PFAS Comply

YARMOUTH WATER DISTRICT

PWSID: ME0091670 · YARMOUTH, ME · Serving 8,000 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

PFOA9.2 ppt(MCL: 4 ppt)

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

Detection summary

5
PFAS compounds detected
9.8 ppt
Highest single detection
2025-04-15
Latest sample date
complete
Data completeness

All PFAS detection results

Source: EPA UCMR5 (UCMR5)

ContaminantResult (ppt)MCL (ppt)StatusSample date
PFPeSND—Below MRL2025-10-07
ADONAND—Below MRL2025-04-15
9Cl-PF3ONSND—Below MRL2025-04-15
11Cl-PF3OUdSND—Below MRL2025-04-15
PFUnAND—Below MRL2025-04-15
PFHxAND—Below MRL2025-04-15
PFDoAND—Below MRL2025-04-15
PFDAND—Below MRL2025-04-15
PFOAND4Below MRL2025-04-15
PFBSND—Below MRL2025-04-15
PFNAND10Below MRL2025-04-15
PFHpAND—Below MRL2025-04-15
NMeFOSAAND—Below MRL2025-04-15
HFPO-DAND10Below MRL2025-04-15
PFOSND4Below MRL2025-04-15
PFBAND—Below MRL2025-04-15
6:2 FTSND—Below MRL2025-04-15
4:2 FTSND—Below MRL2025-04-15
8:2 FTSND—Below MRL2025-04-15
PFMPAND—Below MRL2025-04-15
PFPeAND—Below MRL2025-04-15
PFMBAND—Below MRL2025-04-15
PFEESAND—Below MRL2025-04-15
NFDHAND—Below MRL2025-04-15
PFPeSND—Below MRL2025-04-15
PFHpSND—Below MRL2025-04-15
lithiumND—Below MRL2025-04-15
PFTAND—Below MRL2025-04-15
NEtFOSAAND—Below MRL2025-04-15
PFTrDAND—Below MRL2025-04-15
NEtFOSAAND—Below MRL2025-04-15
PFDAND—Below MRL2025-04-15
PFOAND4Below MRL2025-04-15
PFOSND4Below MRL2025-04-15
PFNAND10Below MRL2025-04-15
PFHxSND10Below MRL2025-04-15
PFHpAND—Below MRL2025-04-15
PFBSND—Below MRL2025-04-15
NMeFOSAAND—Below MRL2025-04-15
PFDoAND—Below MRL2025-04-15
PFTAND—Below MRL2025-04-15
PFTrDAND—Below MRL2025-04-15
lithiumND—Below MRL2025-04-15
PFPeAND—Below MRL2025-04-15
PFHxAND—Below MRL2025-04-15
PFHpSND—Below MRL2025-04-15
PFPeSND—Below MRL2025-04-15
NFDHAND—Below MRL2025-04-15
PFEESAND—Below MRL2025-04-15
PFMBAND—Below MRL2025-04-15
PFMPAND—Below MRL2025-04-15
8:2 FTSND—Below MRL2025-04-15
HFPO-DAND10Below MRL2025-04-15
PFUnAND—Below MRL2025-04-15
11Cl-PF3OUdSND—Below MRL2025-04-15
ADONAND—Below MRL2025-04-15
4:2 FTSND—Below MRL2025-04-15
PFBAND—Below MRL2025-04-15
6:2 FTSND—Below MRL2025-04-15
9Cl-PF3ONSND—Below MRL2025-04-15
HFPO-DAND10Below MRL2025-10-07
PFHpAND—Below MRL2025-10-07
PFHxSND10Below MRL2025-10-07
PFNAND10Below MRL2025-10-07
PFBAND—Below MRL2025-10-07
PFOAND4Below MRL2025-10-07
lithiumND—Below MRL2025-10-07
PFHxAND—Below MRL2025-10-07
PFOSND4Below MRL2025-10-07
11Cl-PF3OUdSND—Below MRL2025-10-07
ADONAND—Below MRL2025-10-07
9Cl-PF3ONSND—Below MRL2025-10-07
PFUnAND—Below MRL2025-10-07
PFBSND—Below MRL2025-10-07
PFDoAND—Below MRL2025-10-07
PFTrDAND—Below MRL2025-10-07
PFDAND—Below MRL2025-10-07
PFHpSND—Below MRL2025-10-07
NEtFOSAAND—Below MRL2025-10-07
PFTAND—Below MRL2025-10-07
6:2 FTSND—Below MRL2025-10-07
4:2 FTSND—Below MRL2025-10-07
PFMPAND—Below MRL2025-10-07
PFPeAND—Below MRL2025-10-07
PFMBAND—Below MRL2025-10-07
PFEESAND—Below MRL2025-10-07
PFPeSND—Below MRL2025-10-07
8:2 FTSND—Below MRL2025-10-07
NMeFOSAAND—Below MRL2025-10-07
NFDHAND—Below MRL2025-10-07
PFMBAND—Below MRL2025-04-15
ADONAND—Below MRL2025-04-15
HFPO-DAND10Below MRL2025-04-15
lithiumND—Below MRL2025-10-07
PFEESAND—Below MRL2025-10-07
PFMBAND—Below MRL2025-10-07
