BLUE CLOUD SUBDIVISION
PWS ID: MT0004288 · HELENA, Montana 59602
Population Served
60
Total Violations
352
Health-Based Violations
152
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 22
- County
- Lewis and Clark
- School/Daycare
- No
- MCL Violations
- 152
- Monitoring Violations
- 195
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Arsenic | MCL | 146 | 2017 |
| Arsenic | MR | 7 | 2012 |
| Coliform (TCR) | MCL | 6 | 2003 |
| Consumer Confidence Rule | Other | 5 | 2019 |
| 1,2,4-Trichlorobenzene | MR | 3 | 2008 |
| Xylenes, Total | MR | 3 | 2008 |
| DICHLOROMETHANE | MR | 3 | 2008 |
| o-Dichlorobenzene | MR | 3 | 2008 |
| p-Dichlorobenzene | MR | 3 | 2008 |
| 1,1-Dichloroethylene | MR | 3 | 2008 |
| Trichloroethylene | MR | 3 | 2008 |
| Benzene | MR | 3 | 2008 |
| Cadmium | MR | 3 | 2008 |
| Chromium | MR | 3 | 2008 |
| Fluoride | MR | 3 | 2008 |
| Mercury | MR | 3 | 2008 |
| Antimony, Total | MR | 3 | 2008 |
| Beryllium, Total | MR | 3 | 2008 |
| Selenium | MR | 3 | 2008 |
| Endrin | MR | 3 | 2008 |
| BHC-GAMMA | MR | 3 | 2008 |
| Toxaphene | MR | 3 | 2008 |
| Di(2-ethylhexyl) adipate | MR | 3 | 2008 |
| OXAMYL | MR | 3 | 2008 |
| Picloram | MR | 3 | 2008 |
| Dinoseb | MR | 3 | 2008 |
| Hexachlorocyclopentadiene | MR | 3 | 2008 |
| Carbofuran | MR | 3 | 2008 |
| Aldicarb | MR | 3 | 2008 |
| LASSO | MR | 3 | 2008 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.