OAK VALLEY
PWS ID: IA5784311 · CEDAR RAPIDS, Iowa 52408
Population Served
100
Total Violations
242
Health-Based Violations
26
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 40
- County
- Linn
- School/Daycare
- No
- MCL Violations
- 26
- Monitoring Violations
- 97
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Public Notice | Other | 51 | 2025 |
| Coliform (TCR) | MR | 30 | 2015 |
| Nitrate | MR | 28 | 2024 |
| Coliform (TCR) | MCL | 26 | 2012 |
| Gross Alpha, Excl. Radon and U | MR | 9 | 2014 |
| Consumer Confidence Rule | Other | 8 | 2022 |
| Total Haloacetic Acids (HAA5) | MR | 4 | 2022 |
| Nitrite | MR | 4 | 1996 |
| E. COLI | MR | 4 | 2024 |
| TTHM | MR | 4 | 2022 |
| Chlorine | MR | 3 | 2006 |
| Lead and Copper Rule | MR | 3 | 2022 |
| Fluoride | MR | 1 | 1980 |
| Barium | MR | 1 | 1980 |
| Selenium | MR | 1 | 1980 |
| Mercury | MR | 1 | 1980 |
| Combined Radium (-226 and -228) | MR | 1 | 2014 |
| Chromium | MR | 1 | 1980 |
| Cadmium | MR | 1 | 1980 |
| Arsenic | MR | 1 | 1980 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.