POTOMAC SCHOOL DIST 11
Montana — Non-Transient Non-Community — PWSID: MT0000855
System Information
| PWSID | MT0000855 |
| System Name | POTOMAC SCHOOL DIST 11 |
| System Type | Non-Transient Non-Community |
| Water Source | Ground 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 | BONNER |
| ZIP Code | 59803 |
| Address | 29750 PATOMAC RD |
| Organization | SALLEE, EMILY |
| Phone | 406-044-5581 |
Population & Service
| Population Served | 160 |
| Service Connections | 4 |
Drinking Water Violations (141)
This water system has 141 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Sep 1, 2023 | Sep 30, 2023 | MON | No | Yes | — | — | — | Resolved | Sep 30, 2023 | — | |
| Sep 1, 2023 | Sep 30, 2023 | MON | No | Yes | — | — | — | Resolved | Sep 30, 2023 | — | |
| Sep 1, 2023 | Sep 30, 2023 | MON | No | Yes | — | — | — | Resolved | Sep 30, 2023 | — | |
| Sep 1, 2017 | Sep 30, 2017 | MON | No | Yes | — | — | — | Resolved | Sep 30, 2017 | — | |
| Sep 1, 2017 | Sep 30, 2017 | MON | No | Yes | — | — | — | Resolved | Sep 30, 2017 | — | |
| Sep 1, 2017 | Sep 30, 2017 | MON | No | Yes | — | — | — | Resolved | Sep 30, 2017 | — | |
| Jul 1, 2017 | Jul 31, 2017 | MON | No | Yes | — | — | — | Resolved | Jul 31, 2017 | — | |
| Jul 1, 2017 | Jul 31, 2017 | MON | No | Yes | — | — | — | Resolved | Jul 31, 2017 | — | |
| Jul 1, 2017 | Jul 31, 2017 | MON | No | Yes | — | — | — | Resolved | Jul 31, 2017 | — | |
| May 1, 2015 | May 31, 2015 | MR | No | No | — | 5% of samples | — | Resolved | May 31, 2015 | — | |
| May 1, 2015 | May 31, 2015 | MR | No | No | — | 5% of samples | — | Resolved | May 31, 2015 | — | |
| May 1, 2015 | May 31, 2015 | MR | No | No | — | 5% of samples | — | Resolved | May 31, 2015 | — | |
| Oct 1, 2013 | Dec 31, 2013 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Feb 25, 2013 | — | |
| Oct 1, 2013 | Dec 31, 2013 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Feb 25, 2013 | — | |
| Oct 1, 2013 | Dec 31, 2013 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2013 | — | |
| Oct 1, 2013 | Dec 31, 2013 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2013 | — | |
| Oct 1, 2013 | Dec 31, 2013 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2013 | — | |
| Oct 1, 2013 | Dec 31, 2013 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2013 | — | |
| Oct 1, 2013 | Dec 31, 2013 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Feb 25, 2013 | — | |
| Oct 1, 2013 | Dec 31, 2013 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2013 | — | |
| Oct 1, 2013 | Dec 31, 2013 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2013 | — | |
| Jul 1, 2013 | Sep 30, 2013 | MCL | Yes | No | .015 MG/L | 0.010 mg/L | — | Resolved | Sep 30, 2013 | — | |
| Jul 1, 2013 | Sep 30, 2013 | MCL | Yes | No | .015 MG/L | 0.010 mg/L | — | Resolved | Sep 30, 2013 | — | |
| Jul 1, 2013 | Sep 30, 2013 | MCL | Yes | No | .015 MG/L | 0.010 mg/L | — | Resolved | Sep 30, 2013 | — | |
| Jan 1, 2013 | Mar 31, 2013 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Mar 31, 2013 | — | |
| Jan 1, 2013 | Mar 31, 2013 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Mar 31, 2013 | — | |
| Jan 1, 2013 | Mar 31, 2013 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Mar 31, 2013 | — | |
| Jul 1, 2012 | Sep 30, 2012 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Sep 30, 2012 | — | |
| Jul 1, 2012 | Sep 30, 2012 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Sep 30, 2012 | — | |
| Jul 1, 2012 | Sep 30, 2012 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Sep 30, 2012 | — | |
| May 1, 2012 | May 31, 2012 | MR | No | No | — | 5% of samples | — | Resolved | May 31, 2012 | — | |
| May 1, 2012 | May 31, 2012 | MR | No | No | — | 5% of samples | — | Resolved | May 31, 2012 | — | |
| May 1, 2012 | May 31, 2012 | MR | No | No | — | 5% of samples | — | Resolved | May 31, 2012 | — | |
| Apr 1, 2012 | Jun 30, 2012 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Jun 30, 2012 | — | |
| Apr 1, 2012 | Jun 30, 2012 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Jun 30, 2012 | — | |
| Apr 1, 2012 | Jun 30, 2012 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Jun 30, 2012 | — | |
| Jan 1, 2012 | Dec 31, 2012 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2012 | — | |
| Jan 1, 2012 | Dec 31, 2012 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2012 | — | |
| Jan 1, 2012 | Dec 31, 2012 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2012 | — | |
| Jan 1, 2012 | Dec 31, 2012 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2012 | — | |
| Jan 1, 2012 | Dec 31, 2012 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2012 | — | |
| Jan 1, 2012 | Dec 31, 2012 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2012 | — | |
| Jan 1, 2012 | Dec 31, 2012 | MR | No | Yes | — | — | — | Resolved | Dec 31, 2012 | — | |
| Jan 1, 2012 | Dec 31, 2012 | MR | No | Yes | — | — | — | Resolved | Dec 31, 2012 | — | |
| Jan 1, 2012 | Dec 31, 2012 | MR | No | Yes | — | — | — | Resolved | Dec 31, 2012 | — | |
| Dec 1, 2011 | Dec 31, 2011 | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 2011 | — | |
| Dec 1, 2011 | Dec 31, 2011 | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 2011 | — | |
| Dec 1, 2011 | Dec 31, 2011 | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 2011 | — | |
| Dec 1, 2010 | Dec 31, 2010 | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 2010 | — | |
| Dec 1, 2010 | Dec 31, 2010 | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 2010 | — |
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.