CREST HILL
PWS ID: IL1970250 · CREST HILL, Illinois 60403
PFAS Detected
8 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
Population Served
21,169
Total Violations
190
Health-Based Violations
29
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 6,500
- County
- Will
- School/Daycare
- No
- MCL Violations
- 17
- Monitoring Violations
- 126
- Treatment Tech Violations
- 12
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Revised Total Coliform Rule | MON | 27 | 2021 |
| Chlorine | MR | 24 | 2021 |
| Coliform (TCR) | MCL | 17 | 2001 |
| Lead and Copper Rule | MR | 14 | 2024 |
| Lead and Copper Rule | TT | 12 | 2024 |
| TTHM | MR | 8 | 2023 |
| Total Haloacetic Acids (HAA5) | MR | 8 | 2023 |
| Carbon tetrachloride | MR | 6 | 1992 |
| Trichloroethylene | MR | 6 | 1992 |
| Consumer Confidence Rule | Other | 6 | 2025 |
| Coliform (TCR) | MR | 5 | 1997 |
| Public Notice | Other | 5 | 2025 |
| p-Dichlorobenzene | MR | 4 | 1990 |
| 1,1-Dichloroethylene | MR | 4 | 1990 |
| 1,2-Dichloroethane | MR | 4 | 1990 |
| 1,1,1-Trichloroethane | MR | 4 | 1990 |
| Benzene | MR | 4 | 1990 |
| Combined Radium (-226 and -228) | MR | 4 | 2020 |
| CYANIDE | MR | 3 | 2020 |
| LEAD AND COPPER RULE REVISIONS | RPT | 2 | 2025 |
| Gross Alpha, Excl. Radon and U | MR | 1 | 1977 |
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 82 of 420 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| PFMPA | 6/12/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFHpS | 6/12/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| ADONA | 6/12/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| HFPO-DA | 6/12/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFBA | 6/12/2023 | 0.0125 µg/L | 0.005 µg/L | Detected |
| 6:2 FTS | 6/12/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 11Cl-PF3OUdS | 6/12/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 8:2 FTS | 6/12/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFUnA | 6/12/2023 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFPeA | 6/12/2023 | 0.0173 µg/L | 0.003 µg/L | Detected |
| PFMBA | 6/12/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFEESA | 6/12/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NFDHA | 6/12/2023 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFPeS | 6/12/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| lithium | 6/12/2023 | 34.3000 µg/L | 9 µg/L | Detected |
| 4:2 FTS | 6/12/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFTA | 6/12/2023 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| PFBS | 6/12/2023 | 0.0278 µg/L | 0.003 µg/L | Detected |
| PFHpA | 6/12/2023 | 0.0100 µg/L | 0.003 µg/L | Detected |
| PFHxS | 6/12/2023 | 0.0051 µg/L | 0.003 µg/L | Detected |
| NMeFOSAA | 6/12/2023 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| 9Cl-PF3ONS | 6/12/2023 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFTrDA | 6/12/2023 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| PFNA | 6/12/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOS | 6/12/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOA | 6/12/2023 | 0.0111 µg/L | 0.004 µg/L | Detected |
| PFDA | 6/12/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDoA | 6/12/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxA | 6/12/2023 | 0.0151 µg/L | 0.003 µg/L | Detected |
| NEtFOSAA | 6/12/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFDoA | 6/12/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFUnA | 6/12/2023 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFPeS | 6/12/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| NFDHA | 6/12/2023 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFDA | 6/12/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFEESA | 6/12/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMBA | 6/12/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxA | 6/12/2023 | 0.0035 µg/L | 0.003 µg/L | Detected |
| PFPeA | 6/12/2023 | 0.0049 µg/L | 0.003 µg/L | Detected |
| PFMPA | 6/12/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| 8:2 FTS | 6/12/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 4:2 FTS | 6/12/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 6:2 FTS | 6/12/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFBA | 6/12/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFOA | 6/12/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| ADONA | 6/12/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 9Cl-PF3ONS | 6/12/2023 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| HFPO-DA | 6/12/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFNA | 6/12/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFHxS | 6/12/2023 | 0.0099 µg/L | 0.003 µg/L | Detected |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
PFAS data from EPA UCMR5 monitoring program (2023-2025).
This data is provided for informational purposes only.