PFAS Comply

WOONSOCKET WATER DIVISION

PWSID: RI1559518 · WOONSOCKET, RI · Serving 45,828 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

PFOA5.8 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
7.5 ppt
Highest single detection
2023-07-18
Latest sample date
complete
Data completeness

All PFAS detection results

Source: EPA UCMR5 (UCMR5)

ContaminantResult (ppt)MCL (ppt)StatusSample date
4:2 FTSND—Below MRL2023-12-04
PFHxAND—Below MRL2023-03-01
PFUnAND—Below MRL2023-03-01
11Cl-PF3OUdSND—Below MRL2023-03-01
9Cl-PF3ONSND—Below MRL2023-03-01
ADONAND—Below MRL2023-03-01
HFPO-DAND10Below MRL2023-03-01
PFHpSND—Below MRL2023-03-01
PFPeSND—Below MRL2023-03-01
NFDHAND—Below MRL2023-03-01
PFEESAND—Below MRL2023-03-01
PFDoAND—Below MRL2023-03-01
PFPeAND—Below MRL2023-03-01
lithiumND—Below MRL2023-01-23
8:2 FTSND—Below MRL2023-03-01
4:2 FTSND—Below MRL2023-03-01
PFMBAND—Below MRL2023-03-01
PFTAND—Below MRL2023-03-07
NMeFOSAAND—Below MRL2023-03-07
PFHxSND10Below MRL2023-03-01
PFTrDAND—Below MRL2023-03-07
PFDAND—Below MRL2023-03-01
PFBSND—Below MRL2023-03-01
PFBAND—Below MRL2023-03-01
PFHpAND—Below MRL2023-03-01
6:2 FTSND—Below MRL2023-03-01
PFNAND10Below MRL2023-03-01
PFOSND4Below MRL2023-03-01
PFOAND4Below MRL2023-03-01
NEtFOSAAND—Below MRL2023-03-07
NMeFOSAAND—Below MRL2023-04-25
NEtFOSAAND—Below MRL2023-04-25
PFTrDAND—Below MRL2023-04-25
PFTAND—Below MRL2023-04-25
lithiumND—Below MRL2023-04-25
PFBSND—Below MRL2023-04-25
HFPO-DAND10Below MRL2023-04-25
PFHpAND—Below MRL2023-04-25
PFHxSND10Below MRL2023-04-25
PFNAND10Below MRL2023-04-25
PFOSND4Below MRL2023-04-25
PFOAND4Below MRL2023-04-25
PFDAND—Below MRL2023-04-25
PFDoAND—Below MRL2023-04-25
lithiumND—Below MRL2023-10-23
PFPeSND—Below MRL2023-12-04
6:2 FTSND—Below MRL2023-12-04
PFEESAND—Below MRL2023-12-04
PFMBAND—Below MRL2023-12-04
PFMPAND—Below MRL2023-12-04
8:2 FTSND—Below MRL2023-12-04
PFMPAND—Below MRL2023-03-01
PFUnAND—Below MRL2023-04-25
11Cl-PF3OUdSND—Below MRL2023-04-25
ADONAND—Below MRL2023-04-25
PFHpSND—Below MRL2023-04-25
PFBAND—Below MRL2023-04-25
6:2 FTSND—Below MRL2023-04-25
4:2 FTSND—Below MRL2023-04-25
8:2 FTSND—Below MRL2023-04-25
PFMPAND—Below MRL2023-04-25
PFMBAND—Below MRL2023-04-25
PFEESAND—Below MRL2023-04-25
NFDHAND—Below MRL2023-04-25
PFPeSND—Below MRL2023-04-25
9Cl-PF3ONSND—Below MRL2023-04-25
11Cl-PF3OUdSND—Below MRL2023-07-18
PFHxSND10Below MRL2023-07-18
ADONAND—Below MRL2023-07-18
PFDAND—Below MRL2023-07-18
lithiumND—Below MRL2023-07-18
PFTAND—Below MRL2023-07-18
PFTrDAND—Below MRL2023-07-18
NEtFOSAAND—Below MRL2023-07-18
NMeFOSAAND—Below MRL2023-07-18
PFNAND10Below MRL2023-07-18
PFOSND4Below MRL2023-07-18
PFDoAND—Below MRL2023-07-18
PFUnAND—Below MRL2023-07-18
PFMPAND—Below MRL2023-07-18
NFDHAND—Below MRL2023-07-18
PFPeSND—Below MRL2023-07-18
PFBSND—Below MRL2023-07-18
PFHpSND—Below MRL2023-07-18
PFEESAND—Below MRL2023-07-18
8:2 FTSND—Below MRL2023-07-18
4:2 FTSND—Below MRL2023-07-18
6:2 FTSND—Below MRL2023-07-18
HFPO-DAND10Below MRL2023-07-18
9Cl-PF3ONSND—Below MRL2023-07-18
PFMBAND—Below MRL2023-07-18
PFHpSND—Below MRL2023-12-04
PFHxSND10Below MRL2023-12-04
HFPO-DAND10Below MRL2023-12-04
PFUnAND—Below MRL2023-12-04
ADONAND—Below MRL2023-12-04
11Cl-PF3OUdSND—Below MRL2023-12-04
PFHxAND—Below MRL2023-12-04
PFDoAND—Below MRL2023-12-04
PFDAND—Below MRL2023-12-04
PFOAND4Below MRL2023-12-04
PFNAND10Below MRL2023-12-04
PFHpAND—Below MRL2023-12-04
PFBAND—Below MRL2023-12-04
NEtFOSAAND—Below MRL2023-11-20
PFOSND4Below MRL2023-12-04
NFDHAND—Below MRL2023-12-04
PFTAND—Below MRL2023-11-20
PFTrDAND—Below MRL2023-11-20
NMeFOSAAND—Below MRL2023-11-20
PFBSND—Below MRL2023-12-04
9Cl-PF3ONSND—Below MRL2023-12-04
PFPeA7.5—2023-07-18
PFBA6.7—2023-07-18
PFOA5.84Exceeds2023-07-18
PFHxA5—2023-07-18
PFPeA4.9—2023-04-25
PFHxA3.9—2023-04-25
PFHpA3.7—2023-07-18
PFPeA3.7—2023-12-04

Next steps