PFAS Comply

OFALLON PWS

PWSID: MO6010588 · O FALLON, MO · Serving 32,515 people

Type: CWSOwner: LSource: SW
Settlement eligible
May qualify for 3M/DuPont settlement funds
Check claims portal →
Compliant

All PFAS compounds below EPA Maximum Contaminant Levels.

Key contaminants vs MCL

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

Detection summary

3
PFAS compounds detected
71300 ppt
Highest single detection
2025-09-15
Latest sample date
partial
Data completeness

All PFAS detection results

Source: EPA UCMR5 (UCMR5)

ContaminantResult (ppt)MCL (ppt)StatusSample date
PFPeAND—Below MRL2024-08-19
11Cl-PF3OUdSND—Below MRL2024-02-28
PFUnAND—Below MRL2024-02-28
PFMPAND—Below MRL2024-08-19
PFMBAND—Below MRL2024-08-19
lithiumND—Below MRL2024-08-19
NFDHAND—Below MRL2024-08-19
PFPeSND—Below MRL2024-08-19
PFHpSND—Below MRL2024-08-19
PFBSND—Below MRL2024-08-19
PFHpAND—Below MRL2024-08-19
PFHxSND10Below MRL2024-08-19
PFNAND10Below MRL2024-08-19
PFOSND4Below MRL2024-08-19
9Cl-PF3ONSND—Below MRL2024-02-28
PFHxAND—Below MRL2024-02-28
PFDoAND—Below MRL2024-02-28
PFBSND—Below MRL2024-02-28
NEtFOSAAND—Below MRL2024-02-28
PFDAND—Below MRL2024-02-28
PFHpAND—Below MRL2024-02-28
PFOAND4Below MRL2024-02-28
PFHxSND10Below MRL2024-02-28
ADONAND—Below MRL2024-02-28
PFEESAND—Below MRL2024-02-28
PFNAND10Below MRL2024-02-28
NMeFOSAAND—Below MRL2024-02-28
NFDHAND—Below MRL2024-02-28
PFTAND—Below MRL2024-02-28
PFTrDAND—Below MRL2024-02-28
PFHpSND—Below MRL2024-02-28
PFPeSND—Below MRL2024-02-28
HFPO-DAND10Below MRL2024-02-28
PFMBAND—Below MRL2024-02-28
PFOSND4Below MRL2024-02-28
PFMPAND—Below MRL2024-02-28
8:2 FTSND—Below MRL2024-02-28
4:2 FTSND—Below MRL2024-02-28
6:2 FTSND—Below MRL2024-02-28
PFHpAND—Below MRL2024-06-05
PFBSND—Below MRL2024-06-05
NEtFOSAAND—Below MRL2024-06-05
PFTrDAND—Below MRL2024-06-05
NFDHAND—Below MRL2024-06-05
PFBAND—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
9Cl-PF3ONSND—Below MRL2024-06-05
PFHpSND—Below MRL2024-06-05
HFPO-DAND10Below MRL2024-06-05
NMeFOSAAND—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
PFPeSND—Below MRL2024-06-05
PFTAND—Below MRL2024-06-05
ADONAND—Below MRL2024-06-05
PFPeSND—Below MRL2025-09-15
NFDHAND—Below MRL2025-09-15
PFMBAND—Below MRL2025-09-15
PFPeAND—Below MRL2025-09-15
PFMPAND—Below MRL2025-09-15
PFEESAND—Below MRL2025-09-15
PFHpSND—Below MRL2025-09-15
NEtFOSAAND—Below MRL2025-09-15
PFTrDAND—Below MRL2025-09-15
PFTAND—Below MRL2025-09-15
4:2 FTSND—Below MRL2025-09-15
6:2 FTSND—Below MRL2025-09-15
NMeFOSAAND—Below MRL2025-09-15
PFNAND10Below MRL2025-09-15
PFBSND—Below MRL2025-09-15
PFHxSND10Below MRL2025-09-15
PFOSND4Below MRL2025-09-15
PFOAND4Below MRL2025-09-15
PFDAND—Below MRL2025-09-15
PFDoAND—Below MRL2025-09-15
PFHxAND—Below MRL2025-09-15
11Cl-PF3OUdSND—Below MRL2025-09-15
9Cl-PF3ONSND—Below MRL2025-09-15
ADONAND—Below MRL2025-09-15
HFPO-DAND10Below MRL2025-09-15
8:2 FTSND—Below MRL2025-09-15
PFBAND—Below MRL2025-09-15
PFUnAND—Below MRL2025-09-15
