PFAS Comply

NATICK WATER AND SEWER DIVISION

PWSID: MA3198000 · NATICK, MA · Serving 37,006 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

PFOA14.3 ppt(MCL: 4 ppt)
PFOS37.3 ppt(MCL: 4 ppt)

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

Detection summary

6
PFAS compounds detected
37.3 ppt
Highest single detection
2025-06-11
Latest sample date
complete
Data completeness

All PFAS detection results

Source: EPA UCMR5 (UCMR5)

ContaminantResult (ppt)MCL (ppt)StatusSample date
PFHpSND—Below MRL2025-06-11
9Cl-PF3ONSND—Below MRL2024-12-16
11Cl-PF3OUdSND—Below MRL2024-12-16
PFUnAND—Below MRL2024-12-16
PFHxAND—Below MRL2024-12-16
9Cl-PF3ONSND—Below MRL2025-06-11
11Cl-PF3OUdSND—Below MRL2025-06-11
PFNAND10Below MRL2025-06-11
PFHxSND10Below MRL2025-06-11
PFHpAND—Below MRL2025-06-11
PFBSND—Below MRL2025-06-11
PFOSND4Below MRL2025-06-11
PFPeSND—Below MRL2025-06-11
PFDAND—Below MRL2025-06-11
PFEESAND—Below MRL2025-06-11
PFMBAND—Below MRL2025-06-11
PFPeAND—Below MRL2025-06-11
PFMPAND—Below MRL2025-06-11
PFUnAND—Below MRL2025-06-11
PFHxAND—Below MRL2025-06-11
PFDoAND—Below MRL2025-06-11
PFNAND10Below MRL2024-12-16
PFDoAND—Below MRL2024-12-16
PFHpAND—Below MRL2024-12-16
PFDAND—Below MRL2024-12-16
4:2 FTSND—Below MRL2024-12-16
6:2 FTSND—Below MRL2024-12-16
PFBAND—Below MRL2024-12-16
HFPO-DAND10Below MRL2024-12-16
ADONAND—Below MRL2024-12-16
PFMBAND—Below MRL2024-12-16
NEtFOSAAND—Below MRL2024-12-16
PFTrDAND—Below MRL2024-12-16
PFTAND—Below MRL2024-12-16
PFHpSND—Below MRL2024-12-16
PFPeSND—Below MRL2024-12-16
NMeFOSAAND—Below MRL2024-12-16
PFEESAND—Below MRL2024-12-16
PFMPAND—Below MRL2024-12-16
lithiumND—Below MRL2024-12-16
8:2 FTSND—Below MRL2024-12-16
NFDHAND—Below MRL2024-12-16
11Cl-PF3OUdSND—Below MRL2025-06-11
PFTAND—Below MRL2025-06-11
PFTrDAND—Below MRL2025-06-11
NEtFOSAAND—Below MRL2025-06-11
NMeFOSAAND—Below MRL2025-06-11
lithiumND—Below MRL2025-06-11
PFHxAND—Below MRL2025-06-11
PFUnAND—Below MRL2025-06-11
PFMBAND—Below MRL2025-06-11
PFDoAND—Below MRL2025-06-11
PFDAND—Below MRL2025-06-11
PFNAND10Below MRL2025-06-11
PFHpAND—Below MRL2025-06-11
PFHpSND—Below MRL2025-06-11
PFPeSND—Below MRL2025-06-11
PFEESAND—Below MRL2025-06-11
9Cl-PF3ONSND—Below MRL2025-06-11
PFPeAND—Below MRL2025-06-11
PFMPAND—Below MRL2025-06-11
8:2 FTSND—Below MRL2025-06-11
4:2 FTSND—Below MRL2025-06-11
6:2 FTSND—Below MRL2025-06-11
PFBAND—Below MRL2025-06-11
HFPO-DAND10Below MRL2025-06-11
ADONAND—Below MRL2025-06-11
NFDHAND—Below MRL2025-06-11
