PFAS Comply

DEDHAM WESTWOOD WATER DIST.

PWSID: MA3073000 · DEDHAM, MA · Serving 41,630 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

PFOA6.5 ppt(MCL: 4 ppt)
PFOS5.1 ppt(MCL: 4 ppt)

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

Detection summary

4
PFAS compounds detected
6.5 ppt
Highest single detection
2025-07-15
Latest sample date
partial
Data completeness

All PFAS detection results

Source: EPA UCMR5 (UCMR5)

ContaminantResult (ppt)MCL (ppt)StatusSample date
PFOSND4Below MRL2025-07-15
PFHxSND10Below MRL2025-01-13
6:2 FTSND—Below MRL2025-01-13
4:2 FTSND—Below MRL2025-01-13
8:2 FTSND—Below MRL2025-01-13
HFPO-DAND10Below MRL2025-01-13
PFPeAND—Below MRL2025-01-13
ADONAND—Below MRL2025-01-13
lithiumND—Below MRL2025-01-13
PFTAND—Below MRL2025-01-13
PFTrDAND—Below MRL2025-01-13
NEtFOSAAND—Below MRL2025-01-13
NMeFOSAAND—Below MRL2025-01-13
PFEESAND—Below MRL2025-01-13
PFMPAND—Below MRL2025-01-13
PFDoAND—Below MRL2025-01-13
PFHpAND—Below MRL2025-01-13
PFBSND—Below MRL2025-01-13
PFNAND10Below MRL2025-01-13
PFOSND4Below MRL2025-01-13
PFBAND—Below MRL2025-01-13
PFDAND—Below MRL2025-01-13
PFHxAND—Below MRL2025-01-13
PFUnAND—Below MRL2025-01-13
11Cl-PF3OUdSND—Below MRL2025-01-13
PFHpSND—Below MRL2025-01-13
PFPeSND—Below MRL2025-01-13
NFDHAND—Below MRL2025-01-13
9Cl-PF3ONSND—Below MRL2025-01-13
PFOAND4Below MRL2025-01-13
PFMPAND—Below MRL2025-04-07
lithiumND—Below MRL2025-04-07
6:2 FTSND—Below MRL2025-04-07
PFTAND—Below MRL2025-04-07
PFOAND4Below MRL2025-04-07
PFDAND—Below MRL2025-04-07
PFDoAND—Below MRL2025-04-07
PFHxAND—Below MRL2025-04-07
PFUnAND—Below MRL2025-04-07
11Cl-PF3OUdSND—Below MRL2025-04-07
9Cl-PF3ONSND—Below MRL2025-04-07
ADONAND—Below MRL2025-04-07
HFPO-DAND10Below MRL2025-04-07
NMeFOSAAND—Below MRL2025-04-07
4:2 FTSND—Below MRL2025-04-07
PFTrDAND—Below MRL2025-04-07
8:2 FTSND—Below MRL2025-04-07
PFPeSND—Below MRL2025-04-07
PFPeAND—Below MRL2025-04-07
PFMBAND—Below MRL2025-04-07
NEtFOSAAND—Below MRL2025-04-07
NFDHAND—Below MRL2025-04-07
PFOSND4Below MRL2025-04-07
PFHpSND—Below MRL2025-04-07
PFBSND—Below MRL2025-04-07
PFHpAND—Below MRL2025-04-07
PFHxSND10Below MRL2025-04-07
PFNAND10Below MRL2025-04-07
PFBAND—Below MRL2025-04-07
PFEESAND—Below MRL2025-04-07
PFOAND4Below MRL2025-07-15
HFPO-DAND10Below MRL2025-07-15
ADONAND—Below MRL2025-07-15
9Cl-PF3ONSND—Below MRL2025-07-15
lithiumND—Below MRL2025-07-15
11Cl-PF3OUdSND—Below MRL2025-07-15
NMeFOSAAND—Below MRL2025-07-15
NEtFOSAAND—Below MRL2025-07-15
