MOUNT PLEASANT ESTATES
PWS ID: MT0000644 · SIDNEY, Montana 59270
Population Served
45
Total Violations
474
Health-Based Violations
7
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 15
- County
- Richland
- School/Daycare
- No
- MCL Violations
- 7
- Monitoring Violations
- 447
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Lead and Copper Rule | MR | 23 | 2024 |
| Consumer Confidence Rule | Other | 17 | 2021 |
| Nickel | MR | 11 | 2011 |
| Antimony, Total | MR | 11 | 2011 |
| Beryllium, Total | MR | 11 | 2011 |
| Thallium, Total | MR | 11 | 2011 |
| Toxaphene | MR | 8 | 2005 |
| Dalapon | MR | 8 | 2005 |
| OXAMYL | MR | 8 | 2005 |
| Simazine | MR | 8 | 2005 |
| Picloram | MR | 8 | 2005 |
| Aldicarb sulfoxide | MR | 8 | 2005 |
| Aldicarb | MR | 8 | 2005 |
| Atrazine | MR | 8 | 2005 |
| Heptachlor | MR | 8 | 2005 |
| 2,4-D | MR | 8 | 2005 |
| 2,4,5-TP | MR | 8 | 2005 |
| Pentachlorophenol | MR | 8 | 2005 |
| Arsenic | MR | 8 | 2005 |
| Endrin | MR | 8 | 2005 |
| Methoxychlor | MR | 8 | 2005 |
| Di(2-ethylhexyl) phthalate | MR | 8 | 2005 |
| Dinoseb | MR | 8 | 2005 |
| Aldicarb sulfone | MR | 8 | 2005 |
| Carbofuran | MR | 8 | 2005 |
| LASSO | MR | 8 | 2005 |
| Heptachlor epoxide | MR | 8 | 2005 |
| HEXACHLOROBENZENE | MR | 8 | 2005 |
| Chlordane | MR | 8 | 2005 |
| Hexachlorocyclopentadiene | MR | 8 | 2005 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.