PFAS Comply

WESTBOROUGH WATER DEPARTMENT

PWSID: MA2328000 · WESTBOROUGH, MA · Serving 21,567 people

Type: CWSOwner: LSource: SW
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

PFOA5.8 ppt(MCL: 4 ppt)
PFOS7.5 ppt(MCL: 4 ppt)

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

Detection summary

3
PFAS compounds detected
7.5 ppt
Highest single detection
2023-09-14
Latest sample date
partial
Data completeness

All PFAS detection results

Source: EPA UCMR5 (UCMR5)

ContaminantResult (ppt)MCL (ppt)StatusSample date
PFTrDAND—Below MRL2023-11-27
HFPO-DAND10Below MRL2023-07-12
ADONAND—Below MRL2023-07-12
9Cl-PF3ONSND—Below MRL2023-07-12
11Cl-PF3OUdSND—Below MRL2023-07-12
PFBAND—Below MRL2023-07-12
PFUnAND—Below MRL2023-07-12
PFDoAND—Below MRL2023-07-12
8:2 FTSND—Below MRL2023-07-12
NEtFOSAAND—Below MRL2023-05-16
PFMPAND—Below MRL2023-07-12
PFTrDAND—Below MRL2023-05-16
PFTAND—Below MRL2023-05-16
NMeFOSAAND—Below MRL2023-05-16
PFHxSND10Below MRL2023-07-12
lithiumND—Below MRL2023-05-16
PFNAND10Below MRL2023-07-12
NMeFOSAAND—Below MRL2023-11-27
PFMPAND—Below MRL2024-01-22
NEtFOSAAND—Below MRL2023-11-27
6:2 FTSND—Below MRL2023-07-12
4:2 FTSND—Below MRL2023-07-12
PFHpAND—Below MRL2023-07-12
PFHxAND—Below MRL2023-07-12
PFOSND4Below MRL2023-07-12
PFOAND4Below MRL2023-07-12
PFDAND—Below MRL2023-07-12
PFPeSND—Below MRL2023-07-12
NFDHAND—Below MRL2023-07-12
PFEESAND—Below MRL2023-07-12
PFMBAND—Below MRL2023-07-12
PFPeAND—Below MRL2023-07-12
PFHpSND—Below MRL2023-07-12
PFEESAND—Below MRL2024-01-22
NFDHAND—Below MRL2024-01-22
PFPeSND—Below MRL2024-01-22
PFHpSND—Below MRL2024-01-22
PFTAND—Below MRL2023-11-27
PFTrDAND—Below MRL2023-11-27
lithiumND—Below MRL2023-11-27
NMeFOSAAND—Below MRL2023-11-27
NEtFOSAAND—Below MRL2023-11-27
PFUnAND—Below MRL2024-01-22
PFBAND—Below MRL2024-01-22
PFBSND—Below MRL2024-01-22
PFHpAND—Below MRL2024-01-22
PFHxSND10Below MRL2024-01-22
PFNAND10Below MRL2024-01-22
PFDAND—Below MRL2024-01-22
PFOSND4Below MRL2024-01-22
PFHxAND—Below MRL2024-01-22
PFMBAND—Below MRL2024-01-22
11Cl-PF3OUdSND—Below MRL2024-01-22
9Cl-PF3ONSND—Below MRL2024-01-22
ADONAND—Below MRL2024-01-22
HFPO-DAND10Below MRL2024-01-22
6:2 FTSND—Below MRL2024-01-22
8:2 FTSND—Below MRL2024-01-22
PFMPAND—Below MRL2024-01-22
PFPeAND—Below MRL2024-01-22
PFDoAND—Below MRL2024-01-22
4:2 FTSND—Below MRL2024-01-22
PFOSND4Below MRL2023-06-26
6:2 FTSND—Below MRL2023-06-26
8:2 FTSND—Below MRL2023-06-26
PFPeAND—Below MRL2023-06-26
PFMBAND—Below MRL2023-06-26
PFEESAND—Below MRL2023-06-26
NFDHAND—Below MRL2023-06-26
PFPeSND—Below MRL2023-06-26
PFBAND—Below MRL2023-06-26
PFNAND10Below MRL2023-06-26
4:2 FTSND—Below MRL2023-06-26
PFOAND4Below MRL2023-06-26
PFDAND—Below MRL2023-06-26
PFDoAND—Below MRL2023-06-26
PFHxAND—Below MRL2023-06-26
PFUnAND—Below MRL2023-06-26
11Cl-PF3OUdSND—Below MRL2023-06-26
9Cl-PF3ONSND—Below MRL2023-06-26
