LEWISTOWN CITY OF
Montana - Community Water System - PWSID: MT0000271
System Information
| PWSID | MT0000271 |
| System Name | LEWISTOWN CITY OF |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 08 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Feb 13, 1979 |
| Last Reported | Mar 26, 2026 |
Location & Contact
| State | Montana |
| City | LEWISTOWN |
| ZIP Code | 59457 |
| Address | 308 4TH AVE S |
| Organization | PHELPS, HOLLY. |
| Phone | 406-535-1770 |
Population & Service
| Population Served | 5,923 |
| Service Connections | 2,906 |
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 | - | Other | No | No | - | - | - | Resolved | Jul 17, 2025 | - | |
| Jul 1, 2025 | - | Other | No | No | - | - | - | Resolved | Jul 17, 2025 | - | |
| Nov 15, 2017 | - | MR | No | Yes | - | - | - | Resolved | Jan 2, 2018 | - | |
| Nov 15, 2017 | - | MR | No | Yes | - | - | - | Resolved | Jan 2, 2018 | - | |
| Nov 15, 2017 | - | MR | No | Yes | - | - | - | Resolved | Jan 2, 2018 | - | |
| Jul 1, 2017 | - | Other | No | No | - | - | - | Resolved | Aug 2, 2017 | - | |
| Jul 1, 2017 | - | Other | No | No | - | - | - | Resolved | Aug 2, 2017 | - | |
| Nov 23, 2016 | - | MR | No | Yes | - | - | - | Resolved | Nov 28, 2016 | - | |
| Nov 23, 2016 | - | MR | No | Yes | - | - | - | Resolved | Nov 28, 2016 | - | |
| Nov 23, 2016 | - | MR | No | Yes | - | - | - | Resolved | Nov 28, 2016 | - | |
| Mar 1, 2016 | Mar 31, 2016 | MCL | Yes | No | - | 5% of samples | - | Resolved | Mar 31, 2016 | - | |
| Mar 1, 2016 | Mar 31, 2016 | MCL | Yes | No | - | 5% of samples | - | Resolved | Mar 31, 2016 | - | |
| Mar 1, 2016 | Mar 31, 2016 | MCL | Yes | No | - | 5% of samples | - | Resolved | Mar 31, 2016 | - | |
| Mar 1, 2016 | Mar 31, 2016 | MCL | Yes | No | - | 5% of samples | - | Resolved | Mar 31, 2016 | - | |
| Mar 1, 2016 | Mar 31, 2016 | MCL | Yes | No | - | 5% of samples | - | Resolved | Mar 31, 2016 | - | |
| Mar 1, 2016 | Mar 31, 2016 | MCL | Yes | No | - | 5% of samples | - | Resolved | Mar 31, 2016 | - | |
| Dec 1, 2015 | Dec 31, 2015 | MCL | Yes | No | - | 5% of samples | - | Resolved | Dec 31, 2015 | - | |
| Dec 1, 2015 | Dec 31, 2015 | MCL | Yes | No | - | 5% of samples | - | Resolved | Dec 31, 2015 | - | |
| Dec 1, 2015 | Dec 31, 2015 | MCL | Yes | No | - | 5% of samples | - | Resolved | Dec 31, 2015 | - | |
| Dec 1, 2015 | Dec 31, 2015 | MCL | Yes | No | - | 5% of samples | - | Resolved | Dec 31, 2015 | - | |
| Dec 1, 2015 | Dec 31, 2015 | MCL | Yes | No | - | 5% of samples | - | Resolved | Dec 31, 2015 | - | |
| Dec 1, 2015 | Dec 31, 2015 | MCL | Yes | No | - | 5% of samples | - | Resolved | Dec 31, 2015 | - | |
| Oct 1, 2015 | Oct 31, 2015 | MCL | Yes | No | - | 5% of samples | - | Archived | Oct 31, 2015 | - | |
