PlainWater

ARLINGTON HIGH SCHOOL

PWS ID: NY1319317 · LAGRANGEVILLE, New York 12540

PFAS Detected

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

Population Served
3,050
Total Violations
80
Health-Based Violations
6
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Local
Connections
1
County
Dutchess
School/Daycare
Yes
MCL Violations
0
Monitoring Violations
66
Treatment Tech Violations
6

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Lead and Copper Rule TT 6 2022
Lead and Copper Rule MR 6 2007
Endrin MR 2 2007
Toxaphene MR 2 2007
Di(2-ethylhexyl) adipate MR 2 2007
Simazine MR 2 2007
Di(2-ethylhexyl) phthalate MR 2 2007
Picloram MR 2 2007
Dinoseb MR 2 2007
Aldicarb sulfoxide MR 2 2007
Aldicarb sulfone MR 2 2007
Aldicarb MR 2 2007
Atrazine MR 2 2007
LASSO MR 2 2007
2,4-D MR 2 2007
Benzo(a)pyrene MR 2 2007
Pentachlorophenol MR 2 2007
Chlordane MR 2 2007
Coliform (TCR) MR 2 2008
Methoxychlor MR 2 2007
Heptachlor epoxide MR 2 2007
Nitrate MR 2 2007
Hexachlorocyclopentadiene MR 2 2007
2,4,5-TP MR 2 2007
ETHYLENE DIBROMIDE MR 2 2007
Carbofuran MR 2 2007
OXAMYL MR 2 2007
Total Polychlorinated Biphenyls (PCB) MR 2 2007
Heptachlor MR 2 2007
HEXACHLOROBENZENE MR 2 2007

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 2 of 60 samples detected PFAS.

Contaminant Date Result MRL Status
NFDHA 8/15/2023 <0.02 µg/L 0.02 µg/L Not Detected
PFPeA 8/15/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHpS 8/15/2023 <0.003 µg/L 0.003 µg/L Not Detected
NMeFOSAA 8/15/2023 <0.006 µg/L 0.006 µg/L Not Detected
PFEESA 8/15/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 8/15/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFNA 8/15/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFUnA 8/15/2023 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 8/15/2023 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 8/15/2023 <0.002 µg/L 0.002 µg/L Not Detected
ADONA 8/15/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 8/15/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 8/15/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 8/15/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 8/15/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 8/15/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFTrDA 8/15/2023 <0.007 µg/L 0.007 µg/L Not Detected
HFPO-DA 8/15/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 8/15/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFHxS 8/15/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 8/15/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 8/15/2023 <0.003 µg/L 0.003 µg/L Not Detected
NEtFOSAA 8/15/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFTA 8/15/2023 <0.008 µg/L 0.008 µg/L Not Detected
lithium 8/15/2023 31.4000 µg/L 9 µg/L Detected
PFBA 8/15/2023 <0.005 µg/L 0.005 µg/L Not Detected
6:2 FTS 8/15/2023 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 8/15/2023 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 8/15/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFOS 8/15/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFTrDA 2/15/2023 <0.007 µg/L 0.007 µg/L Not Detected
PFBA 2/15/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFOS 2/15/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFDA 2/15/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 2/15/2023 <0.004 µg/L 0.004 µg/L Not Detected
HFPO-DA 2/15/2023 <0.005 µg/L 0.005 µg/L Not Detected
ADONA 2/15/2023 <0.003 µg/L 0.003 µg/L Not Detected
lithium 2/15/2023 33.9000 µg/L 9 µg/L Detected
PFNA 2/15/2023 <0.004 µg/L 0.004 µg/L Not Detected
NEtFOSAA 2/15/2023 <0.005 µg/L 0.005 µg/L Not Detected
8:2 FTS 2/15/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFTA 2/15/2023 <0.008 µg/L 0.008 µg/L Not Detected
9Cl-PF3ONS 2/15/2023 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 2/15/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 2/15/2023 <0.002 µg/L 0.002 µg/L Not Detected
PFHxA 2/15/2023 <0.003 µg/L 0.003 µg/L Not Detected
NMeFOSAA 2/15/2023 <0.006 µg/L 0.006 µg/L Not Detected
4:2 FTS 2/15/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 2/15/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 2/15/2023 <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.