PFHpAND—Below MRL2025-09-15
PFBSND—Below MRL2024-12-04
9Cl-PF3ONSND—Below MRL2024-12-04
11Cl-PF3OUdSND—Below MRL2024-12-04
PFUnAND—Below MRL2024-12-04
PFDoAND—Below MRL2024-12-04
PFOAND4Below MRL2024-12-04
PFOSND4Below MRL2024-12-04
PFNAND10Below MRL2024-12-04
PFHpAND—Below MRL2024-12-04
ADONAND—Below MRL2024-12-04
NFDHAND—Below MRL2024-12-04
PFHxSND10Below MRL2024-12-04
HFPO-DAND10Below MRL2024-12-04
PFBAND—Below MRL2024-12-04
6:2 FTSND—Below MRL2024-12-04
4:2 FTSND—Below MRL2024-12-04
8:2 FTSND—Below MRL2024-12-04
PFMPAND—Below MRL2024-12-04
PFPeAND—Below MRL2024-12-04
PFEESAND—Below MRL2024-12-04
PFDAND—Below MRL2024-12-04
PFPeSND—Below MRL2024-12-04
PFHpSND—Below MRL2024-12-04
PFMBAND—Below MRL2024-12-04
NEtFOSAAND—Below MRL2024-12-04
PFTrDAND—Below MRL2024-12-04
NMeFOSAAND—Below MRL2024-12-04
PFHxAND—Below MRL2024-12-04
PFTAND—Below MRL2024-12-04
NEtFOSAAND—Below MRL2024-02-28
PFMBAND—Below MRL2024-02-28
PFTAND—Below MRL2024-02-28
PFHpSND—Below MRL2024-02-28
PFTrDAND—Below MRL2024-02-28
PFDAND—Below MRL2024-02-28
PFBSND—Below MRL2024-02-28
PFHpAND—Below MRL2024-02-28
PFHxSND10Below MRL2024-02-28
PFNAND10Below MRL2024-02-28
PFOSND4Below MRL2024-02-28
PFOAND4Below MRL2024-02-28
PFPeSND—Below MRL2024-02-28
NMeFOSAAND—Below MRL2024-02-28
PFDoAND—Below MRL2024-02-28
NFDHAND—Below MRL2024-02-28
PFEESAND—Below MRL2024-02-28
PFPeAND—Below MRL2024-02-28
PFMPAND—Below MRL2024-02-28
8:2 FTSND—Below MRL2024-02-28
4:2 FTSND—Below MRL2024-02-28
6:2 FTSND—Below MRL2024-02-28
HFPO-DAND10Below MRL2024-02-28
ADONAND—Below MRL2024-02-28
9Cl-PF3ONSND—Below MRL2024-02-28
11Cl-PF3OUdSND—Below MRL2024-02-28
PFBAND—Below MRL2024-02-28
PFHxAND—Below MRL2024-02-28
PFUnAND—Below MRL2024-02-28
PFPeSND—Below MRL2024-10-08
6:2 FTSND—Below MRL2024-10-08
4:2 FTSND—Below MRL2024-10-08
8:2 FTSND—Below MRL2024-10-08
PFMPAND—Below MRL2024-10-08
PFPeAND—Below MRL2024-10-08
PFMBAND—Below MRL2024-10-08
PFTAND—Below MRL2024-08-19
NFDHAND—Below MRL2024-10-08
PFHpSND—Below MRL2024-10-08
PFBAND—Below MRL2024-10-08
NMeFOSAAND—Below MRL2024-08-19
PFTrDAND—Below MRL2024-08-19
PFEESAND—Below MRL2024-10-08
PFOAND4Below MRL2024-10-08
NEtFOSAAND—Below MRL2024-08-19
PFBSND—Below MRL2024-10-08
PFHpAND—Below MRL2024-10-08
PFHxSND10Below MRL2024-10-08
PFDoAND—Below MRL2024-10-08
PFOSND4Below MRL2024-10-08
HFPO-DAND10Below MRL2024-10-08
PFDAND—Below MRL2024-10-08
PFHxAND—Below MRL2024-10-08
PFUnAND—Below MRL2024-10-08
11Cl-PF3OUdSND—Below MRL2024-10-08
9Cl-PF3ONSND—Below MRL2024-10-08
ADONAND—Below MRL2024-10-08
PFNAND10Below MRL2024-10-08
PFBAND—Below MRL2024-02-28
11Cl-PF3OUdSND—Below MRL2024-02-28
ADONAND—Below MRL2024-02-28
PFTAND—Below MRL2024-02-28
PFPeAND—Below MRL2024-02-28
PFMPAND—Below MRL2024-02-28
8:2 FTSND—Below MRL2024-02-28
4:2 FTSND—Below MRL2024-02-28
6:2 FTSND—Below MRL2024-02-28
PFHpSND—Below MRL2024-02-28
9Cl-PF3ONSND—Below MRL2024-02-28
PFUnAND—Below MRL2024-02-28
PFHxAND—Below MRL2024-02-28
PFDoAND—Below MRL2024-02-28
