PFAS Comply

OSSINING WATER DEPARTMENT

PWSID: NY5903451 · OSSINING, NY · Serving 30,000 people

Type: CWSOwner: LSource: SW
Settlement eligible
May qualify for 3M/DuPont settlement funds
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Exceeds MCL

One or more PFAS compounds exceed EPA Maximum Contaminant Levels. Corrective action required by 2031.

Key contaminants vs MCL

PFOA4.3 ppt(MCL: 4 ppt)

EPA MCL: 4 ppt (parts per trillion) for PFOA and PFOS individually. Compliance deadline: 2031-12-31

Detection summary

1
PFAS compounds detected
4.3 ppt
Highest single detection
2023-09-19
Latest sample date
partial
Data completeness

All PFAS detection results

Source: EPA UCMR5 (UCMR5)

ContaminantResult (ppt)MCL (ppt)StatusSample date
PFDAND—Below MRL2024-01-17
PFHpAND—Below MRL2023-03-07
PFHpSND—Below MRL2023-03-07
NMeFOSAAND—Below MRL2023-03-07
lithiumND—Below MRL2023-03-07
9Cl-PF3ONSND—Below MRL2023-03-07
PFPeSND—Below MRL2023-03-07
PFEESAND—Below MRL2023-03-07
PFMBAND—Below MRL2023-03-07
PFPeAND—Below MRL2023-03-07
PFHxSND10Below MRL2023-03-07
PFBSND—Below MRL2023-03-07
8:2 FTSND—Below MRL2023-03-07
4:2 FTSND—Below MRL2023-03-07
6:2 FTSND—Below MRL2023-03-07
PFBAND—Below MRL2023-03-07
PFOSND4Below MRL2023-03-07
PFTrDAND—Below MRL2023-03-07
PFMPAND—Below MRL2023-03-07
PFTAND—Below MRL2023-03-07
PFUnAND—Below MRL2023-03-07
PFNAND10Below MRL2023-03-07
NEtFOSAAND—Below MRL2023-03-07
PFOAND4Below MRL2023-03-07
PFDAND—Below MRL2023-03-07
PFDoAND—Below MRL2023-03-07
PFHxAND—Below MRL2023-03-07
11Cl-PF3OUdSND—Below MRL2023-03-07
ADONAND—Below MRL2023-03-07
NFDHAND—Below MRL2023-03-07
PFMPAND—Below MRL2023-06-12
PFNAND10Below MRL2023-06-12
NFDHAND—Below MRL2023-06-12
PFPeAND—Below MRL2023-06-12
PFMBAND—Below MRL2023-06-12
PFEESAND—Below MRL2023-06-12
PFHpSND—Below MRL2023-06-12
PFTAND—Below MRL2023-06-12
PFTrDAND—Below MRL2023-06-12
NMeFOSAAND—Below MRL2023-06-12
lithiumND—Below MRL2023-06-12
PFHxSND10Below MRL2023-06-12
PFBAND—Below MRL2023-06-12
NEtFOSAAND—Below MRL2023-06-12
PFHxAND—Below MRL2023-06-12
PFOAND4Below MRL2023-06-12
PFDAND—Below MRL2023-06-12
8:2 FTSND—Below MRL2023-06-12
PFDoAND—Below MRL2023-06-12
PFHpAND—Below MRL2023-06-12
PFUnAND—Below MRL2023-06-12
11Cl-PF3OUdSND—Below MRL2023-06-12
9Cl-PF3ONSND—Below MRL2023-06-12
PFOSND4Below MRL2023-06-12
HFPO-DAND10Below MRL2023-06-12
6:2 FTSND—Below MRL2023-06-12
PFPeSND—Below MRL2023-06-12
4:2 FTSND—Below MRL2023-06-12
PFBSND—Below MRL2023-06-12
