AQUA PA UWCHLAN
PWS ID: PA1150035 · BRYN MAWR, Pennsylvania 19010
PFAS Detected
6 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
Population Served
35,518
Total Violations
237
Health-Based Violations
0
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 16,600
- County
- Chester
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 229
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Di(2-ethylhexyl) adipate | MR | 33 | 1996 |
| Benzo(a)pyrene | MR | 33 | 1996 |
| Di(2-ethylhexyl) phthalate | MR | 33 | 1996 |
| Pentachlorophenol | MR | 33 | 1996 |
| Hexachlorocyclopentadiene | MR | 33 | 1996 |
| CYANIDE | MR | 12 | 2000 |
| Nitrate | MR | 10 | 2001 |
| Fluoride | MR | 5 | 1996 |
| Chlorine | MR | 4 | 2017 |
| Revised Total Coliform Rule | MON | 4 | 2017 |
| Surface Water Treatment Rule | MR | 4 | 2017 |
| Arsenic | MR | 2 | 1985 |
| Chromium | MR | 2 | 1985 |
| Selenium | MR | 2 | 1985 |
| Endrin | MR | 2 | 1985 |
| Methoxychlor | MR | 2 | 1985 |
| 2,4-D | MR | 2 | 1985 |
| 2,4,5-TP | MR | 2 | 1985 |
| Cadmium | MR | 2 | 1985 |
| Mercury | MR | 2 | 1985 |
| Barium | MR | 2 | 1985 |
| Toxaphene | MR | 2 | 1985 |
| BHC-GAMMA | MR | 2 | 1985 |
| Consumer Confidence Rule | Other | 1 | 2001 |
| Groundwater Rule | MR | 1 | 2020 |
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 45 of 480 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| 4:2 FTS | 8/13/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| ADONA | 8/13/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| HFPO-DA | 8/13/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFBA | 8/13/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 6:2 FTS | 8/13/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 9Cl-PF3ONS | 8/13/2024 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFMPA | 8/13/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFMBA | 8/13/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 11Cl-PF3OUdS | 8/13/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| NFDHA | 8/13/2024 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| 8:2 FTS | 8/13/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFPeS | 8/13/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFHpS | 8/13/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFEESA | 8/13/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFPeA | 8/13/2024 | 0.0051 µg/L | 0.003 µg/L | Detected |
| PFUnA | 8/13/2024 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFBS | 8/13/2024 | 0.0040 µg/L | 0.003 µg/L | Detected |
| PFHpA | 8/13/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxS | 8/13/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFNA | 8/13/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOS | 8/13/2024 | 0.0050 µg/L | 0.004 µg/L | Detected |
| PFOA | 8/13/2024 | 0.0062 µg/L | 0.004 µg/L | Detected |
| PFDA | 8/13/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxA | 8/13/2024 | 0.0052 µg/L | 0.003 µg/L | Detected |
| PFDoA | 8/13/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| ADONA | 7/29/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 6:2 FTS | 7/29/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFOA | 7/29/2024 | 0.0053 µg/L | 0.004 µg/L | Detected |
| 9Cl-PF3ONS | 7/29/2024 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFBA | 7/29/2024 | 0.0057 µg/L | 0.005 µg/L | Detected |
| PFUnA | 7/29/2024 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFHxA | 7/29/2024 | 0.0067 µg/L | 0.003 µg/L | Detected |
| PFDoA | 7/29/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDA | 7/29/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFBS | 7/29/2024 | 0.0051 µg/L | 0.003 µg/L | Detected |
| PFPeA | 7/29/2024 | 0.0077 µg/L | 0.003 µg/L | Detected |
| 11Cl-PF3OUdS | 7/29/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| HFPO-DA | 7/29/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 8:2 FTS | 7/29/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 4:2 FTS | 7/29/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMBA | 7/29/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFEESA | 7/29/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NFDHA | 7/29/2024 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFPeS | 7/29/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFHpS | 7/29/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMPA | 7/29/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFNA | 7/29/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFHpA | 7/29/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxS | 7/29/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NEtFOSAA | 7/29/2024 | <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.