PFAS Comply

FOXBORO WATER DEPARTMENT

PWSID: MA4099000 · FOXBOROUGH, MA · Serving 18,639 people

Type: CWSOwner: LSource: GW
Settlement eligible
May qualify for 3M/DuPont settlement funds
Check claims portal →
Exceeds MCL

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

Key contaminants vs MCL

PFOA6.3 ppt(MCL: 4 ppt)
PFOS6.7 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
6.7 ppt
Highest single detection
2025-09-03
Latest sample date
complete
Data completeness

All PFAS detection results

Source: EPA UCMR5 (UCMR5)

ContaminantResult (ppt)MCL (ppt)StatusSample date
PFEESAND—Below MRL2025-09-03
NMeFOSAAND—Below MRL2025-02-11
PFHxAND—Below MRL2025-02-11
PFDAND—Below MRL2025-02-11
PFNAND10Below MRL2025-02-11
11Cl-PF3OUdSND—Below MRL2025-02-11
ADONAND—Below MRL2025-02-11
PFUnAND—Below MRL2025-02-11
PFMBAND—Below MRL2025-09-03
NFDHAND—Below MRL2025-09-03
4:2 FTSND—Below MRL2025-09-03
PFHxAND—Below MRL2025-09-03
PFDoAND—Below MRL2025-09-03
PFDAND—Below MRL2025-09-03
PFNAND10Below MRL2025-09-03
lithiumND—Below MRL2025-09-03
PFHpAND—Below MRL2025-09-03
PFHpSND—Below MRL2025-09-03
PFPeSND—Below MRL2025-09-03
NMeFOSAAND—Below MRL2025-09-03
NEtFOSAAND—Below MRL2025-09-03
PFTrDAND—Below MRL2025-09-03
PFTAND—Below MRL2025-09-03
PFHxSND10Below MRL2025-09-03
HFPO-DAND10Below MRL2025-02-11
PFBAND—Below MRL2025-02-11
PFHxSND10Below MRL2025-02-11
PFHpAND—Below MRL2025-02-11
PFBSND—Below MRL2025-02-11
lithiumND—Below MRL2025-02-11
NFDHAND—Below MRL2025-02-11
NEtFOSAAND—Below MRL2025-02-11
PFTrDAND—Below MRL2025-02-11
PFTAND—Below MRL2025-02-11
PFDoAND—Below MRL2025-02-11
PFPeSND—Below MRL2025-02-11
9Cl-PF3ONSND—Below MRL2025-02-11
PFEESAND—Below MRL2025-02-11
PFMBAND—Below MRL2025-02-11
PFPeAND—Below MRL2025-02-11
PFMPAND—Below MRL2025-02-11
8:2 FTSND—Below MRL2025-02-11
4:2 FTSND—Below MRL2025-02-11
6:2 FTSND—Below MRL2025-02-11
PFHpSND—Below MRL2025-02-11
PFDAND—Below MRL2025-09-03
PFPeSND—Below MRL2025-09-03
lithiumND—Below MRL2025-09-03
NMeFOSAAND—Below MRL2025-09-03
NEtFOSAAND—Below MRL2025-09-03
PFTrDAND—Below MRL2025-09-03
PFTAND—Below MRL2025-09-03
PFHpSND—Below MRL2025-09-03
ADONAND—Below MRL2025-09-03
PFBSND—Below MRL2025-09-03
PFHpAND—Below MRL2025-09-03
PFHxSND10Below MRL2025-09-03
PFNAND10Below MRL2025-09-03
PFDoAND—Below MRL2025-09-03
PFUnAND—Below MRL2025-09-03
PFHxAND—Below MRL2025-09-03
9Cl-PF3ONSND—Below MRL2025-09-03
NFDHAND—Below MRL2025-09-03
HFPO-DAND10Below MRL2025-09-03
PFBAND—Below MRL2025-09-03
6:2 FTSND—Below MRL2025-09-03
4:2 FTSND—Below MRL2025-09-03
8:2 FTSND—Below MRL2025-09-03
PFMPAND—Below MRL2025-09-03
PFPeAND—Below MRL2025-09-03
PFMBAND—Below MRL2025-09-03
PFEESAND—Below MRL2025-09-03
11Cl-PF3OUdSND—Below MRL2025-09-03
PFTAND—Below MRL2025-02-11
PFDAND—Below MRL2025-02-11
PFBAND—Below MRL2025-02-11
HFPO-DAND10Below MRL2025-02-11
ADONAND—Below MRL2025-02-11
9Cl-PF3ONSND—Below MRL2025-02-11