PFTrDAND—Below MRL2025-07-15
PFTAND—Below MRL2025-07-15
PFPeSND—Below MRL2025-07-15
PFPeAND—Below MRL2025-07-15
PFNAND10Below MRL2025-07-15
PFMPAND—Below MRL2025-07-15
PFBAND—Below MRL2025-07-15
PFHxAND—Below MRL2025-07-15
PFDoAND—Below MRL2025-07-15
PFEESAND—Below MRL2025-07-15
6:2 FTSND—Below MRL2025-07-15
4:2 FTSND—Below MRL2025-07-15
PFMBAND—Below MRL2025-07-15
PFDAND—Below MRL2025-07-15
NFDHAND—Below MRL2025-07-15
PFHpSND—Below MRL2025-07-15
PFOSND4Below MRL2025-07-15
PFHxSND10Below MRL2025-07-15
PFUnAND—Below MRL2025-07-15
PFBSND—Below MRL2025-07-15
PFHpAND—Below MRL2025-07-15
8:2 FTSND—Below MRL2025-07-15
PFMPAND—Below MRL2025-10-16
NEtFOSAAND—Below MRL2025-10-16
PFMBAND—Below MRL2025-10-16
NMeFOSAAND—Below MRL2025-10-16
NFDHAND—Below MRL2025-10-16
PFPeSND—Below MRL2025-10-16
PFTAND—Below MRL2025-10-16
6:2 FTSND—Below MRL2025-10-16
PFPeAND—Below MRL2025-10-16
lithiumND—Below MRL2025-10-16
PFTrDAND—Below MRL2025-10-16
PFHpSND—Below MRL2025-10-16
PFNAND10Below MRL2025-10-16
PFHxAND—Below MRL2025-10-16
PFBAND—Below MRL2025-10-16
PFBSND—Below MRL2025-10-16
PFEESAND—Below MRL2025-10-16
PFHxSND10Below MRL2025-10-16
PFOSND4Below MRL2025-10-16
PFOAND4Below MRL2025-10-16
4:2 FTSND—Below MRL2025-10-16
PFDAND—Below MRL2025-10-16
PFDoAND—Below MRL2025-10-16
HFPO-DAND10Below MRL2025-10-16
PFUnAND—Below MRL2025-10-16
11Cl-PF3OUdSND—Below MRL2025-10-16
9Cl-PF3ONSND—Below MRL2025-10-16
8:2 FTSND—Below MRL2025-10-16
PFHpAND—Below MRL2025-10-16
ADONAND—Below MRL2025-10-16
PFBSND—Below MRL2025-01-13
PFDoAND—Below MRL2025-01-13
PFTAND—Below MRL2025-07-15
PFHxAND—Below MRL2025-07-15
11Cl-PF3OUdSND—Below MRL2025-07-15
9Cl-PF3ONSND—Below MRL2025-07-15
ADONAND—Below MRL2025-07-15
PFTrDAND—Below MRL2025-07-15
lithiumND—Below MRL2025-07-15
NEtFOSAAND—Below MRL2025-07-15
PFBSND—Below MRL2025-07-15
PFMBAND—Below MRL2025-01-13
PFNAND10Below MRL2025-01-13
PFHpAND—Below MRL2025-01-13
HFPO-DAND10Below MRL2025-01-13
PFHxSND10Below MRL2025-01-13
lithiumND—Below MRL2025-01-13
NMeFOSAAND—Below MRL2025-01-13
NEtFOSAAND—Below MRL2025-01-13
PFTrDAND—Below MRL2025-01-13
PFTAND—Below MRL2025-01-13
PFHpSND—Below MRL2025-01-13
PFPeSND—Below MRL2025-01-13
NFDHAND—Below MRL2025-01-13
9Cl-PF3ONSND—Below MRL2025-01-13
PFMBAND—Below MRL2025-01-13
PFUnAND—Below MRL2025-01-13
PFMPAND—Below MRL2025-01-13
8:2 FTSND—Below MRL2025-01-13
4:2 FTSND—Below MRL2025-01-13
6:2 FTSND—Below MRL2025-01-13
PFBAND—Below MRL2025-01-13
PFDAND—Below MRL2025-01-13
ADONAND—Below MRL2025-01-13