lithiumND—Below MRL2024-12-16
PFHxAND—Below MRL2024-12-16
PFDoAND—Below MRL2024-12-16
PFDAND—Below MRL2024-12-16
PFOSND4Below MRL2024-12-16
PFNAND10Below MRL2024-12-16
PFHxSND10Below MRL2024-12-16
PFBSND—Below MRL2024-12-16
ADONAND—Below MRL2024-12-16
PFEESAND—Below MRL2024-12-16
NFDHAND—Below MRL2024-12-16
PFPeSND—Below MRL2024-12-16
PFHpSND—Below MRL2024-12-16
PFHpAND—Below MRL2024-12-16
8:2 FTSND—Below MRL2024-12-16
NEtFOSAAND—Below MRL2024-12-16
PFTrDAND—Below MRL2024-12-16
PFTAND—Below MRL2024-12-16
NMeFOSAAND—Below MRL2024-12-16
PFBAND—Below MRL2024-12-16
11Cl-PF3OUdSND—Below MRL2024-12-16
4:2 FTSND—Below MRL2024-12-16
PFUnAND—Below MRL2024-12-16
PFMPAND—Below MRL2024-12-16
PFPeAND—Below MRL2024-12-16
PFMBAND—Below MRL2024-12-16
HFPO-DAND10Below MRL2024-12-16
9Cl-PF3ONSND—Below MRL2024-12-16
6:2 FTSND—Below MRL2024-12-16
lithiumND—Below MRL2025-06-11
NEtFOSAAND—Below MRL2025-06-11
PFPeAND—Below MRL2025-06-11
PFMBAND—Below MRL2025-06-11
PFEESAND—Below MRL2025-06-11
NFDHAND—Below MRL2025-06-11
PFPeSND—Below MRL2025-06-11
PFMPAND—Below MRL2025-06-11
PFTrDAND—Below MRL2025-06-11
PFTAND—Below MRL2025-06-11
PFHpAND—Below MRL2025-06-11
PFHxSND10Below MRL2025-06-11
PFNAND10Below MRL2025-06-11
PFDAND—Below MRL2025-06-11
PFHpSND—Below MRL2025-06-11
PFHxAND—Below MRL2025-06-11
NMeFOSAAND—Below MRL2025-06-11
8:2 FTSND—Below MRL2025-06-11
PFDoAND—Below MRL2025-06-11
PFUnAND—Below MRL2025-06-11
11Cl-PF3OUdSND—Below MRL2025-06-11
6:2 FTSND—Below MRL2025-06-11
ADONAND—Below MRL2025-06-11
HFPO-DAND10Below MRL2025-06-11
PFBAND—Below MRL2025-06-11
9Cl-PF3ONSND—Below MRL2025-06-11
4:2 FTSND—Below MRL2025-06-11
PFPeSND—Below MRL2024-12-16
4:2 FTSND—Below MRL2024-12-16
8:2 FTSND—Below MRL2024-12-16
PFMPAND—Below MRL2024-12-16
PFPeAND—Below MRL2024-12-16
PFMBAND—Below MRL2024-12-16
6:2 FTSND—Below MRL2024-12-16
NFDHAND—Below MRL2024-12-16
NEtFOSAAND—Below MRL2024-12-16
PFHpSND—Below MRL2024-12-16
lithiumND—Below MRL2024-12-16
PFTAND—Below MRL2024-12-16
PFTrDAND—Below MRL2024-12-16
PFBSND—Below MRL2024-12-16
NMeFOSAAND—Below MRL2024-12-16
PFEESAND—Below MRL2024-12-16
PFOAND4Below MRL2024-12-16
PFHxSND10Below MRL2024-12-16
PFBAND—Below MRL2024-12-16
PFHpAND—Below MRL2024-12-16
PFDAND—Below MRL2024-12-16
PFDoAND—Below MRL2024-12-16
PFHxAND—Below MRL2024-12-16
PFUnAND—Below MRL2024-12-16
11Cl-PF3OUdSND—Below MRL2024-12-16
9Cl-PF3ONSND—Below MRL2024-12-16
ADONAND—Below MRL2024-12-16
HFPO-DAND10Below MRL2024-12-16