PFPeAND—Below MRL2025-10-07
PFMPAND—Below MRL2025-10-07
8:2 FTSND—Below MRL2025-10-07
4:2 FTSND—Below MRL2025-10-07
6:2 FTSND—Below MRL2025-10-07
PFBAND—Below MRL2025-10-07
PFHxSND10Below MRL2025-04-15
6:2 FTSND—Below MRL2025-04-15
4:2 FTSND—Below MRL2025-04-15
8:2 FTSND—Below MRL2025-04-15
PFEESAND—Below MRL2025-04-15
9Cl-PF3ONSND—Below MRL2025-04-15
PFBSND—Below MRL2025-04-15
NFDHAND—Below MRL2025-04-15
PFPeSND—Below MRL2025-04-15
PFMPAND—Below MRL2025-04-15
11Cl-PF3OUdSND—Below MRL2025-04-15
PFUnAND—Below MRL2025-04-15
PFTAND—Below MRL2025-04-15
PFDAND—Below MRL2025-04-15
PFOSND4Below MRL2025-04-15
PFHxSND10Below MRL2025-04-15
lithiumND—Below MRL2025-04-15
NMeFOSAAND—Below MRL2025-04-15
NEtFOSAAND—Below MRL2025-04-15
PFTrDAND—Below MRL2025-04-15
PFDoAND—Below MRL2025-04-15
PFHpSND—Below MRL2025-04-15
PFNAND10Below MRL2025-04-15
PFDoAND—Below MRL2025-10-07
PFOSND4Below MRL2025-10-07
PFNAND10Below MRL2025-10-07
PFUnAND—Below MRL2025-10-07
PFHpSND—Below MRL2025-10-07
PFHxSND10Below MRL2025-10-07
PFDAND—Below MRL2025-10-07
PFTAND—Below MRL2025-10-07
PFTrDAND—Below MRL2025-10-07
NEtFOSAAND—Below MRL2025-10-07
NMeFOSAAND—Below MRL2025-10-07
lithiumND—Below MRL2025-10-07
8:2 FTSND—Below MRL2025-10-07
PFPeSND—Below MRL2025-10-07
NFDHAND—Below MRL2025-10-07
PFBSND—Below MRL2025-10-07
11Cl-PF3OUdSND—Below MRL2025-10-07
PFMBAND—Below MRL2025-10-07
PFMPAND—Below MRL2025-10-07
PFEESAND—Below MRL2025-10-07
4:2 FTSND—Below MRL2025-10-07
6:2 FTSND—Below MRL2025-10-07
HFPO-DAND10Below MRL2025-10-07
ADONAND—Below MRL2025-10-07
9Cl-PF3ONSND—Below MRL2025-10-07
8:2 FTSND—Below MRL2025-04-15
lithiumND—Below MRL2025-04-15
NMeFOSAAND—Below MRL2025-04-15
NEtFOSAAND—Below MRL2025-04-15
PFTrDAND—Below MRL2025-04-15
PFTAND—Below MRL2025-04-15
PFMPAND—Below MRL2025-04-15
PFPeAND—Below MRL2025-04-15
NFDHAND—Below MRL2025-04-15
PFEESAND—Below MRL2025-04-15
PFPeSND—Below MRL2025-04-15
PFHxAND—Below MRL2025-04-15
PFMBAND—Below MRL2025-04-15
ADONAND—Below MRL2025-04-15
4:2 FTSND—Below MRL2025-04-15
6:2 FTSND—Below MRL2025-04-15
PFDAND—Below MRL2025-04-15
HFPO-DAND10Below MRL2025-04-15
PFHpSND—Below MRL2025-04-15
9Cl-PF3ONSND—Below MRL2025-04-15
11Cl-PF3OUdSND—Below MRL2025-04-15
PFUnAND—Below MRL2025-04-15
PFDoAND—Below MRL2025-04-15
PFOAND4Below MRL2025-04-15
PFOSND4Below MRL2025-04-15
PFNAND10Below MRL2025-04-15
PFHxSND10Below MRL2025-04-15
PFHpAND—Below MRL2025-04-15
PFBSND—Below MRL2025-04-15
PFBAND—Below MRL2025-04-15
9Cl-PF3ONSND—Below MRL2025-10-07
PFHxAND—Below MRL2025-10-07
PFDAND—Below MRL2025-10-07
PFOAND4Below MRL2025-10-07
PFOSND4Below MRL2025-10-07
PFNAND10Below MRL2025-10-07
PFHxSND10Below MRL2025-10-07
PFHpAND—Below MRL2025-10-07
ADONAND—Below MRL2025-10-07
PFUnAND—Below MRL2025-10-07
11Cl-PF3OUdSND—Below MRL2025-10-07
PFBSND—Below MRL2025-10-07
NFDHAND—Below MRL2025-10-07
NMeFOSAAND—Below MRL2025-10-07
NEtFOSAAND—Below MRL2025-10-07
PFTrDAND—Below MRL2025-10-07
PFDoAND—Below MRL2025-10-07
PFTAND—Below MRL2025-10-07
HFPO-DAND10Below MRL2025-10-07
PFHpSND—Below MRL2025-10-07
PFHxA9.8—2025-04-15
PFOA9.24Exceeds2025-10-07
PFPeA8.9—2025-04-15
PFHxA8.1—2025-10-07
PFPeA7.1—2025-10-07
PFOA7.14Exceeds2025-04-15
PFBA6.8—2025-04-15
PFBA5.7—2025-10-07
PFHpA4.5—2025-10-07
PFHpA4.5—2025-04-15

Next steps