HILLSBORO WATER WORKS
PWS ID: IA4425032 · WASHINGTON, Iowa 52353
Population Served
163
Total Violations
43
Health-Based Violations
9
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 130
- County
- Henry
- School/Daycare
- No
- MCL Violations
- 9
- Monitoring Violations
- 24
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Total Haloacetic Acids (HAA5) | MR | 9 | 2020 |
| Coliform (TCR) | MCL | 9 | 1993 |
| Nitrite | MR | 8 | 2017 |
| TTHM | MR | 4 | 2020 |
| Lead and Copper Rule | MR | 3 | 2018 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.