CUSTER SCHOOL DIST NO 15
Montana — Non-Transient Non-Community — PWSID: MT0001748
System Information
| PWSID | MT0001748 |
| System Name | CUSTER SCHOOL DIST NO 15 |
| 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 | CUSTER |
| ZIP Code | 59024 |
| Address | PO BOX 69 |
| Organization | OLSON, LANCE |
| Phone | 406-856-4117 |
Population & Service
| Population Served | 100 |
| Service Connections | 1 |
Drinking Water Violations (87)
This water system has 87 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct 1, 2024 | — | MR | No | No | — | TT | — | Unaddressed | — | — | |
| Oct 1, 2024 | — | MR | No | No | — | TT | — | Unaddressed | — | — | |
| Oct 1, 2022 | — | MR | No | No | — | TT | — | Resolved | Sep 29, 2023 | — | |
| Oct 1, 2022 | — | MR | No | No | — | TT | — | Resolved | Sep 29, 2023 | — | |
| Oct 1, 2022 | — | MR | No | No | — | TT | — | Resolved | Sep 29, 2023 | — | |
| Sep 29, 2021 | — | MR | No | No | — | TT | — | Resolved | Oct 11, 2021 | — | |
| Sep 29, 2021 | — | MR | No | No | — | TT | — | Resolved | Oct 11, 2021 | — | |
| Jul 1, 2020 | — | MR | No | No | — | TT | — | Resolved | Aug 4, 2020 | — | |
| Jul 1, 2020 | — | MR | No | No | — | TT | — | Resolved | Aug 4, 2020 | — | |
| Jul 1, 2020 | — | MR | No | No | — | TT | — | Resolved | Aug 4, 2020 | — | |
| Jan 1, 2020 | Aug 31, 2022 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Aug 31, 2022 | — | |
| Jan 1, 2020 | Aug 31, 2022 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Aug 31, 2022 | — | |
| Jan 1, 2020 | Aug 31, 2022 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Aug 31, 2022 | — | |
| Jan 1, 2020 | Aug 31, 2022 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Aug 31, 2022 | — | |
| Jan 1, 2020 | Aug 31, 2022 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Aug 31, 2022 | — | |
| Jan 1, 2020 | Aug 31, 2022 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Aug 31, 2022 | — | |
| Jan 1, 2019 | — | MR | No | No | — | TT | — | Resolved | Feb 4, 2019 | — | |
| Jan 1, 2019 | — | MR | No | No | — | TT | — | Resolved | Feb 4, 2019 | — | |
| Jan 1, 2019 | — | MR | No | No | — | TT | — | Resolved | Feb 4, 2019 | — | |
| Jan 1, 2018 | — | MR | No | No | — | TT | — | Resolved | Feb 23, 2018 | — | |
| Jan 1, 2018 | — | MR | No | No | — | TT | — | Resolved | Feb 23, 2018 | — | |
| Jan 1, 2018 | — | MR | No | No | — | TT | — | Resolved | Feb 23, 2018 | — | |
| Dec 1, 2017 | Dec 31, 2017 | MON | No | Yes | — | — | — | Resolved | Dec 31, 2017 | — | |
| Dec 1, 2017 | Dec 31, 2017 | MON | No | Yes | — | — | — | Resolved | Dec 31, 2017 | — | |
| Dec 1, 2017 | Dec 31, 2017 | MON | No | Yes | — | — | — | Resolved | Dec 31, 2017 | — | |
| Oct 1, 2017 | Dec 31, 2017 | MR | No | Yes | — | — | — | Resolved | Dec 31, 2017 | — | |
| Oct 1, 2017 | Dec 31, 2017 | MR | No | Yes | — | — | — | Resolved | Dec 31, 2017 | — | |
| Oct 1, 2017 | Dec 31, 2017 | MR | No | Yes | — | — | — | Resolved | Dec 31, 2017 | — | |
| Jul 1, 2016 | Jul 31, 2016 | MON | No | Yes | — | — | — | Resolved | Jul 31, 2016 | — | |
| Jul 1, 2016 | Jul 31, 2016 | MON | No | Yes | — | — | — | Resolved | Jul 31, 2016 | — | |
| Jul 1, 2016 | Jul 31, 2016 | MON | No | Yes | — | — | — | Resolved | Jul 31, 2016 | — | |
| Jul 1, 2016 | Sep 30, 2016 | MCL | Yes | No | 14.4 MG/L | — | 10 | Resolved | Sep 30, 2016 | — | |
| Jul 1, 2016 | Sep 30, 2016 | MCL | Yes | No | 14.4 MG/L | — | 10 | Resolved | Sep 30, 2016 | — | |
| Jul 1, 2016 | Sep 30, 2016 | MCL | Yes | No | 14.4 MG/L | — | 10 | Resolved | Sep 30, 2016 | — | |
| Jul 1, 2016 | Sep 30, 2016 | MCL | Yes | No | 14.4 MG/L | — | 10 | Resolved | Sep 30, 2016 | — | |
| Jul 1, 2016 | Jul 31, 2016 | MON | No | Yes | — | — | — | Resolved | Jul 31, 2016 | — | |
| Apr 1, 2016 | Jun 30, 2016 | MCL | Yes | No | 18.1 MG/L | — | 10 | Resolved | Jun 30, 2016 | — | |
| Apr 1, 2016 | Jun 30, 2016 | MCL | Yes | No | 18.1 MG/L | — | 10 | Resolved | Jun 30, 2016 | — | |
| Apr 1, 2016 | Jun 30, 2016 | MCL | Yes | No | 18.1 MG/L | — | 10 | Resolved | Jun 30, 2016 | — | |
| Apr 1, 2016 | Jun 30, 2016 | MCL | Yes | No | 18.1 MG/L | — | 10 | Resolved | Jun 30, 2016 | — | |
| Oct 1, 2013 | — | MR | No | No | — | TT | — | Resolved | Jul 8, 2014 | — | |
| Oct 1, 2013 | — | MR | No | No | — | TT | — | Resolved | Jul 8, 2014 | — | |
| Oct 1, 2013 | — | MR | No | No | — | TT | — | Resolved | Jul 8, 2014 | — | |
| Jul 1, 2009 | Jul 31, 2009 | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2009 | — | |
| Jul 1, 2009 | Jul 31, 2009 | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2009 | — | |
| Jul 1, 2009 | Jul 31, 2009 | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2009 | — | |
| Jun 1, 2009 | Jun 30, 2009 | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 2009 | — | |
| Jun 1, 2009 | Jun 30, 2009 | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 2009 | — | |
| Jun 1, 2009 | Jun 30, 2009 | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 2009 | — | |
| Jan 1, 2005 | Dec 31, 2005 | MR | No | Yes | — | — | — | Resolved | Dec 31, 2005 | — |
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.