Waterloo
PWSID IL1330300 · Waterloo, Illinois · serves 10,190 people · groundwater source
C
Fair
PFAS test results (EPA UCMR 5)
| Contaminant | Result | Federal limit (MCL) | Sampled |
|---|---|---|---|
| PFBA | 16.9 ppt | — | 10/2/2024 |
| PFBA | 12.1 ppt | — | 7/31/2024 |
| PFBA | 10.8 ppt | — | 4/22/2024 |
| PFPeA | 3.2 ppt | — | 10/2/2024 |
ppt = parts per trillion (ng/L). Rows highlighted red meet or exceed the 2024 federal limit.
Violation history
| Date | Violation | Type | Health-based | Status |
|---|---|---|---|---|
| 2026-04-14 | Public Notice | Other | No | Resolved |
| 2025-04-01 | Combined Radium (-226 and -228) | MR | No | Resolved |
| 2025-04-01 | Vinyl chloride | MR | No | Resolved |
| 2025-04-01 | 1,2,4-Trichlorobenzene | MR | No | Resolved |
| 2025-04-01 | cis-1,2-Dichloroethylene | MR | No | Resolved |
| 2025-04-01 | Xylenes, Total | MR | No | Resolved |
| 2025-04-01 | DICHLOROMETHANE | MR | No | Resolved |
| 2025-04-01 | o-Dichlorobenzene | MR | No | Resolved |
| 2025-04-01 | p-Dichlorobenzene | MR | No | Resolved |
| 2025-04-01 | 1,1-Dichloroethylene | MR | No | Resolved |
| 2025-04-01 | trans-1,2-Dichloroethylene | MR | No | Resolved |
| 2025-04-01 | 1,2-Dichloroethane | MR | No | Resolved |
| 2025-04-01 | 1,1,1-Trichloroethane | MR | No | Resolved |
| 2025-04-01 | Carbon tetrachloride | MR | No | Resolved |
| 2025-04-01 | 1,2-Dichloropropane | MR | No | Resolved |
| 2025-04-01 | Trichloroethylene | MR | No | Resolved |
| 2025-04-01 | 1,1,2-Trichloroethane | MR | No | Resolved |
| 2025-04-01 | Tetrachloroethylene | MR | No | Resolved |
| 2025-04-01 | CHLOROBENZENE | MR | No | Resolved |
| 2025-04-01 | Benzene | MR | No | Resolved |
| 2025-04-01 | Toluene | MR | No | Resolved |
| 2025-04-01 | Ethylbenzene | MR | No | Resolved |
| 2025-04-01 | Styrene | MR | No | Resolved |
| 2025-04-01 | Nitrate | MR | No | Resolved |
| 2025-04-01 | Nitrite | MR | No | Resolved |
| 2025-01-01 | TTHM | MR | No | Resolved |
| 2025-01-01 | Total Haloacetic Acids (HAA5) | MR | No | Resolved |
| 2024-12-01 | Revised Total Coliform Rule | MON | No | Resolved |
| 2024-12-01 | Chlorine | MR | No | Resolved |
| 2023-10-01 | Total Haloacetic Acids (HAA5) | MR | No | Resolved |