AQUA PA CHALFONT
PWS ID: PA1090005 · BRYN MAWR, Pennsylvania 19010
PFAS Detected
9 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
Population Served
5,900
Total Violations
116
Health-Based Violations
8
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 2,491
- County
- Bucks
- School/Daycare
- No
- MCL Violations
- 2
- Monitoring Violations
- 101
- Treatment Tech Violations
- 6
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Nitrate | MR | 9 | 1994 |
| Public Notice | Other | 6 | 2019 |
| Groundwater Rule | TT | 6 | 2019 |
| Radium-226 | MR | 4 | 2023 |
| Radium-228 | MR | 4 | 2023 |
| Toxaphene | MR | 3 | 1988 |
| Methoxychlor | MR | 3 | 1988 |
| Endrin | MR | 3 | 1988 |
| Fluoride | MR | 3 | 1988 |
| BHC-GAMMA | MR | 3 | 1988 |
| Chromium | MR | 3 | 1988 |
| Cadmium | MR | 3 | 1988 |
| Barium | MR | 3 | 1988 |
| 2,4-D | MR | 3 | 1988 |
| Selenium | MR | 3 | 1988 |
| Mercury | MR | 3 | 1988 |
| 2,4,5-TP | MR | 3 | 1988 |
| Lead and Copper Rule | MR | 3 | 1997 |
| Arsenic | MR | 3 | 1988 |
| 1,2,4-Trichlorobenzene | MR | 2 | 2000 |
| cis-1,2-Dichloroethylene | MR | 2 | 2000 |
| Xylenes, Total | MR | 2 | 2000 |
| p-Dichlorobenzene | MR | 2 | 2000 |
| trans-1,2-Dichloroethylene | MR | 2 | 2000 |
| 1,2-Dichloroethane | MR | 2 | 2000 |
| Carbon tetrachloride | MR | 2 | 2000 |
| Tetrachloroethylene | MR | 2 | 2000 |
| Toluene | MR | 2 | 2000 |
| Gross Alpha, Excl. Radon and U | MR | 2 | 2005 |
| Tetrachloroethylene | MCL | 2 | 1998 |
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 27 of 180 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| PFHxS | 8/19/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpA | 8/19/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFBS | 8/19/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFNA | 8/19/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFPeS | 8/19/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFTrDA | 8/19/2024 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| NFDHA | 8/19/2024 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFEESA | 8/19/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NMeFOSAA | 8/19/2024 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| NEtFOSAA | 8/19/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| ADONA | 8/19/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFTA | 8/19/2024 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| PFHpS | 8/19/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 4:2 FTS | 8/19/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFOS | 8/19/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| HFPO-DA | 8/19/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 6:2 FTS | 8/19/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 8:2 FTS | 8/19/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFMPA | 8/19/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFPeA | 8/19/2024 | 0.0047 µg/L | 0.003 µg/L | Detected |
| PFMBA | 8/19/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 9Cl-PF3ONS | 8/19/2024 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| 11Cl-PF3OUdS | 8/19/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFUnA | 8/19/2024 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFHxA | 8/19/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDoA | 8/19/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDA | 8/19/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| lithium | 8/19/2024 | 9.1500 µg/L | 9 µg/L | Detected |
| PFBA | 8/19/2024 | 0.0090 µg/L | 0.005 µg/L | Detected |
| PFOA | 8/19/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFTrDA | 8/19/2024 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| NMeFOSAA | 8/19/2024 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| PFTA | 8/19/2024 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| PFOA | 8/19/2024 | 0.0074 µg/L | 0.004 µg/L | Detected |
| NEtFOSAA | 8/19/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFHpS | 8/19/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFBS | 8/19/2024 | 0.0053 µg/L | 0.003 µg/L | Detected |
| PFHpA | 8/19/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxS | 8/19/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFOS | 8/19/2024 | 0.0066 µg/L | 0.004 µg/L | Detected |
| lithium | 8/19/2024 | <9 µg/L | 9 µg/L | Not Detected |
| PFDA | 8/19/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDoA | 8/19/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxA | 8/19/2024 | 0.0037 µg/L | 0.003 µg/L | Detected |
| PFUnA | 8/19/2024 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| 11Cl-PF3OUdS | 8/19/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFPeA | 8/19/2024 | 0.0040 µg/L | 0.003 µg/L | Detected |
| NFDHA | 8/19/2024 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFNA | 8/19/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| 9Cl-PF3ONS | 8/19/2024 | <0.002 µg/L | 0.002 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.