PlainWater
States → Pennsylvania

MERCK AND CO INC

PWS ID: PA1461065 · WEST POINT, Pennsylvania 19486

PFAS Detected

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

Population Served
8,550
Total Violations
70
Health-Based Violations
0
Water Source
Surface Water

System Details

System Type
Non-Transient Non-Community
Owner Type
Private
Connections
1
County
Montgomery
School/Daycare
No
MCL Violations
0
Monitoring Violations
69
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Surface Water Treatment Rule MR 4 2025
Dalapon MR 4 2022
Chlorine MR 4 2025
Coliform (TCR) MR 3 1995
Endrin MR 2 2020
BHC-GAMMA MR 2 2020
Methoxychlor MR 2 2020
Diquat MR 2 2020
LASSO MR 2 2020
2,3,7,8-TCDD MR 2 2020
Heptachlor MR 2 2020
2,4-D MR 2 2020
Benzo(a)pyrene MR 2 2020
Pentachlorophenol MR 2 2020
Total Polychlorinated Biphenyls (PCB) MR 2 2020
Chlordane MR 2 2020
Dinoseb MR 2 2020
Atrazine MR 2 2020
Toxaphene MR 2 2020
HEXACHLOROBENZENE MR 2 2020
Carbofuran MR 2 2020
ETHYLENE DIBROMIDE MR 2 2020
Di(2-ethylhexyl) phthalate MR 2 2020
2,4,5-TP MR 2 2020
Hexachlorocyclopentadiene MR 2 2020
Heptachlor epoxide MR 2 2020
1,2-DIBROMO-3-CHLOROPROPANE MR 2 2020
Di(2-ethylhexyl) adipate MR 2 2020
OXAMYL MR 2 2020
Simazine MR 2 2020

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 7 of 120 samples detected PFAS.

Contaminant Date Result MRL Status
PFHpS 9/16/2024 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 9/16/2024 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 9/16/2024 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 9/16/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 9/16/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 9/16/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 9/16/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 9/16/2024 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 9/16/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFTA 9/16/2024 <0.008 µg/L 0.008 µg/L Not Detected
NMeFOSAA 9/16/2024 <0.006 µg/L 0.006 µg/L Not Detected
9Cl-PF3ONS 9/16/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFBA 9/16/2024 0.0053 µg/L 0.005 µg/L Detected
PFTrDA 9/16/2024 <0.007 µg/L 0.007 µg/L Not Detected
NEtFOSAA 9/16/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFPeS 9/16/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHpA 9/16/2024 <0.003 µg/L 0.003 µg/L Not Detected
11Cl-PF3OUdS 9/16/2024 <0.005 µg/L 0.005 µg/L Not Detected
HFPO-DA 9/16/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFBS 9/16/2024 <0.003 µg/L 0.003 µg/L Not Detected
lithium 9/16/2024 13.4000 µg/L 9 µg/L Detected
PFHxS 9/16/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 9/16/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 9/16/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOA 9/16/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFDA 9/16/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 9/16/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 9/16/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 9/16/2024 <0.002 µg/L 0.002 µg/L Not Detected
ADONA 9/16/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 6/17/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFBA 6/17/2024 0.0052 µg/L 0.005 µg/L Detected
HFPO-DA 6/17/2024 <0.005 µg/L 0.005 µg/L Not Detected
ADONA 6/17/2024 <0.003 µg/L 0.003 µg/L Not Detected
11Cl-PF3OUdS 6/17/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFHxA 6/17/2024 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 6/17/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFDA 6/17/2024 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 6/17/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFOS 6/17/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFNA 6/17/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHxS 6/17/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 6/17/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 6/17/2024 <0.003 µg/L 0.003 µg/L Not Detected
lithium 6/17/2024 18.9000 µg/L 9 µg/L Detected
PFDoA 6/17/2024 <0.003 µg/L 0.003 µg/L Not Detected
NEtFOSAA 6/17/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 6/17/2024 <0.002 µg/L 0.002 µg/L Not Detected
NMeFOSAA 6/17/2024 <0.006 µg/L 0.006 µg/L Not Detected
4:2 FTS 6/17/2024 <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.