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States → Pennsylvania

CITY OF LANCASTER

PWS ID: PA7360058 · LANCASTER, Pennsylvania 17603

PFAS Detected

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

Population Served
120,000
Total Violations
168
Health-Based Violations
17
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
49,376
County
Lancaster
School/Daycare
No
MCL Violations
7
Monitoring Violations
145
Treatment Tech Violations
10

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Surface Water Treatment Rule MR 10 2025
Surface Water Treatment Rule TT 9 1996
cis-1,2-Dichloroethylene MR 6 2011
Xylenes, Total MR 6 2011
o-Dichlorobenzene MR 6 2011
p-Dichlorobenzene MR 6 2011
1,1-Dichloroethylene MR 6 2011
trans-1,2-Dichloroethylene MR 6 2011
Carbon tetrachloride MR 6 2011
1,2-Dichloropropane MR 6 2011
Trichloroethylene MR 6 2011
1,1,2-Trichloroethane MR 6 2011
Tetrachloroethylene MR 6 2011
Toluene MR 6 2011
Ethylbenzene MR 6 2011
1,2,4-Trichlorobenzene MR 6 2011
DICHLOROMETHANE MR 6 2011
1,1,1-Trichloroethane MR 6 2011
Styrene MR 6 2011
1,2-Dichloroethane MR 6 2011
Benzene MR 6 2011
CHLOROBENZENE MR 6 2011
TTHM MCL 4 2024
Total Haloacetic Acids (HAA5) MCL 3 2016
Nitrate MR 2 2010
Consumer Confidence Rule Other 1 2001
38-STRONTIUM-90 MR 1 1983
Lead and Copper Rule TT 1 1995
Chromium MR 1 1984
Selenium MR 1 1984

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 23 of 240 samples detected PFAS.

Contaminant Date Result MRL Status
PFPeA 9/5/2024 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 9/5/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFTA 9/5/2024 <0.008 µg/L 0.008 µg/L Not Detected
PFTrDA 9/5/2024 <0.007 µg/L 0.007 µg/L Not Detected
NEtFOSAA 9/5/2024 <0.005 µg/L 0.005 µg/L Not Detected
NMeFOSAA 9/5/2024 <0.006 µg/L 0.006 µg/L Not Detected
PFBS 9/5/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 9/5/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 9/5/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 9/5/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 9/5/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOA 9/5/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFDA 9/5/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 9/5/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 9/5/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFPeS 9/5/2024 <0.004 µg/L 0.004 µg/L Not Detected
ADONA 9/5/2024 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 9/5/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 9/5/2024 <0.005 µg/L 0.005 µg/L Not Detected
6:2 FTS 9/5/2024 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 9/5/2024 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 9/5/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 9/5/2024 <0.004 µg/L 0.004 µg/L Not Detected
11Cl-PF3OUdS 9/5/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFMBA 9/5/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpS 9/5/2024 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 9/5/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFDoA 9/5/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 9/5/2024 <0.003 µg/L 0.003 µg/L Not Detected
lithium 9/5/2024 <9 µg/L 9 µg/L Not Detected
PFBS 9/5/2024 0.0098 µg/L 0.003 µg/L Detected
PFUnA 9/5/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFDoA 9/5/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 9/5/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 9/5/2024 0.0238 µg/L 0.004 µg/L Detected
PFOS 9/5/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFNA 9/5/2024 <0.004 µg/L 0.004 µg/L Not Detected
lithium 9/5/2024 <9 µg/L 9 µg/L Not Detected
PFHpA 9/5/2024 0.0081 µg/L 0.003 µg/L Detected
PFBA 9/5/2024 0.0154 µg/L 0.005 µg/L Detected
9Cl-PF3ONS 9/5/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFHxS 9/5/2024 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 9/5/2024 <0.02 µg/L 0.02 µg/L Not Detected
NMeFOSAA 9/5/2024 <0.006 µg/L 0.006 µg/L Not Detected
NEtFOSAA 9/5/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFTrDA 9/5/2024 <0.007 µg/L 0.007 µg/L Not Detected
PFHxA 9/5/2024 0.0288 µg/L 0.003 µg/L Detected
HFPO-DA 9/5/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFTA 9/5/2024 <0.008 µg/L 0.008 µg/L Not Detected
ADONA 9/5/2024 <0.003 µg/L 0.003 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.