| Oct 1, 2015 | Oct 31, 2015 | MCL | Yes | No | - | 5% of samples | - | Archived | Oct 31, 2015 | - | |
| Oct 1, 2015 | Oct 31, 2015 | MCL | Yes | No | - | 5% of samples | - | Archived | Oct 31, 2015 | - | |
| Oct 1, 2015 | Oct 31, 2015 | MCL | Yes | No | - | 5% of samples | - | Archived | Oct 31, 2015 | - | |
| Oct 1, 2015 | Oct 31, 2015 | MCL | Yes | No | - | 5% of samples | - | Archived | Oct 31, 2015 | - | |
| Oct 1, 2015 | Oct 31, 2015 | MCL | Yes | No | - | 5% of samples | - | Archived | Oct 31, 2015 | - | |
| Sep 1, 2015 | Sep 30, 2015 | MCL | Yes | No | - | 5% of samples | - | Archived | Sep 30, 2015 | - | |
| Sep 1, 2015 | Sep 30, 2015 | MCL | Yes | No | - | 5% of samples | - | Archived | Sep 30, 2015 | - | |
| Sep 1, 2015 | Sep 30, 2015 | MCL | Yes | No | - | 5% of samples | - | Archived | Sep 30, 2015 | - | |
| Sep 1, 2015 | Sep 30, 2015 | MCL | Yes | No | - | 5% of samples | - | Archived | Sep 30, 2015 | - | |
| Sep 1, 2015 | Sep 30, 2015 | MCL | Yes | No | - | 5% of samples | - | Archived | Sep 30, 2015 | - | |
| Sep 1, 2015 | Sep 30, 2015 | MCL | Yes | No | - | 5% of samples | - | Archived | Sep 30, 2015 | - | |
| Jul 1, 2015 | - | Other | No | No | - | - | - | Resolved | Aug 11, 2015 | - | |
| Jul 1, 2015 | - | Other | No | No | - | - | - | Resolved | Aug 11, 2015 | - | |
| Nov 1, 2014 | Nov 30, 2014 | MCL | Yes | No | - | 5% of samples | - | Archived | Nov 30, 2014 | - | |
| Nov 1, 2014 | Nov 30, 2014 | MCL | Yes | No | - | 5% of samples | - | Archived | Nov 30, 2014 | - | |
| Nov 1, 2014 | Nov 30, 2014 | MCL | Yes | No | - | 5% of samples | - | Archived | Nov 30, 2014 | - | |
| Nov 1, 2014 | Nov 30, 2014 | MCL | Yes | No | - | 5% of samples | - | Archived | Nov 30, 2014 | - | |
| Nov 1, 2014 | Nov 30, 2014 | MCL | Yes | No | - | 5% of samples | - | Archived | Nov 30, 2014 | - | |
| Nov 1, 2014 | Nov 30, 2014 | MCL | Yes | No | - | 5% of samples | - | Archived | Nov 30, 2014 | - | |
| Oct 1, 2014 | Oct 31, 2014 | MCL | Yes | No | - | 5% of samples | - | Archived | Oct 31, 2014 | - | |
| Oct 1, 2014 | Oct 31, 2014 | MCL | Yes | No | - | 5% of samples | - | Archived | Oct 31, 2014 | - | |
| Oct 1, 2014 | Oct 31, 2014 | MCL | Yes | No | - | 5% of samples | - | Archived | Oct 31, 2014 | - | |
| Oct 1, 2014 | Oct 31, 2014 | MCL | Yes | No | - | 5% of samples | - | Archived | Oct 31, 2014 | - | |
| Oct 1, 2014 | Oct 31, 2014 | MCL | Yes | No | - | 5% of samples | - | Archived | Oct 31, 2014 | - | |
| Oct 1, 2014 | Oct 31, 2014 | MCL | Yes | No | - | 5% of samples | - | Archived | Oct 31, 2014 | - | |
| Sep 1, 2014 | Sep 30, 2014 | MCL | Yes | No | - | 5% of samples | - | Archived | Sep 30, 2014 | - | |
| Sep 1, 2014 | Sep 30, 2014 | MCL | Yes | No | - | 5% of samples | - | Archived | Sep 30, 2014 | - |
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.