GREENHORN SUBD
PWS ID: ID5070020 · KETCHUM, Idaho 83340
Population Served
75
Total Violations
105
Health-Based Violations
51
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 29
- County
- Blaine
- School/Daycare
- No
- MCL Violations
- 51
- Monitoring Violations
- 52
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Total Haloacetic Acids (HAA5) | MCL | 30 | 2020 |
| Coliform (TCR) | MR | 20 | 2005 |
| Coliform (TCR) | MCL | 16 | 2013 |
| Lead and Copper Rule | MR | 8 | 2024 |
| Groundwater Rule | MR | 6 | 2024 |
| Chlorine | MR | 6 | 2024 |
| Revised Total Coliform Rule | MCL | 5 | 2017 |
| TTHM | MR | 3 | 2017 |
| Total Haloacetic Acids (HAA5) | MR | 3 | 2017 |
| Revised Total Coliform Rule | MON | 3 | 2023 |
| Nitrite | MR | 2 | 1993 |
| LEAD AND COPPER RULE REVISIONS | RPT | 2 | 2025 |
| Nitrate | MR | 1 | 1999 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.