GREAT FALLS CITY OF
Montana — Community Water System — PWSID: MT0000525
System Information
| PWSID | MT0000525 |
| System Name | GREAT FALLS CITY OF |
| System Type | Community Water System |
| Water Source | Surface Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 08 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Mar 5, 1980 |
| Last Reported | Mar 26, 2026 |
Location & Contact
| State | Montana |
| City | GREAT FALLS |
| ZIP Code | 59403 |
| Address | PO BOX 5021 |
| Organization | MCRADY, CODY |
| Phone | 406-727-1325 |
Population & Service
| Population Served | 60,000 |
| Service Connections | 22,477 |
Drinking Water Violations (26)
This water system has 26 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Apr 1, 2019 | Jun 30, 2019 | MCL | Yes | No | 61 UG/L | 0.060 mg/L | 60 | Resolved | Jun 30, 2019 | — | |
| Apr 1, 2019 | Jun 30, 2019 | MCL | Yes | No | 61 UG/L | 0.060 mg/L | 60 | Resolved | Jun 30, 2019 | — | |
| Apr 1, 2019 | Jun 30, 2019 | MCL | Yes | No | 61 UG/L | 0.060 mg/L | 60 | Resolved | Jun 30, 2019 | — | |
| Jan 1, 2019 | Mar 31, 2019 | MCL | Yes | No | 72.5 UG/L | 0.060 mg/L | 60 | Resolved | Mar 31, 2019 | — | |
| Jan 1, 2019 | Mar 31, 2019 | MCL | Yes | No | 72.5 UG/L | 0.060 mg/L | 60 | Resolved | Mar 31, 2019 | — | |
| Jan 1, 2019 | Mar 31, 2019 | MCL | Yes | No | 72.5 UG/L | 0.060 mg/L | 60 | Resolved | Mar 31, 2019 | — | |
| Oct 1, 2018 | Dec 31, 2018 | MCL | Yes | No | 74.8 UG/L | 0.060 mg/L | 60 | Resolved | Dec 31, 2018 | — | |
| Oct 1, 2018 | Dec 31, 2018 | MCL | Yes | No | 74.8 UG/L | 0.060 mg/L | 60 | Resolved | Dec 31, 2018 | — | |
| Oct 1, 2018 | Dec 31, 2018 | MCL | Yes | No | 74.8 UG/L | 0.060 mg/L | 60 | Resolved | Dec 31, 2018 | — | |
| Jul 1, 2018 | Sep 30, 2018 | MCL | Yes | No | 73.8 UG/L | 0.060 mg/L | 60 | Resolved | Sep 30, 2018 | — | |
| Jul 1, 2018 | Sep 30, 2018 | MCL | Yes | No | 73.8 UG/L | 0.060 mg/L | 60 | Resolved | Sep 30, 2018 | — | |
| Jul 1, 2018 | Sep 30, 2018 | MCL | Yes | No | 73.8 UG/L | 0.060 mg/L | 60 | Resolved | Sep 30, 2018 | — | |
| Apr 1, 2018 | Jun 30, 2018 | MCL | Yes | No | 60.5 UG/L | 0.060 mg/L | 60 | Resolved | Jun 30, 2018 | — | |
| Apr 1, 2018 | Jun 30, 2018 | MCL | Yes | No | 60.5 UG/L | 0.060 mg/L | 60 | Resolved | Jun 30, 2018 | — | |
| Apr 1, 2018 | Jun 30, 2018 | MCL | Yes | No | 60.5 UG/L | 0.060 mg/L | 60 | Resolved | Jun 30, 2018 | — | |
| Apr 1, 2018 | Jun 30, 2018 | MCL | Yes | No | 60.5 UG/L | 0.060 mg/L | 60 | Resolved | Jun 30, 2018 | — | |
| Oct 1, 2006 | Dec 31, 2006 | MR | No | No | — | 0.060 mg/L | — | Resolved | Dec 31, 2006 | — | |
| Oct 1, 2006 | Dec 31, 2006 | MR | No | No | — | 0.060 mg/L | — | Resolved | Dec 31, 2006 | — | |
| Oct 1, 2006 | Dec 31, 2006 | MR | No | No | — | 0.080 mg/L | — | Resolved | Dec 31, 2006 | — | |
| Oct 1, 2006 | Dec 31, 2006 | MR | No | No | — | 0.080 mg/L | — | Resolved | Dec 31, 2006 | — | |
| Oct 1, 2006 | Dec 31, 2006 | MR | No | No | — | 0.080 mg/L | — | Resolved | Dec 31, 2006 | — | |
| Oct 1, 2006 | Dec 31, 2006 | MR | No | No | — | 0.060 mg/L | — | Resolved | Dec 31, 2006 | — | |
| Jan 1, 2002 | Dec 31, 2010 | MR | No | Yes | — | 7 MFL | — | Archived | Dec 31, 2010 | — | |
| Aug 1, 1997 | Aug 31, 1997 | TT | Yes | No | — | — | — | Resolved | Aug 31, 1997 | — | |
| Aug 1, 1997 | Aug 31, 1997 | TT | Yes | No | — | — | — | Resolved | Aug 31, 1997 | — | |
| — | — | — | No | No | — | — | — | — | — | — |
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.