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States → Pennsylvania

PA AMERICAN AUDUBON

PWS ID: PA1460055 · NORRISTOWN, Pennsylvania 19403

PFAS Detected

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

Population Served
8,200
Total Violations
5,456
Health-Based Violations
23
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Private
Connections
2,759
County
Montgomery
School/Daycare
No
MCL Violations
23
Monitoring Violations
5,120
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Public Notice Other 276 2024
Endothall MR 93 2024
Carbon tetrachloride MR 91 2023
1,2-Dichloroethane MR 89 2023
1,1,1-Trichloroethane MR 89 2023
Trichloroethylene MR 89 2023
p-Dichlorobenzene MR 89 2023
1,1-Dichloroethylene MR 89 2023
Atrazine MR 88 2023
Di(2-ethylhexyl) phthalate MR 88 2023
cis-1,2-Dichloroethylene MR 86 2023
DICHLOROMETHANE MR 86 2023
o-Dichlorobenzene MR 86 2023
trans-1,2-Dichloroethylene MR 86 2023
Benzene MR 86 2023
1,2,4-Trichlorobenzene MR 86 2023
1,2-Dichloropropane MR 86 2023
Xylenes, Total MR 86 2023
BHC-GAMMA MR 86 2023
Methoxychlor MR 86 2023
Di(2-ethylhexyl) adipate MR 85 2023
Hexachlorocyclopentadiene MR 85 2023
LASSO MR 85 2023
Simazine MR 85 2023
Benzo(a)pyrene MR 85 2023
1,1,2-Trichloroethane MR 84 2023
Tetrachloroethylene MR 84 2023
CHLOROBENZENE MR 84 2023
Toluene MR 84 2023
Ethylbenzene MR 84 2023

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 97 of 480 samples detected PFAS.

Contaminant Date Result MRL Status
PFOA 9/30/2024 0.0161 µg/L 0.004 µg/L Detected
PFHpA 9/30/2024 0.0079 µg/L 0.003 µg/L Detected
PFMPA 9/30/2024 <0.004 µg/L 0.004 µg/L Not Detected
8:2 FTS 9/30/2024 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 9/30/2024 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 9/30/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 9/30/2024 0.0066 µg/L 0.005 µg/L Detected
HFPO-DA 9/30/2024 <0.005 µg/L 0.005 µg/L Not Detected
ADONA 9/30/2024 <0.003 µg/L 0.003 µg/L Not Detected
NEtFOSAA 9/30/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFDA 9/30/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 9/30/2024 0.0044 µg/L 0.003 µg/L Detected
lithium 9/30/2024 11.8000 µg/L 9 µg/L Detected
PFBS 9/30/2024 0.0040 µg/L 0.003 µg/L Detected
NFDHA 9/30/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFDoA 9/30/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFTA 9/30/2024 <0.008 µg/L 0.008 µg/L Not Detected
NMeFOSAA 9/30/2024 <0.006 µg/L 0.006 µg/L Not Detected
PFMBA 9/30/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFTrDA 9/30/2024 <0.007 µg/L 0.007 µg/L Not Detected
PFNA 9/30/2024 0.0063 µg/L 0.004 µg/L Detected
PFHpS 9/30/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 9/30/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFEESA 9/30/2024 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 9/30/2024 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 9/30/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 9/30/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFHxA 9/30/2024 0.0109 µg/L 0.003 µg/L Detected
PFPeA 9/30/2024 0.0133 µg/L 0.003 µg/L Detected
PFOS 9/30/2024 0.0075 µg/L 0.004 µg/L Detected
PFBA 9/30/2024 0.0059 µg/L 0.005 µg/L Detected
11Cl-PF3OUdS 9/30/2024 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 9/30/2024 <0.002 µg/L 0.002 µg/L Not Detected
ADONA 9/30/2024 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 9/30/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFHxA 9/30/2024 0.0080 µg/L 0.003 µg/L Detected
6:2 FTS 9/30/2024 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 9/30/2024 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 9/30/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 9/30/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 9/30/2024 0.0092 µg/L 0.003 µg/L Detected
PFEESA 9/30/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 9/30/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 9/30/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFMBA 9/30/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFTrDA 9/30/2024 <0.007 µg/L 0.007 µg/L Not Detected
PFUnA 9/30/2024 <0.002 µg/L 0.002 µg/L Not Detected
lithium 9/30/2024 20.8000 µg/L 9 µg/L Detected
PFDA 9/30/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFTA 9/30/2024 <0.008 µg/L 0.008 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.