OBIES
PWS ID: IA4938205 · MAQUOKETA, Iowa 52060
Population Served
64
Total Violations
293
Health-Based Violations
126
Water Source
Groundwater
System Details
- System Type
- Transient Non-Community
- Owner Type
- Private
- Connections
- 1
- County
- Jackson
- School/Daycare
- No
- MCL Violations
- 126
- Monitoring Violations
- 152
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Revised Total Coliform Rule | MON | 101 | 2025 |
| Coliform (TCR) | MCL | 64 | 1998 |
| Nitrate | MCL | 62 | 1995 |
| Coliform (TCR) | MR | 30 | 2013 |
| Nitrate | MR | 18 | 1996 |
| Public Notice | Other | 15 | 2022 |
| E. COLI | MR | 3 | 2020 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.