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States → Pennsylvania

STEWARTSTOWN BORO WATER AUTH

PWS ID: PA7670062 · STEWARTSTOWN, Pennsylvania 17363

PFAS Detected

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

Population Served
5,206
Total Violations
575
Health-Based Violations
10
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
1,880
County
York
School/Daycare
No
MCL Violations
7
Monitoring Violations
559
Treatment Tech Violations
3

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Nitrate MR 74 2022
Nitrite MR 62 2022
Cadmium MR 20 2020
Chromium MR 20 2020
CYANIDE MR 20 2020
Mercury MR 20 2020
Nickel MR 20 2020
Antimony, Total MR 20 2020
Beryllium, Total MR 20 2020
Arsenic MR 20 2020
Selenium MR 20 2020
Thallium, Total MR 20 2020
Barium MR 20 2020
Fluoride MR 20 2020
Groundwater Rule MR 17 2021
2,3,7,8-TCDD MR 16 2020
Surface Water Treatment Rule MR 13 2017
Chlorine MR 12 2017
1,2,4-Trichlorobenzene MR 6 2021
cis-1,2-Dichloroethylene MR 6 2021
Coliform (TCR) MCL 5 2008
TTHM MR 5 2015
Xylenes, Total MR 5 2021
o-Dichlorobenzene MR 5 2021
p-Dichlorobenzene MR 5 2021
1,1-Dichloroethylene MR 5 2021
trans-1,2-Dichloroethylene MR 5 2021
Carbon tetrachloride MR 5 2021
Tetrachloroethylene MR 5 2021
CHLOROBENZENE MR 5 2021

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 24 of 360 samples detected PFAS.

Contaminant Date Result MRL Status
NMeFOSAA 9/19/2023 <0.006 µg/L 0.006 µg/L Not Detected
PFEESA 9/19/2023 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 9/19/2023 <0.02 µg/L 0.02 µg/L Not Detected
PFPeS 9/19/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFHpS 9/19/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFTA 9/19/2023 <0.008 µg/L 0.008 µg/L Not Detected
NEtFOSAA 9/19/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 9/19/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 9/19/2023 0.0045 µg/L 0.003 µg/L Detected
PFTrDA 9/19/2023 <0.007 µg/L 0.007 µg/L Not Detected
PFNA 9/19/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFMBA 9/19/2023 <0.003 µg/L 0.003 µg/L Not Detected
lithium 9/19/2023 <9 µg/L 9 µg/L Not Detected
PFBS 9/19/2023 0.0035 µg/L 0.003 µg/L Detected
PFHxS 9/19/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFOS 9/19/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFOA 9/19/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFDA 9/19/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 9/19/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 9/19/2023 0.0032 µg/L 0.003 µg/L Detected
PFBA 9/19/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFHpA 9/19/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 9/19/2023 <0.002 µg/L 0.002 µg/L Not Detected
4:2 FTS 9/19/2023 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 9/19/2023 <0.005 µg/L 0.005 µg/L Not Detected
6:2 FTS 9/19/2023 <0.005 µg/L 0.005 µg/L Not Detected
HFPO-DA 9/19/2023 <0.005 µg/L 0.005 µg/L Not Detected
ADONA 9/19/2023 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 9/19/2023 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 9/19/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFOS 9/19/2023 <0.004 µg/L 0.004 µg/L Not Detected
9Cl-PF3ONS 9/19/2023 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 9/19/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 9/19/2023 <0.002 µg/L 0.002 µg/L Not Detected
PFHxA 9/19/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 9/19/2023 <0.003 µg/L 0.003 µg/L Not Detected
ADONA 9/19/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 9/19/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFHpA 9/19/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 9/19/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFHxS 9/19/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFTrDA 9/19/2023 <0.007 µg/L 0.007 µg/L Not Detected
PFBS 9/19/2023 <0.003 µg/L 0.003 µg/L Not Detected
lithium 9/19/2023 <9 µg/L 9 µg/L Not Detected
PFDA 9/19/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHpS 9/19/2023 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 9/19/2023 <0.005 µg/L 0.005 µg/L Not Detected
NEtFOSAA 9/19/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFTA 9/19/2023 <0.008 µg/L 0.008 µg/L Not Detected
PFPeS 9/19/2023 <0.004 µg/L 0.004 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.