CARDWELL SCHOOL DIST 16 AND 31
Montana — Non-Transient Non-Community — PWSID: MT0001398
System Information
| PWSID | MT0001398 |
| System Name | CARDWELL SCHOOL DIST 16 AND 31 |
| System Type | Non-Transient Non-Community |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | State |
| EPA Region | 08 |
| Serves School | Yes |
| Wholesaler | No |
| First Reported | Mar 5, 1980 |
| Last Reported | Mar 26, 2026 |
Location & Contact
| State | Montana |
| City | CARDWELL |
| ZIP Code | 59721 |
| Address | 80 MT HWY 359 |
| Organization | COOMBE, SETH |
| Phone | 406-287-3321 |
Population & Service
| Population Served | 63 |
| Service Connections | 1 |
Drinking Water Violations (127)
This water system has 127 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 | — | MR | No | No | — | TT | — | Unaddressed | — | — | |
| Dec 1, 2025 | — | MR | No | No | — | TT | — | Unaddressed | — | — | |
| Jun 1, 2024 | — | TT | Yes | No | — | — | — | Resolved | Aug 14, 2024 | — | |
| Jun 1, 2024 | — | TT | Yes | No | — | — | — | Resolved | Aug 14, 2024 | — | |
| Jun 1, 2024 | — | TT | Yes | No | — | — | — | Resolved | Aug 14, 2024 | — | |
| Jan 1, 2023 | Dec 31, 2025 | MR | No | Yes | — | 0.010 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2023 | Dec 31, 2025 | MR | No | Yes | — | 0.010 mg/L | — | Archived | Dec 31, 2025 | — | |
| Oct 1, 2019 | Oct 31, 2019 | MON | No | Yes | — | — | — | Resolved | Oct 31, 2019 | — | |
| Oct 1, 2019 | Sep 30, 2022 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Sep 30, 2022 | — | |
| Oct 1, 2019 | Sep 30, 2022 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Sep 30, 2022 | — | |
| Oct 1, 2019 | Sep 30, 2022 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Sep 30, 2022 | — | |
| Oct 1, 2019 | Sep 30, 2022 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Sep 30, 2022 | — | |
| Oct 1, 2019 | Sep 30, 2022 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Sep 30, 2022 | — | |
| Oct 1, 2019 | Sep 30, 2022 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Sep 30, 2022 | — | |
| Oct 1, 2019 | Oct 31, 2019 | MON | No | Yes | — | — | — | Resolved | Oct 31, 2019 | — | |
| Oct 1, 2019 | Oct 31, 2019 | MON | No | Yes | — | — | — | Resolved | Oct 31, 2019 | — | |
| Sep 2, 2018 | — | RPT | No | No | — | — | — | Resolved | Nov 5, 2018 | — | |
| Sep 2, 2018 | — | RPT | No | No | — | — | — | Resolved | Nov 5, 2018 | — | |
| Sep 2, 2018 | — | RPT | No | No | — | — | — | Resolved | Nov 5, 2018 | — | |
| 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 | — | |
| Jan 1, 2017 | Dec 31, 2017 | MR | No | Yes | — | — | — | Resolved | Dec 31, 2017 | — | |
| Jan 1, 2017 | Dec 31, 2017 | MR | No | Yes | — | — | — | Resolved | Dec 31, 2017 | — | |
| Jan 1, 2017 | Dec 31, 2017 | MR | No | Yes | — | — | — | Resolved | Dec 31, 2017 | — | |
| Jan 1, 2017 | Dec 31, 2017 | MR | No | Yes | — | — | — | Resolved | Dec 31, 2017 | — | |
| Sep 1, 2016 | Sep 30, 2016 | MON | No | Yes | — | — | — | Resolved | Sep 30, 2016 | — | |
| Sep 1, 2016 | Sep 30, 2016 | MON | No | Yes | — | — | — | Resolved | Sep 30, 2016 | — | |
| Sep 1, 2016 | Sep 30, 2016 | MON | No | Yes | — | — | — | Resolved | Sep 30, 2016 | — | |
| Jan 1, 2014 | — | MR | No | No | — | TT | — | Resolved | Mar 10, 2014 | — | |
| Jan 1, 2014 | Sep 30, 2016 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Sep 30, 2016 | — | |
| Jan 1, 2014 | Sep 30, 2016 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Sep 30, 2016 | — | |
| Jan 1, 2014 | Sep 30, 2016 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Sep 30, 2016 | — | |
| Jan 1, 2014 | Dec 31, 2016 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2016 | — | |
| Jan 1, 2014 | Dec 31, 2016 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2016 | — | |
| Jan 1, 2014 | Dec 31, 2016 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2016 | — | |
| Jan 1, 2014 | Dec 31, 2016 | MR | No | Yes | — | 0.05 mg/L | — | Resolved | Dec 31, 2016 | — | |
| Jan 1, 2014 | Dec 31, 2016 | MR | No | Yes | — | 0.05 mg/L | — | Resolved | Dec 31, 2016 | — | |
| Jan 1, 2014 | Dec 31, 2016 | MR | No | Yes | — | 0.05 mg/L | — | Resolved | Dec 31, 2016 | — | |
| Jan 1, 2014 | Dec 31, 2016 | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Dec 31, 2016 | — | |
| Jan 1, 2014 | Dec 31, 2016 | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Dec 31, 2016 | — | |
| Jan 1, 2014 | Dec 31, 2016 | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Dec 31, 2016 | — | |
| Jan 1, 2014 | Dec 31, 2016 | MR | No | Yes | — | 0.004 mg/L | — | Resolved | Dec 31, 2016 | — | |
| Jan 1, 2014 | Dec 31, 2016 | MR | No | Yes | — | 0.004 mg/L | — | Resolved | Dec 31, 2016 | — | |
| Jan 1, 2014 | Dec 31, 2016 | MR | No | Yes | — | 0.004 mg/L | — | Resolved | Dec 31, 2016 | — | |
| Jan 1, 2014 | Dec 31, 2016 | MR | No | Yes | — | 0.006 mg/L | — | Resolved | Dec 31, 2016 | — | |
| Jan 1, 2014 | Dec 31, 2016 | MR | No | Yes | — | 0.006 mg/L | — | Resolved | Dec 31, 2016 | — | |
| Jan 1, 2014 | Dec 31, 2016 | MR | No | Yes | — | 0.006 mg/L | — | Resolved | Dec 31, 2016 | — | |
| Jan 1, 2014 | Dec 31, 2016 | MR | No | Yes | — | — | — | Resolved | Dec 31, 2016 | — | |
| Jan 1, 2014 | Dec 31, 2016 | MR | No | Yes | — | 2 mg/L | — | Resolved | Dec 31, 2016 | — |
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.