NORTH HARLEM COLONY
PWS ID: MT0001771 · HARLEM, Montana 59526
Population Served
42
Total Violations
132
Health-Based Violations
0
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 6
- County
- Blaine
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 127
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Lead and Copper Rule | MR | 14 | 2015 |
| Arsenic | MR | 5 | 1999 |
| Nickel | MR | 4 | 1999 |
| Thallium, Total | MR | 4 | 1999 |
| Nitrate-Nitrite | MR | 4 | 2001 |
| Beryllium, Total | MR | 4 | 1999 |
| Antimony, Total | MR | 4 | 1999 |
| Dalapon | MR | 3 | 2002 |
| Picloram | MR | 3 | 2002 |
| Dinoseb | MR | 3 | 2002 |
| 2,4-D | MR | 3 | 2002 |
| 2,4,5-TP | MR | 3 | 2002 |
| Pentachlorophenol | MR | 3 | 2002 |
| 1,2,4-Trichlorobenzene | MR | 3 | 2002 |
| p-Dichlorobenzene | MR | 3 | 2002 |
| Vinyl chloride | MR | 3 | 2002 |
| 1,1-Dichloroethylene | MR | 3 | 2002 |
| trans-1,2-Dichloroethylene | MR | 3 | 2002 |
| Carbon tetrachloride | MR | 3 | 2002 |
| 1,2-Dichloropropane | MR | 3 | 2002 |
| Trichloroethylene | MR | 3 | 2002 |
| Tetrachloroethylene | MR | 3 | 2002 |
| Benzene | MR | 3 | 2002 |
| Toluene | MR | 3 | 2002 |
| Consumer Confidence Rule | Other | 3 | 2008 |
| 1,1,2-Trichloroethane | MR | 3 | 2002 |
| Styrene | MR | 3 | 2002 |
| o-Dichlorobenzene | MR | 3 | 2002 |
| 1,1,1-Trichloroethane | MR | 3 | 2002 |
| Xylenes, Total | MR | 3 | 2002 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.