11Cl-PF3OUdSND—Below MRL2025-01-13
PFEESAND—Below MRL2025-01-13
PFTrDAND—Below MRL2025-07-15
4:2 FTSND—Below MRL2025-07-15
PFBAND—Below MRL2025-07-15
HFPO-DAND10Below MRL2025-07-15
ADONAND—Below MRL2025-07-15
9Cl-PF3ONSND—Below MRL2025-07-15
11Cl-PF3OUdSND—Below MRL2025-07-15
PFUnAND—Below MRL2025-07-15
PFMPAND—Below MRL2025-07-15
NEtFOSAAND—Below MRL2025-07-15
8:2 FTSND—Below MRL2025-07-15
PFTAND—Below MRL2025-07-15
PFHpSND—Below MRL2025-07-15
PFPeSND—Below MRL2025-07-15
NFDHAND—Below MRL2025-07-15
PFEESAND—Below MRL2025-07-15
PFMBAND—Below MRL2025-07-15
lithiumND—Below MRL2025-07-15
NMeFOSAAND—Below MRL2025-07-15
PFNAND10Below MRL2025-07-15
PFHxAND—Below MRL2025-07-15
PFDoAND—Below MRL2025-07-15
PFDAND—Below MRL2025-07-15
6:2 FTSND—Below MRL2025-07-15
PFHxSND10Below MRL2025-07-15
PFHpAND—Below MRL2025-07-15
PFBSND—Below MRL2025-07-15
PFTAND—Below MRL2025-01-13
PFNAND10Below MRL2025-01-13
PFHxSND10Below MRL2025-01-13
NMeFOSAAND—Below MRL2025-01-13
PFDAND—Below MRL2025-01-13
lithiumND—Below MRL2025-01-13
PFTrDAND—Below MRL2025-01-13
PFHpSND—Below MRL2025-01-13
PFPeSND—Below MRL2025-01-13
NFDHAND—Below MRL2025-01-13
PFBSND—Below MRL2025-01-13
PFEESAND—Below MRL2025-01-13
NEtFOSAAND—Below MRL2025-01-13
4:2 FTSND—Below MRL2025-01-13
PFHpAND—Below MRL2025-01-13
PFDoAND—Below MRL2025-01-13
PFPeAND—Below MRL2025-01-13
8:2 FTSND—Below MRL2025-01-13
PFMBAND—Below MRL2025-01-13
6:2 FTSND—Below MRL2025-01-13
PFBAND—Below MRL2025-01-13
ADONAND—Below MRL2025-01-13
9Cl-PF3ONSND—Below MRL2025-01-13
11Cl-PF3OUdSND—Below MRL2025-01-13
PFUnAND—Below MRL2025-01-13
HFPO-DAND10Below MRL2025-01-13
PFMPAND—Below MRL2025-01-13
PFHxAND—Below MRL2025-01-13
4:2 FTSND—Below MRL2025-07-15
PFEESAND—Below MRL2025-07-15
PFPeSND—Below MRL2025-07-15
PFMBAND—Below MRL2025-07-15
PFMPAND—Below MRL2025-07-15
PFDoAND—Below MRL2025-07-15
PFHpAND—Below MRL2025-07-15
NMeFOSAAND—Below MRL2025-07-15
8:2 FTSND—Below MRL2025-07-15
PFHxSND10Below MRL2025-07-15
PFNAND10Below MRL2025-07-15
NFDHAND—Below MRL2025-07-15
PFHpSND—Below MRL2025-07-15
HFPO-DAND10Below MRL2025-07-15
6:2 FTSND—Below MRL2025-07-15
PFUnAND—Below MRL2025-07-15
PFDAND—Below MRL2025-07-15
PFPeAND—Below MRL2025-07-15
PFBAND—Below MRL2025-07-15
PFOA6.54Exceeds2025-01-13
PFOA6.14Exceeds2025-01-13
PFOA64Exceeds2025-07-15
PFPeA5.9—2025-01-13
PFOS5.14Exceeds2025-07-15
PFOS54Exceeds2025-01-13
PFOA4.74Exceeds2025-07-15
PFHxA4.1—2025-01-13
PFOS44Detected2025-01-13
PFPeA3.9—2025-07-15

Next steps