PlainWater
States → Pennsylvania

AQUA PA MAIN SYSTEM

PWS ID: PA1460073 · BRYN MAWR, Pennsylvania 19010

PFAS Detected

10 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.

Population Served
822,600
Total Violations
453
Health-Based Violations
19
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Private
Connections
304,127
County
Montgomery
School/Daycare
No
MCL Violations
10
Monitoring Violations
428
Treatment Tech Violations
9

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
2,3,7,8-TCDD MR 30 2020
Total Polychlorinated Biphenyls (PCB) MR 30 2020
Chromium MR 12 2024
CYANIDE MR 12 2024
Fluoride MR 12 2024
Nickel MR 12 2024
Selenium MR 12 2024
Antimony, Total MR 12 2024
Thallium, Total MR 12 2024
Di(2-ethylhexyl) phthalate MR 12 2014
Barium MR 12 2024
Mercury MR 12 2024
Cadmium MR 12 2024
Beryllium, Total MR 11 2024
Chlorite MR 9 2025
Gross Alpha, Excl. Radon and U MR 8 2023
Arsenic MR 8 2024
Coliform (TCR) MCL 6 2013
Public Notice Other 6 2024
Dinoseb MR 6 2014
2,4,5-TP MR 6 2014
Interim Enhanced Surface Water Treatment Rule MR 6 2010
Dalapon MR 6 2014
Total Haloacetic Acids (HAA5) MR 5 2015
Surface Water Treatment Rule TT 5 1992
TTHM MR 5 2015
BHC-GAMMA MR 4 2014
OXAMYL MR 4 2014
Simazine MR 4 2014
Picloram MR 4 2014

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 227 of 1500 samples detected PFAS.

Contaminant Date Result MRL Status
PFHpA 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 9/25/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 9/25/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOA 9/25/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFDA 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 9/25/2024 0.0052 µg/L 0.003 µg/L Detected
PFUnA 9/25/2024 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 9/25/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFBS 9/25/2024 0.0042 µg/L 0.003 µg/L Detected
HFPO-DA 9/25/2024 <0.005 µg/L 0.005 µg/L Not Detected
ADONA 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 9/25/2024 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 9/25/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 9/25/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 9/25/2024 0.0068 µg/L 0.003 µg/L Detected
PFMBA 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 9/25/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFPeS 9/25/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHpS 9/25/2024 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 9/25/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFBA 9/25/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFEESA 9/10/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFBA 9/10/2024 <0.005 µg/L 0.005 µg/L Not Detected
6:2 FTS 9/10/2024 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 9/10/2024 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 9/10/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 9/10/2024 <0.004 µg/L 0.004 µg/L Not Detected
HFPO-DA 9/10/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFMBA 9/10/2024 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 9/10/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFPeS 9/10/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHpS 9/10/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 9/10/2024 0.0044 µg/L 0.003 µg/L Detected
PFHxS 9/10/2024 0.0077 µg/L 0.003 µg/L Detected
ADONA 9/10/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 9/10/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 9/10/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 9/10/2024 0.0050 µg/L 0.004 µg/L Detected
PFOA 9/10/2024 0.0049 µg/L 0.004 µg/L Detected
PFDA 9/10/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 9/10/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 9/10/2024 0.0044 µg/L 0.003 µg/L Detected
PFUnA 9/10/2024 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 9/10/2024 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 9/10/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFBS 9/10/2024 0.0042 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.