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States → Pennsylvania

PA AMERICAN WATER CO WEST

PWS ID: PA7210029 · MECHANICSBURG, Pennsylvania 17055

PFAS Detected

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

Population Served
105,127
Total Violations
24
Health-Based Violations
3
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Public/Private
Connections
41,820
County
Cumberland
School/Daycare
No
MCL Violations
0
Monitoring Violations
17
Treatment Tech Violations
3

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Interim Enhanced Surface Water Treatment Rule MR 4 2019
Total Haloacetic Acids (HAA5) MR 4 2022
TTHM MR 4 2022
Surface Water Treatment Rule TT 3 1993
Stage 2 Disinfectants and Disinfection Byproducts Rule MR 2 2009
CARBON, TOTAL MR 2 2016
Gross Alpha, Excl. Radon and U MR 1 1976

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 6 of 240 samples detected PFAS.

Contaminant Date Result MRL Status
4:2 FTS 7/1/2024 <0.003 µg/L 0.003 µg/L Not Detected
lithium 7/1/2024 <9 µg/L 9 µg/L Not Detected
NEtFOSAA 7/1/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFTrDA 7/1/2024 <0.007 µg/L 0.007 µg/L Not Detected
PFTA 7/1/2024 <0.008 µg/L 0.008 µg/L Not Detected
PFHpS 7/1/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 7/1/2024 <0.004 µg/L 0.004 µg/L Not Detected
NFDHA 7/1/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFEESA 7/1/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 7/1/2024 0.0034 µg/L 0.003 µg/L Detected
PFMPA 7/1/2024 <0.004 µg/L 0.004 µg/L Not Detected
6:2 FTS 7/1/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 7/1/2024 <0.005 µg/L 0.005 µg/L Not Detected
NMeFOSAA 7/1/2024 <0.006 µg/L 0.006 µg/L Not Detected
ADONA 7/1/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 7/1/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 7/1/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHxS 7/1/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 7/1/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 7/1/2024 0.0032 µg/L 0.003 µg/L Detected
9Cl-PF3ONS 7/1/2024 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 7/1/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 7/1/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFHxA 7/1/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 7/1/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 7/1/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 7/1/2024 0.0049 µg/L 0.004 µg/L Detected
PFOS 7/1/2024 0.0104 µg/L 0.004 µg/L Detected
HFPO-DA 7/1/2024 <0.005 µg/L 0.005 µg/L Not Detected
8:2 FTS 7/1/2024 <0.005 µg/L 0.005 µg/L Not Detected
NFDHA 7/1/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFPeS 7/1/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHxS 7/1/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFTA 7/1/2024 <0.008 µg/L 0.008 µg/L Not Detected
PFTrDA 7/1/2024 <0.007 µg/L 0.007 µg/L Not Detected
NEtFOSAA 7/1/2024 <0.005 µg/L 0.005 µg/L Not Detected
NMeFOSAA 7/1/2024 <0.006 µg/L 0.006 µg/L Not Detected
PFDoA 7/1/2024 <0.003 µg/L 0.003 µg/L Not Detected
lithium 7/1/2024 <9 µg/L 9 µg/L Not Detected
PFHpA 7/1/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 7/1/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 7/1/2024 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 7/1/2024 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 7/1/2024 <0.002 µg/L 0.002 µg/L Not Detected
ADONA 7/1/2024 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 7/1/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFHpS 7/1/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 7/1/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 7/1/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFBA 7/1/2024 <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.