ADONAND—Below MRL2023-06-26
PFHpSND—Below MRL2023-06-26
NMeFOSAAND—Below MRL2023-05-16
PFTAND—Below MRL2023-05-16
PFMPAND—Below MRL2023-06-26
NEtFOSAAND—Below MRL2023-05-16
HFPO-DAND10Below MRL2023-06-26
lithiumND—Below MRL2023-05-16
PFHxSND10Below MRL2023-06-26
PFHpAND—Below MRL2023-06-26
PFBSND—Below MRL2023-06-26
PFTrDAND—Below MRL2023-05-16
PFUnAND—Below MRL2024-01-22
11Cl-PF3OUdSND—Below MRL2024-01-22
9Cl-PF3ONSND—Below MRL2024-01-22
ADONAND—Below MRL2024-01-22
HFPO-DAND10Below MRL2024-01-22
PFBAND—Below MRL2024-01-22
PFHpSND—Below MRL2024-01-22
PFPeSND—Below MRL2024-01-22
PFEESAND—Below MRL2024-01-22
PFNAND10Below MRL2024-01-22
6:2 FTSND—Below MRL2024-01-22
PFDoAND—Below MRL2024-01-22
PFMBAND—Below MRL2024-01-22
PFPeAND—Below MRL2024-01-22
PFMPAND—Below MRL2024-01-22
8:2 FTSND—Below MRL2024-01-22
4:2 FTSND—Below MRL2024-01-22
NFDHAND—Below MRL2024-01-22
PFOAND4Below MRL2024-01-22
PFDAND—Below MRL2024-01-22
PFTrDAND—Below MRL2023-11-27
NEtFOSAAND—Below MRL2023-11-27
lithiumND—Below MRL2023-11-27
PFTAND—Below MRL2023-11-27
PFHxAND—Below MRL2024-01-22
PFBSND—Below MRL2024-01-22
PFHpAND—Below MRL2024-01-22
PFHxSND10Below MRL2024-01-22
PFOSND4Below MRL2024-01-22
NMeFOSAAND—Below MRL2023-11-27
HFPO-DAND10Below MRL2023-06-26
PFUnAND—Below MRL2023-06-26
11Cl-PF3OUdSND—Below MRL2023-06-26
PFHxAND—Below MRL2023-06-26
9Cl-PF3ONSND—Below MRL2023-06-26
ADONAND—Below MRL2023-06-26
PFBAND—Below MRL2023-06-26
6:2 FTSND—Below MRL2023-06-26
4:2 FTSND—Below MRL2023-06-26
PFDoAND—Below MRL2023-06-26
PFMPAND—Below MRL2023-06-26
PFHpAND—Below MRL2023-06-26
PFPeAND—Below MRL2023-06-26
PFMBAND—Below MRL2023-06-26
PFEESAND—Below MRL2023-06-26
8:2 FTSND—Below MRL2023-06-26
NFDHAND—Below MRL2023-06-26
lithiumND—Below MRL2023-05-16
PFTAND—Below MRL2023-05-16
PFNAND10Below MRL2023-06-26
PFPeSND—Below MRL2023-06-26
PFDAND—Below MRL2023-06-26
PFTrDAND—Below MRL2023-05-16
NEtFOSAAND—Below MRL2023-05-16
NMeFOSAAND—Below MRL2023-05-16
PFBSND—Below MRL2023-06-26
PFHxSND10Below MRL2023-06-26
PFOSND4Below MRL2023-06-26
PFOAND4Below MRL2023-06-26
PFHpSND—Below MRL2023-06-26
PFPeAND—Below MRL2024-01-22
PFTAND—Below MRL2023-11-27
NEtFOSAAND—Below MRL2023-11-27
PFTrDAND—Below MRL2023-11-27
PFDAND—Below MRL2024-01-22
PFHpSND—Below MRL2024-01-22
PFEESAND—Below MRL2024-01-22
NMeFOSAAND—Below MRL2023-11-27
PFBSND—Below MRL2024-01-22
PFHpAND—Below MRL2024-01-22
PFHxSND10Below MRL2024-01-22
PFNAND10Below MRL2024-01-22
PFOAND4Below MRL2024-01-22
PFDoAND—Below MRL2024-01-22
PFHxAND—Below MRL2024-01-22
PFUnAND—Below MRL2024-01-22
11Cl-PF3OUdSND—Below MRL2024-01-22
8:2 FTSND—Below MRL2024-01-22
PFOSND4Below MRL2024-01-22
NFDHAND—Below MRL2024-01-22
9Cl-PF3ONSND—Below MRL2024-01-22
PFMBAND—Below MRL2024-01-22
PFMPAND—Below MRL2024-01-22
lithiumND—Below MRL2023-11-27
PFPeSND—Below MRL2024-01-22
4:2 FTSND—Below MRL2024-01-22
6:2 FTSND—Below MRL2024-01-22
