HARVARD
PWS ID: IL1110250 · HARVARD, Illinois 60033
Population Served
9,469
Total Violations
79
Health-Based Violations
8
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 2,809
- County
- McHenry
- School/Daycare
- No
- MCL Violations
- 6
- Monitoring Violations
- 47
- Treatment Tech Violations
- 2
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 8 | 2004 |
| Coliform (TCR) | MCL | 6 | 1994 |
| Arsenic | MR | 4 | 1986 |
| Barium | MR | 4 | 1986 |
| Chromium | MR | 4 | 1986 |
| Fluoride | MR | 4 | 1986 |
| Cadmium | MR | 4 | 1986 |
| Nitrate | MR | 4 | 1986 |
| Chlorine | MR | 4 | 2004 |
| Mercury | MR | 4 | 1986 |
| Selenium | MR | 4 | 1986 |
| Lead and Copper Rule | TT | 2 | 1992 |
| Lead and Copper Rule | MR | 2 | 2006 |
| Consumer Confidence Rule | Other | 2 | 2013 |
| Gross Alpha, Excl. Radon and U | MR | 1 | 1977 |
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 180 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| 11Cl-PF3OUdS | 7/7/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFUnA | 7/7/2025 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFHxA | 7/7/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDoA | 7/7/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDA | 7/7/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NEtFOSAA | 7/7/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFOS | 7/7/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| NMeFOSAA | 7/7/2025 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| PFHxS | 7/7/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 9Cl-PF3ONS | 7/7/2025 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFBS | 7/7/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMBA | 7/7/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| lithium | 7/7/2025 | <9 µg/L | 9 µg/L | Not Detected |
| PFHpA | 7/7/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| ADONA | 7/7/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| HFPO-DA | 7/7/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFBA | 7/7/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 6:2 FTS | 7/7/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 4:2 FTS | 7/7/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 8:2 FTS | 7/7/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFPeA | 7/7/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFEESA | 7/7/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NFDHA | 7/7/2025 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFPeS | 7/7/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFHpS | 7/7/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFTrDA | 7/7/2025 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| PFTA | 7/7/2025 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| PFNA | 7/7/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFMPA | 7/7/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOA | 7/7/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFTA | 7/7/2025 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| PFUnA | 7/7/2025 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFHxA | 7/7/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDoA | 7/7/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDA | 7/7/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFOA | 7/7/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOS | 7/7/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFNA | 7/7/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFHpA | 7/7/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| ADONA | 7/7/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFTrDA | 7/7/2025 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| NMeFOSAA | 7/7/2025 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| PFBS | 7/7/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| lithium | 7/7/2025 | <9 µg/L | 9 µg/L | Not Detected |
| PFHxS | 7/7/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 9Cl-PF3ONS | 7/7/2025 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| NEtFOSAA | 7/7/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| HFPO-DA | 7/7/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFBA | 7/7/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 6:2 FTS | 7/7/2025 | <0.005 µg/L | 0.005 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.