PFAS Comply

MERRIMAC WATER DEPARTMENT

PWSID: MA3180000 · MERRIMAC, MA · Serving 7,193 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

PFOA6.9 ppt(MCL: 4 ppt)

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

Detection summary

1
PFAS compounds detected
6.9 ppt
Highest single detection
2024-07-09
Latest sample date
partial
Data completeness

All PFAS detection results

Source: EPA UCMR5 (UCMR5)

ContaminantResult (ppt)MCL (ppt)StatusSample date
PFHpAND—Below MRL2024-07-09
6:2 FTSND—Below MRL2024-01-17
11Cl-PF3OUdSND—Below MRL2024-01-17
ADONAND—Below MRL2024-01-17
HFPO-DAND10Below MRL2024-01-17
PFBAND—Below MRL2024-01-17
4:2 FTSND—Below MRL2024-01-17
8:2 FTSND—Below MRL2024-01-17
PFMPAND—Below MRL2024-01-17
PFPeAND—Below MRL2024-01-17
PFUnAND—Below MRL2024-01-17
PFEESAND—Below MRL2024-01-17
PFHxSND10Below MRL2024-01-17
PFHpSND—Below MRL2024-01-17
PFPeSND—Below MRL2024-01-17
PFMBAND—Below MRL2024-01-17
PFBSND—Below MRL2024-01-17
NFDHAND—Below MRL2024-01-17
PFTAND—Below MRL2024-01-17
PFTrDAND—Below MRL2024-01-17
NEtFOSAAND—Below MRL2024-01-17
PFOSND4Below MRL2024-01-17
NMeFOSAAND—Below MRL2024-01-17
PFHxAND—Below MRL2024-01-17
PFHpAND—Below MRL2024-01-17
PFNAND10Below MRL2024-01-17
PFBAND—Below MRL2024-07-09
9Cl-PF3ONSND—Below MRL2024-01-17
PFDAND—Below MRL2024-01-17
PFDoAND—Below MRL2024-01-17
lithiumND—Below MRL2024-01-17
PFBAND—Below MRL2024-07-09
lithiumND—Below MRL2024-07-09
NFDHAND—Below MRL2024-07-09
ADONAND—Below MRL2024-07-09
NEtFOSAAND—Below MRL2024-07-09
PFPeSND—Below MRL2024-07-09
PFEESAND—Below MRL2024-07-09
PFMBAND—Below MRL2024-07-09
PFPeAND—Below MRL2024-07-09
PFTrDAND—Below MRL2024-07-09
PFTAND—Below MRL2024-07-09
PFMPAND—Below MRL2024-07-09
8:2 FTSND—Below MRL2024-07-09
4:2 FTSND—Below MRL2024-07-09
6:2 FTSND—Below MRL2024-07-09
HFPO-DAND10Below MRL2024-07-09
PFHxSND10Below MRL2024-07-09
PFHpSND—Below MRL2024-07-09
9Cl-PF3ONSND—Below MRL2024-07-09
NMeFOSAAND—Below MRL2024-07-09
PFBSND—Below MRL2024-07-09
PFHpAND—Below MRL2024-07-09
PFNAND10Below MRL2024-07-09
PFOSND4Below MRL2024-07-09
PFDAND—Below MRL2024-07-09
PFDoAND—Below MRL2024-07-09
PFHxAND—Below MRL2024-07-09
PFUnAND—Below MRL2024-07-09
11Cl-PF3OUdSND—Below MRL2024-07-09
PFPeSND—Below MRL2024-01-17
PFBAND—Below MRL2024-01-17
6:2 FTSND—Below MRL2024-01-17
4:2 FTSND—Below MRL2024-01-17
8:2 FTSND—Below MRL2024-01-17
PFMPAND—Below MRL2024-01-17
PFPeAND—Below MRL2024-01-17
PFMBAND—Below MRL2024-01-17
PFTAND—Below MRL2024-01-17
NFDHAND—Below MRL2024-01-17
HFPO-DAND10Below MRL2024-01-17
PFHpSND—Below MRL2024-01-17
PFHpAND—Below MRL2024-01-17
PFEESAND—Below MRL2024-01-17
ADONAND—Below MRL2024-01-17
9Cl-PF3ONSND—Below MRL2024-01-17
11Cl-PF3OUdSND—Below MRL2024-01-17
PFUnAND—Below MRL2024-01-17
PFHxAND—Below MRL2024-01-17
PFDoAND—Below MRL2024-01-17
PFDAND—Below MRL2024-01-17
PFOAND4Below MRL2024-01-17
PFOSND4Below MRL2024-01-17
PFNAND10Below MRL2024-01-17
PFHxSND10Below MRL2024-01-17
PFBSND—Below MRL2024-01-17
lithiumND—Below MRL2024-01-17
PFTrDAND—Below MRL2024-01-17
NEtFOSAAND—Below MRL2024-01-17
NMeFOSAAND—Below MRL2024-01-17
4:2 FTSND—Below MRL2024-07-09
PFHxSND10Below MRL2024-07-09
PFNAND10Below MRL2024-07-09
PFOSND4Below MRL2024-07-09
PFOAND4Below MRL2024-07-09
PFDAND—Below MRL2024-07-09
PFDoAND—Below MRL2024-07-09
PFHxAND—Below MRL2024-07-09
PFUnAND—Below MRL2024-07-09
11Cl-PF3OUdSND—Below MRL2024-07-09
9Cl-PF3ONSND—Below MRL2024-07-09
ADONAND—Below MRL2024-07-09
HFPO-DAND10Below MRL2024-07-09
NMeFOSAAND—Below MRL2024-07-09
6:2 FTSND—Below MRL2024-07-09
PFBSND—Below MRL2024-07-09
8:2 FTSND—Below MRL2024-07-09
PFMPAND—Below MRL2024-07-09
PFPeAND—Below MRL2024-07-09
PFMBAND—Below MRL2024-07-09
PFEESAND—Below MRL2024-07-09
NFDHAND—Below MRL2024-07-09
PFPeSND—Below MRL2024-07-09
PFHpSND—Below MRL2024-07-09
lithiumND—Below MRL2024-07-09
PFTAND—Below MRL2024-07-09
PFTrDAND—Below MRL2024-07-09
NEtFOSAAND—Below MRL2024-07-09
PFOA6.94Exceeds2024-01-17
PFOA5.64Exceeds2024-07-09

Violation history

Monitoring & Reporting - PFOA(PFOA)
2019-01-01 · Open · Tier 3
Monitoring & Reporting - PFOS(PFOS)
2019-01-01 · Open · Tier 3
Monitoring & Reporting - HFPO-DA (GenX)(HFPO-DA (GenX))
2019-01-01 · Open · Tier 3
Monitoring & Reporting - PFHxS(PFHxS)
2019-01-01 · Open · Tier 3
Monitoring & Reporting - PFNA(PFNA)
2019-01-01 · Open · Tier 3
Monitoring & Reporting - PFBS(PFBS)
2019-01-01 · Open · Tier 3
Monitoring & Reporting - PFHxA(PFHxA)
2019-01-01 · Open · Tier 3

Next steps