TWIN KNOLLS FOURTH/FIFTH ADDITION
PWS ID: IA5784326 · CEDAR RAPIDS, Iowa 52408
Population Served
90
Total Violations
165
Health-Based Violations
26
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 36
- County
- Linn
- School/Daycare
- No
- MCL Violations
- 26
- Monitoring Violations
- 27
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Public Notice | Other | 41 | 2025 |
| Coliform (TCR) | MCL | 26 | 2012 |
| Coliform (TCR) | MR | 11 | 2010 |
| Consumer Confidence Rule | Other | 8 | 2022 |
| Total Haloacetic Acids (HAA5) | MR | 4 | 2022 |
| TTHM | MR | 4 | 2022 |
| Lead and Copper Rule | MR | 4 | 2024 |
| Revised Total Coliform Rule | MON | 3 | 2025 |
| Nitrate | MR | 1 | 1997 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.