PlainWater

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.