PFBAND—Below MRL2024-01-22
HFPO-DAND10Below MRL2024-01-22
ADONAND—Below MRL2024-01-22
PFDoAND—Below MRL2023-06-26
PFHpAND—Below MRL2023-06-26
PFNAND10Below MRL2023-06-26
PFHxSND10Below MRL2023-06-26
PFOAND4Below MRL2023-06-26
PFBSND—Below MRL2023-06-26
PFHpSND—Below MRL2023-06-26
PFPeSND—Below MRL2023-06-26
NMeFOSAAND—Below MRL2023-05-16
NEtFOSAAND—Below MRL2023-05-16
PFHxAND—Below MRL2023-06-26
PFDAND—Below MRL2023-06-26
lithiumND—Below MRL2023-05-16
PFTAND—Below MRL2023-05-16
PFOSND4Below MRL2023-06-26
PFUnAND—Below MRL2023-06-26
NFDHAND—Below MRL2023-06-26
PFTrDAND—Below MRL2023-05-16
PFEESAND—Below MRL2023-06-26
PFMBAND—Below MRL2023-06-26
PFPeAND—Below MRL2023-06-26
PFMPAND—Below MRL2023-06-26
4:2 FTSND—Below MRL2023-06-26
6:2 FTSND—Below MRL2023-06-26
PFBAND—Below MRL2023-06-26
HFPO-DAND10Below MRL2023-06-26
ADONAND—Below MRL2023-06-26
8:2 FTSND—Below MRL2023-06-26
11Cl-PF3OUdSND—Below MRL2023-06-26
9Cl-PF3ONSND—Below MRL2023-06-26
PFHpAND—Below MRL2023-09-14
PFUnAND—Below MRL2023-09-14
PFHxAND—Below MRL2023-09-14
PFDoAND—Below MRL2023-09-14
PFDAND—Below MRL2023-09-14
PFOAND4Below MRL2023-09-14
PFOSND4Below MRL2023-09-14
lithiumND—Below MRL2023-09-14
PFHxSND10Below MRL2023-09-14
PFBSND—Below MRL2023-09-14
11Cl-PF3OUdSND—Below MRL2023-09-14
PFPeAND—Below MRL2023-09-14
PFNAND10Below MRL2023-09-14
PFMBAND—Below MRL2023-09-14
NMeFOSAAND—Below MRL2023-08-09
NEtFOSAAND—Below MRL2023-08-09
PFTrDAND—Below MRL2023-08-09
PFTAND—Below MRL2023-08-09
PFHpSND—Below MRL2023-09-14
PFPeSND—Below MRL2023-09-14
8:2 FTSND—Below MRL2023-09-14
PFEESAND—Below MRL2023-09-14
9Cl-PF3ONSND—Below MRL2023-09-14
PFMPAND—Below MRL2023-09-14
4:2 FTSND—Below MRL2023-09-14
6:2 FTSND—Below MRL2023-09-14
PFBAND—Below MRL2023-09-14
HFPO-DAND10Below MRL2023-09-14
ADONAND—Below MRL2023-09-14
NFDHAND—Below MRL2023-09-14
8:2 FTSND—Below MRL2023-11-27
PFMPAND—Below MRL2023-11-27
11Cl-PF3OUdSND—Below MRL2023-11-27
9Cl-PF3ONSND—Below MRL2023-11-27
ADONAND—Below MRL2023-11-27
HFPO-DAND10Below MRL2023-11-27
PFBAND—Below MRL2023-11-27
PFHxAND—Below MRL2023-11-27
4:2 FTSND—Below MRL2023-11-27
PFDoAND—Below MRL2023-11-27
NMeFOSAAND—Below MRL2023-11-27
NEtFOSAAND—Below MRL2023-11-27
NFDHAND—Below MRL2023-11-27
PFEESAND—Below MRL2023-11-27
PFMBAND—Below MRL2023-11-27
PFPeAND—Below MRL2023-11-27
6:2 FTSND—Below MRL2023-11-27
PFBSND—Below MRL2023-11-27
lithiumND—Below MRL2023-11-27
PFPeSND—Below MRL2023-11-27
PFHpSND—Below MRL2023-11-27
PFUnAND—Below MRL2023-11-27
PFTrDAND—Below MRL2023-11-27
PFHpAND—Below MRL2023-11-27
PFHxSND10Below MRL2023-11-27
PFNAND10Below MRL2023-11-27
PFOSND4Below MRL2023-11-27
PFOAND4Below MRL2023-11-27
PFDAND—Below MRL2023-11-27
PFTAND—Below MRL2023-11-27
PFTrDAND—Below MRL2024-02-15
PFTAND—Below MRL2024-02-15
NEtFOSAAND—Below MRL2024-02-15
lithiumND—Below MRL2024-02-15
PFPeAND—Below MRL2024-02-15
NMeFOSAAND—Below MRL2024-02-15
