JOHNSON COUNTY AG ASSOCIATION
PWS ID: IA5225901 · IOWA CITY, Iowa 52246
Population Served
218
Total Violations
137
Health-Based Violations
9
Water Source
Groundwater
System Details
- System Type
- Transient Non-Community
- Owner Type
- Local
- Connections
- 30
- County
- Johnson
- School/Daycare
- No
- MCL Violations
- 9
- Monitoring Violations
- 80
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Revised Total Coliform Rule | MON | 60 | 2025 |
| Public Notice | Other | 48 | 2023 |
| Nitrate | MR | 10 | 2024 |
| E. COLI | MR | 10 | 2022 |
| Coliform (TCR) | MCL | 9 | 2004 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.