ADONAND—Below MRL2023-06-12
PFMBAND—Below MRL2023-10-24
PFEESAND—Below MRL2023-10-24
NFDHAND—Below MRL2023-10-24
PFHxAND—Below MRL2023-10-24
PFPeSND—Below MRL2023-10-24
PFHpSND—Below MRL2023-10-24
PFHxSND10Below MRL2023-10-24
PFDoAND—Below MRL2023-10-24
PFTrDAND—Below MRL2023-10-24
PFDAND—Below MRL2023-10-24
PFPeAND—Below MRL2023-10-24
PFNAND10Below MRL2023-10-24
lithiumND—Below MRL2023-09-19
PFOAND4Below MRL2023-10-24
PFUnAND—Below MRL2023-10-24
11Cl-PF3OUdSND—Below MRL2023-10-24
NMeFOSAAND—Below MRL2023-10-24
NEtFOSAAND—Below MRL2023-10-24
PFBSND—Below MRL2023-10-24
PFMPAND—Below MRL2023-10-24
PFOSND4Below MRL2023-10-24
PFTAND—Below MRL2023-10-24
9Cl-PF3ONSND—Below MRL2023-10-24
ADONAND—Below MRL2023-10-24
HFPO-DAND10Below MRL2023-10-24
PFBAND—Below MRL2023-10-24
6:2 FTSND—Below MRL2023-10-24
4:2 FTSND—Below MRL2023-10-24
8:2 FTSND—Below MRL2023-10-24
PFHpAND—Below MRL2023-10-24
PFMPAND—Below MRL2024-01-17
PFPeAND—Below MRL2024-01-17
PFEESAND—Below MRL2024-01-17
PFBAND—Below MRL2024-01-17
PFMBAND—Below MRL2024-01-17
8:2 FTSND—Below MRL2024-01-17
NFDHAND—Below MRL2024-01-17
6:2 FTSND—Below MRL2024-01-17
NEtFOSAAND—Below MRL2023-12-05
PFHxAND—Below MRL2024-01-17
PFUnAND—Below MRL2024-01-17
11Cl-PF3OUdSND—Below MRL2024-01-17
HFPO-DAND10Below MRL2024-01-17
ADONAND—Below MRL2024-01-17
4:2 FTSND—Below MRL2024-01-17
9Cl-PF3ONSND—Below MRL2024-01-17
lithiumND—Below MRL2023-12-05
PFHxSND10Below MRL2024-01-17
PFNAND10Below MRL2024-01-17
PFOSND4Below MRL2024-01-17
HFPO-DAND10Below MRL2023-03-07
PFTAND—Below MRL2023-12-05
PFDoAND—Below MRL2024-01-17
PFPeSND—Below MRL2024-01-17
NMeFOSAAND—Below MRL2023-12-05
PFTrDAND—Below MRL2023-12-05
PFHpAND—Below MRL2024-01-17
PFBSND—Below MRL2024-01-17
PFHpSND—Below MRL2024-01-17
PFOA4.34Exceeds2024-01-17

Violation history

Monitoring & Reporting - PFOA(PFOA)
2015-01-01 · Resolved · Tier 3
Monitoring & Reporting - PFOS(PFOS)
2015-01-01 · Resolved · Tier 3
Monitoring & Reporting - PFHxS(PFHxS)
2015-01-01 · Resolved · Tier 3
Monitoring & Reporting - HFPO-DA (GenX)(HFPO-DA (GenX))
2015-01-01 · Resolved · Tier 3
Monitoring & Reporting - PFNA(PFNA)
2015-01-01 · Resolved · Tier 3
Monitoring & Reporting - PFBS(PFBS)
2015-01-01 · Resolved · Tier 3
Monitoring & Reporting - Hazard Index PFAS(Hazard Index PFAS)
2015-01-01 · Resolved · Tier 3
Monitoring & Reporting - PFHxA(PFHxA)
2015-01-01 · Resolved · Tier 3
Monitoring & Reporting - Hazard Index PFAS(Hazard Index PFAS)
2015-01-01 · Resolved · Tier 3

Next steps