul 17, 2025 Consumer Confidence Rule
Jul 1, 2025 — Consumer Confidence Rule Other No No — — — Resolved Jul 17, 2025 Consumer Confidence Rule
Nov 15, 2017 — E. COLI MR No Yes — — — Resolved Jan 2, 2018 Ground Water Rule
Nov 15, 2017 — E. COLI MR No Yes — — — Resolved Jan 2, 2018 Ground Water Rule
Nov 15, 2017 — E. COLI MR No Yes — — — Resolved Jan 2, 2018 Ground Water Rule
Jul 1, 2017 — Consumer Confidence Rule Other No No — — — Resolved Aug 2, 2017 Consumer Confidence Rule
Jul 1, 2017 — Consumer Confidence Rule Other No No — — — Resolved Aug 2, 2017 Consumer Confidence Rule
Nov 23, 2016 — E. COLI MR No Yes — — — Resolved Nov 28, 2016 Ground Water Rule
Nov 23, 2016 — E. COLI MR No Yes — — — Resolved Nov 28, 2016 Ground Water Rule
Nov 23, 2016 — E. COLI MR No Yes — — — Resolved Nov 28, 2016 Ground Water Rule
Mar 1, 2016 Mar 31, 2016 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Mar 31, 2016 Total Coliform Rule
Mar 1, 2016 Mar 31, 2016 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Mar 31, 2016 Total Coliform Rule
Mar 1, 2016 Mar 31, 2016 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Mar 31, 2016 Total Coliform Rule
Mar 1, 2016 Mar 31, 2016 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Mar 31, 2016 Total Coliform Rule
Mar 1, 2016 Mar 31, 2016 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Mar 31, 2016 Total Coliform Rule
Mar 1, 2016 Mar 31, 2016 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Mar 31, 2016 Total Coliform Rule
Dec 1, 2015 Dec 31, 2015 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Dec 31, 2015 Total Coliform Rule
Dec 1, 2015 Dec 31, 2015 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Dec 31, 2015 Total Coliform Rule
Dec 1, 2015 Dec 31, 2015 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Dec 31, 2015 Total Coliform Rule
Dec 1, 2015 Dec 31, 2015 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Dec 31, 2015 Total Coliform Rule
Dec 1, 2015 Dec 31, 2015 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Dec 31, 2015 Total Coliform Rule
Dec 1, 2015 Dec 31, 2015 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Dec 31, 2015 Total Coliform Rule
Oct 1, 2015 Oct 31, 2015 Coliform (TCR) MCL Yes No — 5% of samples — Archived Oct 31, 2015 Total Coliform Rule
Oct 1, 2015 Oct 31, 2015 Coliform (TCR) MCL Yes No — 5% of samples — Archived Oct 31, 2015 Total Coliform Rule
Oct 1, 2015 Oct 31, 2015 Coliform (TCR) MCL Yes No — 5% of samples — Archived Oct 31, 2015 Total Coliform Rule
Oct 1, 2015 Oct 31, 2015 Coliform (TCR) MCL Yes No — 5% of samples — Archived Oct 31, 2015 Total Coliform Rule
Oct 1, 2015 Oct 31, 2015 Coliform (TCR) MCL Yes No — 5% of samples — Archived Oct 31, 2015 Total Coliform Rule
Oct 1, 2015 Oct 31, 2015 Coliform (TCR) MCL Yes No — 5% of samples — Archived Oct 31, 2015 Total Coliform Rule
Sep 1, 2015 Sep 30, 2015 Coliform (TCR) MCL Yes No — 5% of samples — Archived Sep 30, 2015 Total Coliform Rule
Sep 1, 2015 Sep 30, 2015 Coliform (TCR) MCL Yes No — 5% of samples — Archived Sep 30, 2015 Total Coliform Rule
Sep 1, 2015 Sep 30, 2015 Coliform (TCR) MCL Yes No — 5% of samples — Archived Sep 30, 2015 Total Coliform Rule
Sep 1, 2015 Sep 30, 2015 Coliform (TCR) MCL Yes No — 5% of samples — Archived Sep 30, 2015 Total Coliform Rule
Sep 1, 2015 Sep 30, 2015 Coliform (TCR) MCL Yes No — 5% of samples — Archived Sep 30, 2015 Total Coliform Rule
Sep 1, 2015 Sep 30, 2015 Coliform (TCR) MCL Yes No — 5% of samples — Archived Sep 30, 2015 Total Coliform Rule
Jul 1, 2015 — Consumer Confidence Rule Other No No — — — Resolved Aug 11, 2015 Consumer Confidence Rule
Jul 1, 2015 — Consumer Confidence Rule Other No No — — — Resolved Aug 11, 2015 Consumer Confidence Rule
Nov 1, 2014 Nov 30, 2014 Coliform (TCR) MCL Yes No — 5% of samples — Archived Nov 30, 2014 Total Coliform Rule
Nov 1, 2014 Nov 30, 2014 Coliform (TCR) MCL Yes No — 5% of samples — Archived Nov 30, 2014 Total Coliform Rule
Nov 1, 2014 Nov 30, 2014 Coliform (TCR) MCL Yes No — 5% of samples — Archived Nov 30, 2014 Total Coliform Rule
Nov 1, 2014 Nov 30, 2014 Coliform (TCR) MCL Yes No — 5% of samples — Archived Nov 30, 2014 Total Coliform Rule
Nov 1, 2014 Nov 30, 2014 Coliform (TCR) MCL Yes No — 5% of samples — Archived Nov 30, 2014 Total Coliform Rule
Nov 1, 2014 Nov 30, 2014 Coliform (TCR) MCL Yes No — 5% of samples — Archived Nov 30, 2014 Total Coliform Rule
Oct 1, 2014 Oct 31, 2014 Coliform (TCR) MCL Yes No — 5% of samples — Archived Oct 31, 2014 Total Coliform Rule
Oct 1, 2014 Oct 31, 2014 Coliform (TCR) MCL Yes No — 5% of samples — Archived Oct 31, 2014 Total Coliform Rule
Oct 1, 2014 Oct 31, 2014 Coliform (TCR) MCL Yes No — 5% of samples — Archived Oct 31, 2014 Total Coliform Rule
Oct 1, 2014 Oct 31, 2014 Coliform (TCR) MCL Yes No — 5% of samples — Archived Oct 31, 2014 Total Coliform Rule
Oct 1, 2014 Oct 31, 2014 Coliform (TCR) MCL Yes No — 5% of samples — Archived Oct 31, 2014 Total Coliform Rule
Oct 1, 2014 Oct 31, 2014 Coliform (TCR) MCL Yes No — 5% of samples — Archived Oct 31, 2014 Total Coliform Rule
Sep 1, 2014 Sep 30, 2014 Coliform (TCR) MCL Yes No — 5% of samples — Archived Sep 30, 2014 Total Coliform Rule
Sep 1, 2014 Sep 30, 2014 Coliform (TCR) MCL Yes No — 5% of samples — Archived Sep 30, 2014 Total Coliform 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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