OAKWOOD PARK WATER ASSOCIATION
PWS ID: IA1700352 · MASON CITY, Iowa 50401
Population Served
66
Total Violations
278
Health-Based Violations
140
Water Source
Groundwater
System Details
- System Type
- Transient Non-Community
- Owner Type
- Private
- Connections
- 33
- County
- Cerro Gordo
- School/Daycare
- No
- MCL Violations
- 140
- Monitoring Violations
- 123
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Arsenic | MCL | 113 | 2003 |
| Coliform (TCR) | MR | 60 | 1998 |
| Coliform (TCR) | MCL | 27 | 2000 |
| Arsenic | MR | 17 | 1998 |
| Lead and Copper Rule | MR | 9 | 2017 |
| Barium | MR | 6 | 1987 |
| Mercury | MR | 6 | 1987 |
| Selenium | MR | 6 | 1987 |
| Chromium | MR | 6 | 1987 |
| Fluoride | MR | 6 | 1987 |
| Antimony, Total | MR | 4 | 1994 |
| Cadmium | MR | 3 | 1987 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.