SHERIDAN TOWN OF
PWS ID: MT0000329 · SHERIDAN, Montana 59749
Population Served
632
Total Violations
123
Health-Based Violations
0
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 413
- County
- Madison
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 111
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 31 | 2008 |
| Lead and Copper Rule | MR | 20 | 2024 |
| Chlorine | MR | 12 | 2014 |
| Nitrate-Nitrite | MR | 6 | 2008 |
| Consumer Confidence Rule | Other | 6 | 2014 |
| Antimony, Total | MR | 3 | 2002 |
| Thallium, Total | MR | 3 | 2002 |
| Total Haloacetic Acids (HAA5) | MR | 3 | 2009 |
| TTHM | MR | 3 | 2009 |
| Chromium | MR | 3 | 2011 |
| Fluoride | MR | 3 | 2011 |
| Mercury | MR | 3 | 2011 |
| Barium | MR | 3 | 2011 |
| Beryllium, Total | MR | 3 | 2002 |
| Revised Total Coliform Rule | MON | 3 | 2017 |
| Nickel | MR | 3 | 2002 |
| Cadmium | MR | 3 | 2011 |
| Selenium | MR | 3 | 2011 |
| Asbestos | MR | 3 | 2011 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.