PFHpSND—Below MRL2024-02-15
PFPeSND—Below MRL2024-02-15
NFDHAND—Below MRL2024-02-15
PFBSND—Below MRL2024-02-15
PFMBAND—Below MRL2024-02-15
PFMPAND—Below MRL2024-02-15
8:2 FTSND—Below MRL2024-02-15
4:2 FTSND—Below MRL2024-02-15
6:2 FTSND—Below MRL2024-02-15
PFBAND—Below MRL2024-02-15
HFPO-DAND10Below MRL2024-02-15
PFOAND4Below MRL2024-02-15
PFHxSND10Below MRL2024-02-15
PFEESAND—Below MRL2024-02-15
ADONAND—Below MRL2024-02-15
PFHpAND—Below MRL2024-02-15
PFNAND10Below MRL2024-02-15
PFDAND—Below MRL2024-02-15
PFDoAND—Below MRL2024-02-15
PFHxAND—Below MRL2024-02-15
PFUnAND—Below MRL2024-02-15
11Cl-PF3OUdSND—Below MRL2024-02-15
9Cl-PF3ONSND—Below MRL2024-02-15
PFOSND4Below MRL2024-02-15
PFMPAND—Below MRL2023-05-16
NFDHAND—Below MRL2023-05-16
PFPeAND—Below MRL2023-05-16
PFHpAND—Below MRL2023-05-16
PFMBAND—Below MRL2023-05-16
PFEESAND—Below MRL2023-05-16
PFPeSND—Below MRL2023-05-16
PFHpSND—Below MRL2023-05-16
lithiumND—Below MRL2023-05-16
NMeFOSAAND—Below MRL2023-05-16
PFTrDAND—Below MRL2023-05-16
PFTAND—Below MRL2023-05-16
8:2 FTSND—Below MRL2023-05-16
NEtFOSAAND—Below MRL2023-05-16
PFDAND—Below MRL2023-05-16
PFBSND—Below MRL2023-05-16
PFNAND10Below MRL2023-05-16
4:2 FTSND—Below MRL2023-05-16
PFHxSND10Below MRL2023-05-16
PFDoAND—Below MRL2023-05-16
PFHxAND—Below MRL2023-05-16
PFUnAND—Below MRL2023-05-16
11Cl-PF3OUdSND—Below MRL2023-05-16
9Cl-PF3ONSND—Below MRL2023-05-16
ADONAND—Below MRL2023-05-16
HFPO-DAND10Below MRL2023-05-16
PFBAND—Below MRL2023-05-16
6:2 FTSND—Below MRL2023-05-16
11Cl-PF3OUdSND—Below MRL2024-01-22
PFUnAND—Below MRL2024-01-22
PFHxAND—Below MRL2024-01-22
PFOAND4Below MRL2024-01-22
PFOSND4Below MRL2024-01-22
PFNAND10Below MRL2024-01-22
PFHxSND10Below MRL2024-01-22
PFHpAND—Below MRL2024-01-22
PFBSND—Below MRL2024-01-22
lithiumND—Below MRL2023-11-27
9Cl-PF3ONSND—Below MRL2024-01-22
PFDAND—Below MRL2024-01-22
PFMBAND—Below MRL2024-01-22
PFDoAND—Below MRL2024-01-22
ADONAND—Below MRL2024-01-22
HFPO-DAND10Below MRL2024-01-22
PFBAND—Below MRL2024-01-22
6:2 FTSND—Below MRL2024-01-22
4:2 FTSND—Below MRL2024-01-22
8:2 FTSND—Below MRL2024-01-22
PFPeAND—Below MRL2024-01-22
PFEESAND—Below MRL2024-01-22
NFDHAND—Below MRL2024-01-22
PFPeSND—Below MRL2024-01-22
PFHpSND—Below MRL2024-01-22
PFTAND—Below MRL2023-11-27
PFOS7.54Exceeds2023-05-16
PFOA5.84Exceeds2023-05-16
PFOA44Detected2024-01-22
PFBS3.4—2023-07-12

Violation history

Monitoring & Reporting - PFOA(PFOA)
2022-10-01 · Resolved · Tier 3
Monitoring & Reporting - PFOS(PFOS)
2022-10-01 · Resolved · Tier 3
Monitoring & Reporting - HFPO-DA (GenX)(HFPO-DA (GenX))
2022-10-01 · Resolved · Tier 3
Monitoring & Reporting - PFHxS(PFHxS)
2022-10-01 · Resolved · Tier 3
Monitoring & Reporting - PFNA(PFNA)
2022-10-01 · Resolved · Tier 3
Monitoring & Reporting - PFBS(PFBS)
2022-10-01 · Resolved · Tier 3
Monitoring & Reporting - PFHxA(PFHxA)
2022-10-01 · Resolved · Tier 3

Next steps