LAKE RIDGE, INCORPORATED
PWS ID: IA5225315 · GRINNELL, Iowa 50112
Population Served
1,300
Total Violations
106
Health-Based Violations
0
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 420
- County
- Johnson
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 86
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 21 | 2016 |
| Revised Total Coliform Rule | MON | 11 | 2025 |
| Lead and Copper Rule | MR | 9 | 2017 |
| Nitrate | MR | 8 | 1998 |
| Xylenes, Total | MR | 7 | 1999 |
| TTHM | MR | 6 | 2025 |
| Total Haloacetic Acids (HAA5) | MR | 6 | 2025 |
| 1,2,4-Trichlorobenzene | MR | 4 | 1997 |
| Nitrite | MR | 4 | 1996 |
| Antimony, Total | MR | 4 | 1994 |
| Public Notice | Other | 3 | 2023 |
| LASSO | MR | 3 | 1997 |
| Arsenic | MR | 3 | 2001 |
| Consumer Confidence Rule | Other | 1 | 2025 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.