HARDIN COUNTY WATER DISTRICT NO.1
PWS ID: IL0695000 · CAVE-IN-ROCK, Illinois 62919
Population Served
843
Total Violations
337
Health-Based Violations
18
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 337
- County
- Hardin
- School/Daycare
- No
- MCL Violations
- 18
- Monitoring Violations
- 304
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 22 | 2003 |
| Coliform (TCR) | MCL | 18 | 1993 |
| cis-1,2-Dichloroethylene | MR | 16 | 1994 |
| p-Dichlorobenzene | MR | 16 | 1994 |
| trans-1,2-Dichloroethylene | MR | 16 | 1994 |
| 1,2-Dichloroethane | MR | 16 | 1994 |
| 1,1,1-Trichloroethane | MR | 16 | 1994 |
| Trichloroethylene | MR | 16 | 1994 |
| CHLOROBENZENE | MR | 16 | 1994 |
| Toluene | MR | 16 | 1994 |
| Styrene | MR | 16 | 1994 |
| 1,2-Dichloropropane | MR | 16 | 1994 |
| Benzene | MR | 16 | 1994 |
| Ethylbenzene | MR | 16 | 1994 |
| Carbon tetrachloride | MR | 16 | 1994 |
| 1,1-Dichloroethylene | MR | 16 | 1994 |
| o-Dichlorobenzene | MR | 16 | 1994 |
| Xylenes, Total | MR | 16 | 1994 |
| Tetrachloroethylene | MR | 16 | 1994 |
| Consumer Confidence Rule | Other | 4 | 2021 |
| DICHLOROMETHANE | MR | 3 | 1994 |
| 1,2,4-Trichlorobenzene | MR | 3 | 1994 |
| 1,1,2-Trichloroethane | MR | 3 | 1994 |
| Gross Alpha, Excl. Radon and U | MR | 1 | 1977 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.