RIVERDALE SCHOOL DISTRICT #100
PWS ID: IL3113985 · PORT BYRON, Illinois 61275
Population Served
1,340
Total Violations
356
Health-Based Violations
12
Water Source
Groundwater
System Details
- System Type
- Non-Transient Non-Community
- Owner Type
- Public/Private
- Connections
- 5
- County
- Rock Island
- School/Daycare
- Yes
- MCL Violations
- 4
- Monitoring Violations
- 311
- Treatment Tech Violations
- 8
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Public Notice | Other | 22 | 2025 |
| Lead and Copper Rule | MR | 21 | 2024 |
| Arsenic | MR | 18 | 2024 |
| Coliform (TCR) | MR | 17 | 2007 |
| Chlorine | MR | 17 | 2025 |
| Revised Total Coliform Rule | MON | 14 | 2025 |
| TTHM | MR | 12 | 2024 |
| Total Haloacetic Acids (HAA5) | MR | 12 | 2024 |
| Nitrate | MR | 7 | 2024 |
| Revised Total Coliform Rule | RPT | 7 | 2023 |
| 1,2,4-Trichlorobenzene | MR | 6 | 2024 |
| Xylenes, Total | MR | 6 | 2024 |
| p-Dichlorobenzene | MR | 6 | 2024 |
| Vinyl chloride | MR | 6 | 2024 |
| 1,1-Dichloroethylene | MR | 6 | 2024 |
| trans-1,2-Dichloroethylene | MR | 6 | 2024 |
| 1,2-Dichloroethane | MR | 6 | 2024 |
| 1,1,1-Trichloroethane | MR | 6 | 2024 |
| Carbon tetrachloride | MR | 6 | 2024 |
| 1,2-Dichloropropane | MR | 6 | 2024 |
| Tetrachloroethylene | MR | 6 | 2024 |
| CHLOROBENZENE | MR | 6 | 2024 |
| Toluene | MR | 6 | 2024 |
| Ethylbenzene | MR | 6 | 2024 |
| cis-1,2-Dichloroethylene | MR | 6 | 2024 |
| Styrene | MR | 6 | 2024 |
| DICHLOROMETHANE | MR | 6 | 2024 |
| Benzene | MR | 6 | 2024 |
| 1,1,2-Trichloroethane | MR | 6 | 2024 |
| o-Dichlorobenzene | MR | 6 | 2024 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.