LA CASA GRANDE WATER AND SEWER DISTRICT
PWS ID: MT0001924 · EAST HELENA, Montana 59635
Population Served
404
Total Violations
48
Health-Based Violations
6
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 155
- County
- Lewis and Clark
- School/Daycare
- No
- MCL Violations
- 6
- Monitoring Violations
- 24
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Consumer Confidence Rule | Other | 18 | 2014 |
| Lead and Copper Rule | MR | 12 | 2024 |
| Coliform (TCR) | MCL | 6 | 2003 |
| Coliform (TCR) | MR | 6 | 2005 |
| Nitrate-Nitrite | MR | 3 | 2005 |
| Nitrate | MR | 2 | 1997 |
| Arsenic | MR | 1 | 1996 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.