KENNETT SQUARE MUN WATER WORKS
PWS ID: PA1150108 · KENNETT SQUARE, Pennsylvania 19348
PFAS Detected
8 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
Population Served
6,328
Total Violations
653
Health-Based Violations
8
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 1,885
- County
- Chester
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 465
- Treatment Tech Violations
- 8
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Public Notice | Other | 142 | 2024 |
| Surface Water Treatment Rule | MR | 51 | 2025 |
| Groundwater Rule | MR | 45 | 2025 |
| Nitrate | MR | 38 | 2023 |
| Consumer Confidence Rule | Other | 29 | 2024 |
| Nitrite | MR | 25 | 2023 |
| Chlorine | MR | 22 | 2025 |
| TTHM | MR | 20 | 2025 |
| Total Haloacetic Acids (HAA5) | MR | 17 | 2025 |
| Coliform (TCR) | MR | 9 | 2013 |
| 1,2,4-Trichlorobenzene | MR | 9 | 2022 |
| cis-1,2-Dichloroethylene | MR | 9 | 2022 |
| Xylenes, Total | MR | 9 | 2022 |
| 1,1-Dichloroethylene | MR | 9 | 2022 |
| 1,2-Dichloroethane | MR | 9 | 2022 |
| 1,1,1-Trichloroethane | MR | 9 | 2022 |
| Trichloroethylene | MR | 9 | 2022 |
| Tetrachloroethylene | MR | 9 | 2022 |
| Benzene | MR | 9 | 2022 |
| Toluene | MR | 9 | 2022 |
| Ethylbenzene | MR | 9 | 2022 |
| DICHLOROMETHANE | MR | 9 | 2022 |
| o-Dichlorobenzene | MR | 9 | 2022 |
| 1,1,2-Trichloroethane | MR | 9 | 2022 |
| CHLOROBENZENE | MR | 9 | 2022 |
| Styrene | MR | 9 | 2022 |
| p-Dichlorobenzene | MR | 9 | 2022 |
| Carbon tetrachloride | MR | 9 | 2022 |
| 1,2-Dichloropropane | MR | 9 | 2022 |
| trans-1,2-Dichloroethylene | MR | 9 | 2022 |
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 27 of 360 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| PFMBA | 7/5/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 6:2 FTS | 7/5/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 4:2 FTS | 7/5/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 8:2 FTS | 7/5/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFMPA | 7/5/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFPeA | 7/5/2023 | 0.0039 µg/L | 0.003 µg/L | Detected |
| PFEESA | 7/5/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NFDHA | 7/5/2023 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFPeS | 7/5/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFHpS | 7/5/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFBA | 7/5/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFDA | 7/5/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFNA | 7/5/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFBS | 7/5/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxA | 7/5/2023 | 0.0035 µg/L | 0.003 µg/L | Detected |
| PFHxS | 7/5/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| HFPO-DA | 7/5/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFOS | 7/5/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOA | 7/5/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFDoA | 7/5/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFUnA | 7/5/2023 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| 11Cl-PF3OUdS | 7/5/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 9Cl-PF3ONS | 7/5/2023 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| ADONA | 7/5/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpA | 7/5/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 11Cl-PF3OUdS | 7/5/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFNA | 7/5/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOS | 7/5/2023 | 0.0092 µg/L | 0.004 µg/L | Detected |
| PFOA | 7/5/2023 | 0.0149 µg/L | 0.004 µg/L | Detected |
| PFDA | 7/5/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDoA | 7/5/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFUnA | 7/5/2023 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| ADONA | 7/5/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 9Cl-PF3ONS | 7/5/2023 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFHxS | 7/5/2023 | 0.0033 µg/L | 0.003 µg/L | Detected |
| PFEESA | 7/5/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 6:2 FTS | 7/5/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFBA | 7/5/2023 | 0.0169 µg/L | 0.005 µg/L | Detected |
| HFPO-DA | 7/5/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFHxA | 7/5/2023 | 0.0095 µg/L | 0.003 µg/L | Detected |
| PFPeS | 7/5/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFPeA | 7/5/2023 | 0.0108 µg/L | 0.003 µg/L | Detected |
| PFHpS | 7/5/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpA | 7/5/2023 | 0.0066 µg/L | 0.003 µg/L | Detected |
| NFDHA | 7/5/2023 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFMBA | 7/5/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMPA | 7/5/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| 8:2 FTS | 7/5/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 4:2 FTS | 7/5/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFBS | 7/5/2023 | 0.0041 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.