PFAS Comply

COUPEVILLE TOWN OF

PWSID: WA5315550 · Coupeville, WA · Serving 4,077 people

Type: CWSOwner: LSource: GW
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

PFOA9.8 ppt(MCL: 4 ppt)

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

Detection summary

7
PFAS compounds detected
17 ppt
Highest single detection
2025-08-20
Latest sample date
complete
Data completeness

All PFAS detection results

Source: EPA UCMR5 (UCMR5)

ContaminantResult (ppt)MCL (ppt)StatusSample date
PFPeSND—Below MRL2025-08-20
PFMBAND—Below MRL2025-03-10
6:2 FTSND—Below MRL2025-03-10
4:2 FTSND—Below MRL2025-08-20
NEtFOSAAND—Below MRL2025-08-20
PFHpSND—Below MRL2025-08-20
NFDHAND—Below MRL2025-08-20
PFEESAND—Below MRL2025-08-20
8:2 FTSND—Below MRL2025-08-20
PFMBAND—Below MRL2025-08-20
PFMPAND—Below MRL2025-08-20
PFOSND4Below MRL2025-03-10
HFPO-DAND10Below MRL2025-03-10
ADONAND—Below MRL2025-03-10
9Cl-PF3ONSND—Below MRL2025-03-10
11Cl-PF3OUdSND—Below MRL2025-03-10
PFUnAND—Below MRL2025-03-10
PFDoAND—Below MRL2025-03-10
PFHpSND—Below MRL2025-03-10
PFDAND—Below MRL2025-03-10
PFPeSND—Below MRL2025-03-10
4:2 FTSND—Below MRL2025-03-10
PFEESAND—Below MRL2025-03-10
PFOAND4Below MRL2025-03-10
PFMPAND—Below MRL2025-03-10
8:2 FTSND—Below MRL2025-03-10
PFNAND10Below MRL2025-03-10
PFHxSND10Below MRL2025-03-10
PFHpAND—Below MRL2025-03-10
PFBSND—Below MRL2025-03-10
lithiumND—Below MRL2025-07-08
NMeFOSAAND—Below MRL2025-03-10
NEtFOSAAND—Below MRL2025-03-10
PFTrDAND—Below MRL2025-03-10
PFTAND—Below MRL2025-03-10
NFDHAND—Below MRL2025-03-10
ADONAND—Below MRL2025-08-20
lithiumND—Below MRL2025-08-20
PFTAND—Below MRL2025-08-20
PFDAND—Below MRL2025-08-20
PFTrDAND—Below MRL2025-08-20
PFDoAND—Below MRL2025-08-20
PFUnAND—Below MRL2025-08-20
9Cl-PF3ONSND—Below MRL2025-08-20
HFPO-DAND10Below MRL2025-08-20
PFBAND—Below MRL2025-08-20
6:2 FTSND—Below MRL2025-08-20
NMeFOSAAND—Below MRL2025-08-20
PFNAND10Below MRL2025-08-20
11Cl-PF3OUdSND—Below MRL2025-08-20
PFOSND4Below MRL2025-08-20
PFHxA17—2025-08-20
PFPeA12—2025-08-20
PFPeA11—2025-03-10
PFOA9.84Exceeds2025-08-20
PFBS6.7—2025-08-20
PFHxA5.9—2025-03-10
PFBA5.3—2025-03-10
PFHxS3.810Detected2025-08-20
PFHpA3.3—2025-08-20

Next steps