11Cl-PF3OUdSND—Below MRL2025-02-11
PFUnAND—Below MRL2025-02-11
6:2 FTSND—Below MRL2025-02-11
PFDoAND—Below MRL2025-02-11
PFNAND10Below MRL2025-02-11
PFHxSND10Below MRL2025-02-11
NEtFOSAAND—Below MRL2025-02-11
lithiumND—Below MRL2025-02-11
PFHxAND—Below MRL2025-02-11
PFPeSND—Below MRL2025-02-11
4:2 FTSND—Below MRL2025-02-11
PFHpAND—Below MRL2025-02-11
NMeFOSAAND—Below MRL2025-02-11
PFHpSND—Below MRL2025-02-11
NFDHAND—Below MRL2025-02-11
PFEESAND—Below MRL2025-02-11
PFMBAND—Below MRL2025-02-11
PFPeAND—Below MRL2025-02-11
PFMPAND—Below MRL2025-02-11
8:2 FTSND—Below MRL2025-02-11
PFTrDAND—Below MRL2025-02-11
9Cl-PF3ONSND—Below MRL2025-09-03
PFDoAND—Below MRL2025-09-03
11Cl-PF3OUdSND—Below MRL2025-09-03
PFUnAND—Below MRL2025-09-03
PFDAND—Below MRL2025-09-03
PFNAND10Below MRL2025-09-03
ADONAND—Below MRL2025-09-03
PFHpAND—Below MRL2025-09-03
PFMBAND—Below MRL2025-09-03
PFHpSND—Below MRL2025-09-03
PFHxSND10Below MRL2025-09-03
NFDHAND—Below MRL2025-09-03
lithiumND—Below MRL2025-09-03
PFTAND—Below MRL2025-09-03
PFTrDAND—Below MRL2025-09-03
NEtFOSAAND—Below MRL2025-09-03
PFMPAND—Below MRL2025-09-03
PFPeSND—Below MRL2025-09-03
HFPO-DAND10Below MRL2025-09-03
PFEESAND—Below MRL2025-09-03
8:2 FTSND—Below MRL2025-09-03
4:2 FTSND—Below MRL2025-09-03
6:2 FTSND—Below MRL2025-09-03
PFBAND—Below MRL2025-09-03
NMeFOSAAND—Below MRL2025-09-03
PFHxSND10Below MRL2025-02-11
lithiumND—Below MRL2025-02-11
NMeFOSAAND—Below MRL2025-02-11
NEtFOSAAND—Below MRL2025-02-11
PFTrDAND—Below MRL2025-02-11
PFTAND—Below MRL2025-02-11
PFHpSND—Below MRL2025-02-11
PFPeSND—Below MRL2025-02-11
NFDHAND—Below MRL2025-02-11
PFEESAND—Below MRL2025-02-11
PFMBAND—Below MRL2025-02-11
PFPeAND—Below MRL2025-02-11
PFMPAND—Below MRL2025-02-11
8:2 FTSND—Below MRL2025-02-11
4:2 FTSND—Below MRL2025-02-11
PFBAND—Below MRL2025-02-11
HFPO-DAND10Below MRL2025-02-11
ADONAND—Below MRL2025-02-11
9Cl-PF3ONSND—Below MRL2025-02-11
11Cl-PF3OUdSND—Below MRL2025-02-11
PFUnAND—Below MRL2025-02-11
PFHxAND—Below MRL2025-02-11
PFDoAND—Below MRL2025-02-11
PFDAND—Below MRL2025-02-11
PFHpAND—Below MRL2025-02-11
PFNAND10Below MRL2025-02-11
PFOAND4Below MRL2025-02-11
6:2 FTSND—Below MRL2025-02-11
11Cl-PF3OUdSND—Below MRL2025-09-03
6:2 FTSND—Below MRL2025-09-03
PFBAND—Below MRL2025-09-03
HFPO-DAND10Below MRL2025-09-03
9Cl-PF3ONSND—Below MRL2025-09-03
ADONAND—Below MRL2025-09-03
PFUnAND—Below MRL2025-09-03
8:2 FTSND—Below MRL2025-09-03
PFMPAND—Below MRL2025-09-03
PFPeAND—Below MRL2025-09-03
PFOS6.74Exceeds2025-09-03
PFOA6.34Exceeds2025-09-03
PFOS6.14Exceeds2025-02-11
PFOA5.34Exceeds2025-02-11
PFOA5.34Exceeds2025-02-11
PFOA54Exceeds2025-09-03
PFOA4.94Exceeds2025-09-03
PFOS4.84Exceeds2025-09-03
PFBS4.6—2025-09-03
PFBS4.5—2025-09-03
PFOS4.44Exceeds2025-02-11
PFOS4.24Exceeds2025-02-11
PFOS4.14Exceeds2025-09-03
PFBS4.1—2025-02-11
PFHxA4—2025-09-03
PFPeA3.7—2025-09-03
PFBS3.6—2025-02-11

Next steps