JEFFERSON SCHOOL DISTRICT NO 1
PWS ID: MT0001209 · GLENDIVE, Montana 59330
Population Served
270
Total Violations
308
Health-Based Violations
0
Water Source
Surface Water
System Details
- System Type
- Non-Transient Non-Community
- Owner Type
- Local
- Connections
- 1
- County
- Dawson
- School/Daycare
- Yes
- MCL Violations
- 0
- Monitoring Violations
- 301
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Lead and Copper Rule | MR | 26 | 2025 |
| Revised Total Coliform Rule | MON | 24 | 2025 |
| Coliform (TCR) | MR | 17 | 2015 |
| Total Haloacetic Acids (HAA5) | MR | 17 | 2019 |
| TTHM | MR | 17 | 2019 |
| Chlorine | MR | 15 | 2009 |
| Nitrate-Nitrite | MR | 11 | 2021 |
| E. COLI | MR | 7 | 2020 |
| Revised Total Coliform Rule | RPT | 6 | 2019 |
| Toxaphene | MR | 3 | 2017 |
| Dalapon | MR | 3 | 2017 |
| Di(2-ethylhexyl) adipate | MR | 3 | 2017 |
| OXAMYL | MR | 3 | 2017 |
| Simazine | MR | 3 | 2017 |
| Hexachlorocyclopentadiene | MR | 3 | 2017 |
| Carbofuran | MR | 3 | 2017 |
| Heptachlor | MR | 3 | 2017 |
| LASSO | MR | 3 | 2017 |
| Heptachlor epoxide | MR | 3 | 2017 |
| Benzo(a)pyrene | MR | 3 | 2017 |
| Pentachlorophenol | MR | 3 | 2017 |
| Nickel | MR | 3 | 2017 |
| Thallium, Total | MR | 3 | 2017 |
| 1,2,4-Trichlorobenzene | MR | 3 | 2017 |
| cis-1,2-Dichloroethylene | MR | 3 | 2017 |
| Xylenes, Total | MR | 3 | 2017 |
| o-Dichlorobenzene | MR | 3 | 2017 |
| p-Dichlorobenzene | MR | 3 | 2017 |
| Vinyl chloride | MR | 3 | 2017 |
| Carbon tetrachloride | MR | 3 | 2017 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.