POTOMAC BAR
Montana — Transient Non-Community — PWSID: MT0000849
System Information
| PWSID | MT0000849 |
| System Name | POTOMAC BAR |
| System Type | Transient Non-Community |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Private |
| 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 | 59823 |
| Address | PO BOX 556 |
| Organization | BROWN, KENNETH |
| Phone | 406-240-3863 |
Population & Service
| Population Served | 93 |
| Service Connections | 1 |
Drinking Water Violations (398)
This water system has 398 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dec 1, 2025 | Dec 31, 2025 | MON | No | Yes | — | — | — | Resolved | Dec 31, 2025 | — | |
| Dec 1, 2025 | Dec 31, 2025 | MON | No | Yes | — | — | — | Resolved | Dec 31, 2025 | — | |
| Dec 1, 2025 | Dec 31, 2025 | MON | No | Yes | — | — | — | Resolved | Dec 31, 2025 | — | |
| Oct 4, 2025 | — | TT | Yes | No | — | — | — | Resolved | Dec 4, 2025 | — | |
| Oct 4, 2025 | — | TT | Yes | No | — | — | — | Resolved | Dec 4, 2025 | — | |
| Oct 4, 2025 | — | TT | Yes | No | — | — | — | Resolved | Dec 4, 2025 | — | |
| Oct 1, 2025 | Oct 31, 2025 | MON | No | Yes | — | — | — | Archived | Oct 31, 2025 | — | |
| Oct 1, 2025 | Oct 31, 2025 | MON | No | Yes | — | — | — | Archived | Oct 31, 2025 | — | |
| Aug 13, 2025 | — | MR | No | Yes | — | — | — | Resolved | Nov 15, 2025 | — | |
| Aug 13, 2025 | — | MR | No | Yes | — | — | — | Resolved | Nov 15, 2025 | — | |
| Aug 13, 2025 | — | MR | No | Yes | — | — | — | Resolved | Nov 15, 2025 | — | |
| Jul 1, 2025 | Jul 31, 2025 | MON | No | Yes | — | — | — | Resolved | Jul 31, 2025 | — | |
| Jul 1, 2025 | Jul 31, 2025 | MON | No | Yes | — | — | — | Resolved | Jul 31, 2025 | — | |
| Jul 1, 2025 | Jul 31, 2025 | MON | No | Yes | — | — | — | Resolved | Jul 31, 2025 | — | |
| May 1, 2025 | May 31, 2025 | MON | No | Yes | — | — | — | Resolved | May 31, 2025 | — | |
| May 1, 2025 | May 31, 2025 | MON | No | Yes | — | — | — | Resolved | May 31, 2025 | — | |
| May 1, 2025 | May 31, 2025 | MON | No | Yes | — | — | — | Resolved | May 31, 2025 | — | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | — | — | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | — | — | — | Archived | Dec 31, 2025 | — | |
| Nov 1, 2024 | Nov 30, 2024 | MON | No | Yes | — | — | — | Resolved | Nov 30, 2024 | — | |
| Nov 1, 2024 | Nov 30, 2024 | MON | No | Yes | — | — | — | Resolved | Nov 30, 2024 | — | |
| Nov 1, 2024 | Nov 30, 2024 | MON | No | Yes | — | — | — | Resolved | Nov 30, 2024 | — | |
| Jul 1, 2024 | Jul 31, 2024 | MON | No | Yes | — | — | — | Resolved | Jul 31, 2024 | — | |
| Jul 1, 2024 | Jul 31, 2024 | MON | No | Yes | — | — | — | Resolved | Jul 31, 2024 | — | |
| Jul 1, 2024 | Jul 31, 2024 | MON | No | Yes | — | — | — | Resolved | Jul 31, 2024 | — | |
| Jan 1, 2024 | Dec 31, 2024 | MR | No | Yes | — | — | — | Archived | Dec 31, 2024 | — | |
| Jan 1, 2024 | Dec 31, 2024 | MR | No | Yes | — | — | — | Archived | Dec 31, 2024 | — | |
| Oct 1, 2023 | Oct 31, 2023 | MON | No | Yes | — | — | — | Resolved | Oct 31, 2023 | — | |
| Oct 1, 2023 | Oct 31, 2023 | MON | No | Yes | — | — | — | Resolved | Oct 31, 2023 | — | |
| Oct 1, 2023 | Oct 31, 2023 | MON | No | Yes | — | — | — | Resolved | Oct 31, 2023 | — | |
| Oct 1, 2023 | Oct 31, 2023 | MON | No | Yes | — | — | — | Resolved | Oct 31, 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, 2023 | Sep 30, 2023 | MON | No | Yes | — | — | — | Resolved | Sep 30, 2023 | — | |
| Aug 1, 2023 | Aug 31, 2023 | MON | No | Yes | — | — | — | Resolved | Aug 28, 2023 | — | |
| Aug 1, 2023 | Aug 31, 2023 | MON | No | Yes | — | — | — | Resolved | Aug 28, 2023 | — | |
| Aug 1, 2023 | Aug 31, 2023 | MON | No | Yes | — | — | — | Resolved | Aug 28, 2023 | — | |
| Jul 1, 2023 | Jul 31, 2023 | MON | No | Yes | — | — | — | Resolved | Jul 31, 2023 | — | |
| Jul 1, 2023 | Jul 31, 2023 | MON | No | Yes | — | — | — | Resolved | Jul 31, 2023 | — | |
| Jul 1, 2023 | Jul 31, 2023 | MON | No | Yes | — | — | — | Resolved | Jul 31, 2023 | — | |
| Jan 1, 2022 | Dec 31, 2022 | MR | No | Yes | — | — | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2022 | Dec 31, 2022 | MR | No | Yes | — | — | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2022 | Dec 31, 2022 | MR | No | Yes | — | — | — | Resolved | Dec 31, 2022 | — | |
| Jun 1, 2014 | Jun 30, 2014 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jun 30, 2014 | — | |
| Jun 1, 2014 | Jun 30, 2014 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jun 30, 2014 | — | |
| Jun 1, 2014 | Jun 30, 2014 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jun 30, 2014 | — | |
| Jun 1, 2014 | Jun 30, 2014 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jun 30, 2014 | — | |
| Jun 1, 2014 | Jun 30, 2014 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jun 30, 2014 | — | |
| Aug 1, 2013 | Aug 31, 2013 | MR | No | No | — | 5% of samples | — | Resolved | Aug 31, 2013 | — | |
| Aug 1, 2013 | Aug 31, 2013 | MR | No | No | — | 5% of samples | — | Resolved | Aug 31, 2013 | — |
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.