PFAS Comply

DOWNINGTOWN WATER AUTHORITY

PWSID: PA1150026 · DOWNINGTOWN, PA · Serving 9,900 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

PFOA4.2 ppt(MCL: 4 ppt)

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

Detection summary

4
PFAS compounds detected
4.2 ppt
Highest single detection
2024-07-08
Latest sample date
partial
Data completeness

All PFAS detection results

Source: EPA UCMR5 (UCMR5)

ContaminantResult (ppt)MCL (ppt)StatusSample date
PFHpSND—Below MRL2024-10-15
11Cl-PF3OUdSND—Below MRL2024-01-22
PFUnAND—Below MRL2024-01-22
PFHxAND—Below MRL2024-01-22
PFDoAND—Below MRL2024-01-22
PFDAND—Below MRL2024-01-22
PFOAND4Below MRL2024-01-22
PFOSND4Below MRL2024-01-22
PFNAND10Below MRL2024-01-22
PFHxSND10Below MRL2024-01-22
ADONAND—Below MRL2024-01-22
PFOSND4Below MRL2024-10-15
PFOAND4Below MRL2024-10-15
PFDAND—Below MRL2024-10-15
11Cl-PF3OUdSND—Below MRL2024-10-15
NMeFOSAAND—Below MRL2024-10-15
9Cl-PF3ONSND—Below MRL2024-01-22
NFDHAND—Below MRL2024-01-22
PFHpAND—Below MRL2024-01-22
HFPO-DAND10Below MRL2024-01-22
PFBAND—Below MRL2024-01-22
6:2 FTSND—Below MRL2024-01-22
NMeFOSAAND—Below MRL2024-01-22
8:2 FTSND—Below MRL2024-01-22
lithiumND—Below MRL2024-01-22
PFPeAND—Below MRL2024-01-22
PFEESAND—Below MRL2024-01-22
PFPeSND—Below MRL2024-01-22
PFHpSND—Below MRL2024-01-22
PFTAND—Below MRL2024-01-22
PFTrDAND—Below MRL2024-01-22
NEtFOSAAND—Below MRL2024-01-22
4:2 FTSND—Below MRL2024-01-22
PFMBAND—Below MRL2024-01-22
PFMPAND—Below MRL2024-01-22
NEtFOSAAND—Below MRL2024-04-24
9Cl-PF3ONSND—Below MRL2024-04-24
ADONAND—Below MRL2024-04-24
4:2 FTSND—Below MRL2024-04-24
PFMPAND—Below MRL2024-04-24
PFPeAND—Below MRL2024-04-24
lithiumND—Below MRL2024-04-24
PFMBAND—Below MRL2024-04-24
11Cl-PF3OUdSND—Below MRL2024-04-24
PFTrDAND—Below MRL2024-04-24
HFPO-DAND10Below MRL2024-04-24
6:2 FTSND—Below MRL2024-04-24
PFBAND—Below MRL2024-04-24
PFHpSND—Below MRL2024-04-24
PFPeSND—Below MRL2024-04-24
NFDHAND—Below MRL2024-04-24
PFEESAND—Below MRL2024-04-24
PFHxSND10Below MRL2024-04-24
PFTAND—Below MRL2024-04-24
PFNAND10Below MRL2024-04-24
8:2 FTSND—Below MRL2024-04-24
PFUnAND—Below MRL2024-04-24
NMeFOSAAND—Below MRL2024-04-24
PFHpAND—Below MRL2024-04-24
PFOSND4Below MRL2024-04-24
PFOAND4Below MRL2024-04-24
PFDAND—Below MRL2024-04-24
PFDoAND—Below MRL2024-04-24
PFHxAND—Below MRL2024-04-24
PFMPAND—Below MRL2024-07-08
PFEESAND—Below MRL2024-07-08
PFHxSND10Below MRL2024-07-08
PFMBAND—Below MRL2024-07-08
8:2 FTSND—Below MRL2024-07-08
PFHpAND—Below MRL2024-07-08
PFNAND10Below MRL2024-07-08
PFOSND4Below MRL2024-07-08
PFDAND—Below MRL2024-07-08
PFDoAND—Below MRL2024-07-08
NFDHAND—Below MRL2024-07-08
PFPeSND—Below MRL2024-07-08
PFHpSND—Below MRL2024-07-08
4:2 FTSND—Below MRL2024-07-08
PFUnAND—Below MRL2024-07-08
PFTrDAND—Below MRL2024-07-08
6:2 FTSND—Below MRL2024-07-08
9Cl-PF3ONSND—Below MRL2024-07-08
PFTAND—Below MRL2024-07-08
NEtFOSAAND—Below MRL2024-07-08
NMeFOSAAND—Below MRL2024-07-08
11Cl-PF3OUdSND—Below MRL2024-07-08
ADONAND—Below MRL2024-07-08
HFPO-DAND10Below MRL2024-07-08
PFBAND—Below MRL2024-07-08
lithiumND—Below MRL2024-07-08
lithiumND—Below MRL2024-10-15
8:2 FTSND—Below MRL2024-10-15
PFBAND—Below MRL2024-10-15
6:2 FTSND—Below MRL2024-10-15
4:2 FTSND—Below MRL2024-10-15
PFMPAND—Below MRL2024-10-15
PFPeAND—Below MRL2024-10-15
PFMBAND—Below MRL2024-10-15
HFPO-DAND10Below MRL2024-10-15
PFPeSND—Below MRL2024-10-15
PFUnAND—Below MRL2024-10-15
PFEESAND—Below MRL2024-10-15
PFHpAND—Below MRL2024-10-15
NFDHAND—Below MRL2024-10-15
PFDoAND—Below MRL2024-10-15
PFHxAND—Below MRL2024-10-15
PFTAND—Below MRL2024-10-15
PFTrDAND—Below MRL2024-10-15
NEtFOSAAND—Below MRL2024-10-15
9Cl-PF3ONSND—Below MRL2024-10-15
PFBSND—Below MRL2024-10-15
ADONAND—Below MRL2024-10-15
PFHxSND10Below MRL2024-10-15
PFNAND10Below MRL2024-10-15
PFOA4.24Exceeds2024-07-08
PFBS3.8—2024-04-24
PFBS3.7—2024-07-08
PFBS3.4—2024-01-22
PFPeA3.4—2024-07-08
PFHxA3.1—2024-07-08

Next steps