PFAS Comply

WILLIAMSPORT MUN WATER AUTH

PWSID: PA4410173 · WILLIAMSPORT, PA · Serving 51,000 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

PFOS5.1 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
9.7 ppt
Highest single detection
2024-09-03
Latest sample date
complete
Data completeness

All PFAS detection results

Source: EPA UCMR5 (UCMR5)

ContaminantResult (ppt)MCL (ppt)StatusSample date
PFOAND4Below MRL2024-12-10
PFOSND4Below MRL2024-03-05
PFBAND—Below MRL2024-03-05
6:2 FTSND—Below MRL2024-03-05
4:2 FTSND—Below MRL2024-03-05
8:2 FTSND—Below MRL2024-03-05
PFMPAND—Below MRL2024-03-05
PFPeAND—Below MRL2024-03-05
PFMBAND—Below MRL2024-03-05
PFEESAND—Below MRL2024-03-05
NFDHAND—Below MRL2024-03-05
PFPeSND—Below MRL2024-03-05
PFHpSND—Below MRL2024-03-05
PFBSND—Below MRL2024-03-05
PFBAND—Below MRL2024-12-10
PFDAND—Below MRL2024-12-10
PFHxAND—Below MRL2024-12-10
PFUnAND—Below MRL2024-12-10
11Cl-PF3OUdSND—Below MRL2024-12-10
9Cl-PF3ONSND—Below MRL2024-12-10
ADONAND—Below MRL2024-12-10
HFPO-DAND10Below MRL2024-12-10
NEtFOSAAND—Below MRL2024-03-05
lithiumND—Below MRL2024-03-05
ADONAND—Below MRL2024-03-05
9Cl-PF3ONSND—Below MRL2024-03-05
11Cl-PF3OUdSND—Below MRL2024-03-05
PFHpAND—Below MRL2024-03-05
NMeFOSAAND—Below MRL2024-03-05
HFPO-DAND10Below MRL2024-03-05
PFTrDAND—Below MRL2024-03-05
PFTAND—Below MRL2024-03-05
PFHxAND—Below MRL2024-03-05
PFDoAND—Below MRL2024-03-05
PFDAND—Below MRL2024-03-05
PFOAND4Below MRL2024-03-05
PFUnAND—Below MRL2024-03-05
NMeFOSAAND—Below MRL2024-06-05
HFPO-DAND10Below MRL2024-06-05
lithiumND—Below MRL2024-06-05
PFBSND—Below MRL2024-06-05
PFHpAND—Below MRL2024-06-05
PFHxSND10Below MRL2024-06-05
PFNAND10Below MRL2024-06-05
PFOSND4Below MRL2024-06-05
PFOAND4Below MRL2024-06-05
PFDAND—Below MRL2024-06-05
PFDoAND—Below MRL2024-06-05
PFHxAND—Below MRL2024-06-05
PFUnAND—Below MRL2024-06-05
11Cl-PF3OUdSND—Below MRL2024-06-05
NEtFOSAAND—Below MRL2024-06-05
ADONAND—Below MRL2024-06-05
PFTrDAND—Below MRL2024-06-05
PFBAND—Below MRL2024-06-05
6:2 FTSND—Below MRL2024-06-05
4:2 FTSND—Below MRL2024-06-05
8:2 FTSND—Below MRL2024-06-05
PFMPAND—Below MRL2024-06-05
PFPeAND—Below MRL2024-06-05
PFMBAND—Below MRL2024-06-05
PFEESAND—Below MRL2024-06-05
NFDHAND—Below MRL2024-06-05
PFPeSND—Below MRL2024-06-05
PFHpSND—Below MRL2024-06-05
PFTAND—Below MRL2024-06-05
9Cl-PF3ONSND—Below MRL2024-06-05
PFBAND—Below MRL2024-09-03
NMeFOSAAND—Below MRL2024-09-03
NEtFOSAAND—Below MRL2024-09-03
PFTrDAND—Below MRL2024-09-03
PFTAND—Below MRL2024-09-03
PFHpSND—Below MRL2024-09-03
PFPeSND—Below MRL2024-09-03
NFDHAND—Below MRL2024-09-03
PFEESAND—Below MRL2024-09-03
PFMBAND—Below MRL2024-09-03
PFMPAND—Below MRL2024-09-03
8:2 FTSND—Below MRL2024-09-03
PFHpAND—Below MRL2024-09-03
6:2 FTSND—Below MRL2024-09-03
lithiumND—Below MRL2024-09-03
HFPO-DAND10Below MRL2024-09-03
ADONAND—Below MRL2024-09-03
9Cl-PF3ONSND—Below MRL2024-09-03
11Cl-PF3OUdSND—Below MRL2024-09-03
PFUnAND—Below MRL2024-09-03
PFDoAND—Below MRL2024-09-03
PFDAND—Below MRL2024-09-03
PFBSND—Below MRL2024-09-03
4:2 FTSND—Below MRL2024-09-03
PFOAND4Below MRL2024-09-03
PFPeSND—Below MRL2024-12-10
4:2 FTSND—Below MRL2024-12-10
8:2 FTSND—Below MRL2024-12-10
PFMPAND—Below MRL2024-12-10
PFPeAND—Below MRL2024-12-10
PFMBAND—Below MRL2024-12-10
6:2 FTSND—Below MRL2024-12-10
NFDHAND—Below MRL2024-12-10
NMeFOSAAND—Below MRL2024-12-10
PFHpSND—Below MRL2024-12-10
NEtFOSAAND—Below MRL2024-12-10
PFTrDAND—Below MRL2024-12-10
PFTAND—Below MRL2024-12-10
lithiumND—Below MRL2024-12-10
PFEESAND—Below MRL2024-12-10
PFDoAND—Below MRL2024-12-10
PFOSND4Below MRL2024-12-10
PFBSND—Below MRL2024-12-10
PFHpAND—Below MRL2024-12-10
PFHxSND10Below MRL2024-12-10
PFNA9.710Detected2024-09-03
PFOS5.14Exceeds2024-09-03
PFNA4.910Detected2024-03-05
PFNA4.510Detected2024-12-10
PFPeA4.1—2024-09-03
PFHxS3.610Detected2024-09-03
PFHxA3.5—2024-09-03
PFHxS310Detected2024-03-05

Next steps