PFNAND10Below MRL2024-12-16
PFHpSND—Below MRL2025-06-11
lithiumND—Below MRL2025-06-11
PFHpAND—Below MRL2025-06-11
PFHxSND10Below MRL2025-06-11
PFNAND10Below MRL2025-06-11
PFOSND4Below MRL2025-06-11
PFOAND4Below MRL2025-06-11
PFDAND—Below MRL2025-06-11
PFDoAND—Below MRL2025-06-11
PFHxAND—Below MRL2025-06-11
PFPeSND—Below MRL2025-06-11
PFTrDAND—Below MRL2025-06-11
6:2 FTSND—Below MRL2025-06-11
PFTAND—Below MRL2025-06-11
NFDHAND—Below MRL2025-06-11
PFEESAND—Below MRL2025-06-11
PFMBAND—Below MRL2025-06-11
PFPeAND—Below MRL2025-06-11
PFMPAND—Below MRL2025-06-11
PFUnAND—Below MRL2025-06-11
4:2 FTSND—Below MRL2025-06-11
PFBAND—Below MRL2025-06-11
HFPO-DAND10Below MRL2025-06-11
ADONAND—Below MRL2025-06-11
9Cl-PF3ONSND—Below MRL2025-06-11
11Cl-PF3OUdSND—Below MRL2025-06-11
NMeFOSAAND—Below MRL2025-06-11
NEtFOSAAND—Below MRL2025-06-11
8:2 FTSND—Below MRL2025-06-11
6:2 FTSND—Below MRL2024-12-16
HFPO-DAND10Below MRL2024-12-16
ADONAND—Below MRL2024-12-16
PFUnAND—Below MRL2024-12-16
11Cl-PF3OUdSND—Below MRL2024-12-16
4:2 FTSND—Below MRL2024-12-16
PFTAND—Below MRL2024-12-16
NMeFOSAAND—Below MRL2024-12-16
9Cl-PF3ONSND—Below MRL2024-12-16
8:2 FTSND—Below MRL2024-12-16
PFMPAND—Below MRL2024-12-16
PFMBAND—Below MRL2024-12-16
PFTrDAND—Below MRL2024-12-16
PFHpSND—Below MRL2024-12-16
PFPeSND—Below MRL2024-12-16
NFDHAND—Below MRL2024-12-16
PFOSND4Below MRL2024-12-16
PFEESAND—Below MRL2024-12-16
PFBSND—Below MRL2024-12-16
PFDAND—Below MRL2024-12-16
PFOAND4Below MRL2024-12-16
PFNAND10Below MRL2024-12-16
PFHxSND10Below MRL2024-12-16
PFDoAND—Below MRL2024-12-16
PFHxAND—Below MRL2024-12-16
PFHpAND—Below MRL2024-12-16
NEtFOSAAND—Below MRL2024-12-16
lithiumND—Below MRL2024-12-16
NEtFOSAAND—Below MRL2025-06-11
PFTrDAND—Below MRL2025-06-11
PFTAND—Below MRL2025-06-11
PFBAND—Below MRL2025-06-11
HFPO-DAND10Below MRL2025-06-11
6:2 FTSND—Below MRL2025-06-11
4:2 FTSND—Below MRL2025-06-11
8:2 FTSND—Below MRL2025-06-11
lithiumND—Below MRL2025-06-11
PFOAND4Below MRL2025-06-11
NMeFOSAAND—Below MRL2025-06-11
NFDHAND—Below MRL2025-06-11
ADONAND—Below MRL2025-06-11
PFOS37.34Exceeds2024-12-16
PFOS27.14Exceeds2025-06-11
PFOA14.34Exceeds2024-12-16
PFHxS11.210Exceeds2024-12-16
PFOA9.74Exceeds2025-06-11
PFBS6.5—2024-12-16
PFBA5—2024-12-16
PFOA4.24Exceeds2025-06-11
PFOS44Detected2024-12-16
PFOS44Detected2025-06-11
PFHxS410Detected2025-06-11
PFOA44Detected2024-12-16
PFBS3.6—2025-06-11
PFPeA3.5—2024-12-16
PFPeA3.3—2024-12-16
PFBS3—2025-06-11
PFBS3—2025-06-11

Next steps