STEGER
PWS ID: IL0314860 · MANTENO, Illinois 60950
PFAS Detected
1 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
Population Served
9,700
Total Violations
87
Health-Based Violations
20
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 3,425
- County
- Cook
- School/Daycare
- No
- MCL Violations
- 14
- Monitoring Violations
- 32
- Treatment Tech Violations
- 6
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 14 | 2016 |
| Coliform (TCR) | MR | 13 | 2015 |
| Consumer Confidence Rule | Other | 10 | 2025 |
| Chlorine | MR | 8 | 2015 |
| Lead and Copper Rule | TT | 6 | 2003 |
| Nitrite | MR | 4 | 2020 |
| Nitrate | MR | 4 | 2020 |
| Lead and Copper Rule | MR | 2 | 2020 |
| Gross Alpha, Excl. Radon and U | MR | 1 | 1977 |
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 4 of 120 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| lithium | 9/26/2023 | 36.0000 µg/L | 9 µg/L | Detected |
| HFPO-DA | 3/6/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFHxA | 3/6/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 9Cl-PF3ONS | 3/6/2023 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| 11Cl-PF3OUdS | 3/6/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFUnA | 3/6/2023 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| ADONA | 3/6/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDoA | 3/6/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDA | 3/6/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFOA | 3/6/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOS | 3/6/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFHxS | 3/6/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMBA | 3/6/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpA | 3/6/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFBS | 3/6/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| lithium | 3/6/2023 | 37.0000 µg/L | 9 µg/L | Detected |
| PFNA | 3/6/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| NMeFOSAA | 3/6/2023 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| PFHpS | 3/6/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFPeS | 3/6/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFTA | 3/6/2023 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| PFMPA | 3/6/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| NEtFOSAA | 3/6/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFBA | 3/6/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| NFDHA | 3/6/2023 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFEESA | 3/6/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFPeA | 3/6/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 8:2 FTS | 3/6/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 4:2 FTS | 3/6/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 6:2 FTS | 3/6/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFTrDA | 3/6/2023 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| HFPO-DA | 3/6/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFBS | 3/6/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFUnA | 3/6/2023 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| ADONA | 3/6/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 9Cl-PF3ONS | 3/6/2023 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| 11Cl-PF3OUdS | 3/6/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFHxA | 3/6/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDoA | 3/6/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDA | 3/6/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFOA | 3/6/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOS | 3/6/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFHxS | 3/6/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NEtFOSAA | 3/6/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFNA | 3/6/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFEESA | 3/6/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| lithium | 3/6/2023 | 39.0000 µg/L | 9 µg/L | Detected |
| NMeFOSAA | 3/6/2023 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| PFTrDA | 3/6/2023 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| PFHpA | 3/6/2023 | <0.003 µg/L | 0.003 µg/L | Not 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.