PFDAND—Below MRL2024-02-28
PFMBAND—Below MRL2024-02-28
PFTrDAND—Below MRL2024-02-28
HFPO-DAND10Below MRL2024-02-28
NMeFOSAAND—Below MRL2024-02-28
PFOAND4Below MRL2024-02-28
PFEESAND—Below MRL2024-02-28
NFDHAND—Below MRL2024-02-28
PFPeSND—Below MRL2024-02-28
PFOSND4Below MRL2024-02-28
PFBSND—Below MRL2024-02-28
PFHpAND—Below MRL2024-02-28
PFHxSND10Below MRL2024-02-28
PFNAND10Below MRL2024-02-28
NEtFOSAAND—Below MRL2024-02-28
PFHxSND10Below MRL2024-10-08
PFHpAND—Below MRL2024-10-08
PFBSND—Below MRL2024-10-08
PFHpSND—Below MRL2024-10-08
9Cl-PF3ONSND—Below MRL2024-10-08
11Cl-PF3OUdSND—Below MRL2024-10-08
PFUnAND—Below MRL2024-10-08
PFDoAND—Below MRL2024-10-08
PFDAND—Below MRL2024-10-08
NFDHAND—Below MRL2024-10-08
PFNAND10Below MRL2024-10-08
PFHxAND—Below MRL2024-10-08
8:2 FTSND—Below MRL2024-10-08
PFTrDAND—Below MRL2024-08-19
PFPeSND—Below MRL2024-10-08
NMeFOSAAND—Below MRL2024-08-19
PFTAND—Below MRL2024-08-19
PFEESAND—Below MRL2024-10-08
PFMBAND—Below MRL2024-10-08
PFMPAND—Below MRL2024-10-08
PFOSND4Below MRL2024-10-08
4:2 FTSND—Below MRL2024-10-08
6:2 FTSND—Below MRL2024-10-08
PFBAND—Below MRL2024-10-08
HFPO-DAND10Below MRL2024-10-08
ADONAND—Below MRL2024-10-08
PFOAND4Below MRL2024-10-08
PFPeAND—Below MRL2024-10-08
NEtFOSAAND—Below MRL2024-08-19
PFOAND4Below MRL2024-02-28
PFEESAND—Below MRL2024-02-28
PFMBAND—Below MRL2024-02-28
PFPeAND—Below MRL2024-02-28
PFMPAND—Below MRL2024-02-28
8:2 FTSND—Below MRL2024-02-28
4:2 FTSND—Below MRL2024-02-28
6:2 FTSND—Below MRL2024-02-28
PFBAND—Below MRL2024-02-28
HFPO-DAND10Below MRL2024-02-28
ADONAND—Below MRL2024-02-28
9Cl-PF3ONSND—Below MRL2024-02-28
PFUnAND—Below MRL2024-02-28
NFDHAND—Below MRL2024-02-28
PFDAND—Below MRL2024-02-28
11Cl-PF3OUdSND—Below MRL2024-02-28
PFOSND4Below MRL2024-02-28
PFNAND10Below MRL2024-02-28
PFHxSND10Below MRL2024-02-28
PFHpAND—Below MRL2024-02-28
PFBSND—Below MRL2024-02-28
NMeFOSAAND—Below MRL2024-02-28
NEtFOSAAND—Below MRL2024-02-28
PFTrDAND—Below MRL2024-02-28
PFTAND—Below MRL2024-02-28
PFPeSND—Below MRL2024-02-28
PFDoAND—Below MRL2024-02-28
PFHpSND—Below MRL2024-02-28
PFHxAND—Below MRL2024-02-28
PFDoAND—Below MRL2024-10-08
PFMBAND—Below MRL2024-10-08
PFPeAND—Below MRL2024-10-08
PFMPAND—Below MRL2024-10-08
8:2 FTSND—Below MRL2024-10-08
11Cl-PF3OUdSND—Below MRL2024-10-08
PFUnAND—Below MRL2024-10-08
PFEESAND—Below MRL2024-10-08
PFOAND4Below MRL2024-10-08
PFDAND—Below MRL2024-10-08
PFHpAND—Below MRL2024-10-08
PFOSND4Below MRL2024-10-08
PFHxSND10Below MRL2024-10-08
PFHxAND—Below MRL2024-10-08
NMeFOSAAND—Below MRL2024-08-19
PFNAND10Below MRL2024-10-08
PFBSND—Below MRL2024-10-08
NEtFOSAAND—Below MRL2024-08-19
PFTrDAND—Below MRL2024-08-19
PFTAND—Below MRL2024-08-19
6:2 FTSND—Below MRL2024-10-08
PFBAND—Below MRL2024-10-08
ADONAND—Below MRL2024-10-08
9Cl-PF3ONSND—Below MRL2024-10-08
PFHpSND—Below MRL2024-10-08
PFPeSND—Below MRL2024-10-08
HFPO-DAND10Below MRL2024-10-08
NFDHAND—Below MRL2024-10-08
4:2 FTSND—Below MRL2024-10-08
NFDHAND—Below MRL2024-02-28
PFBAND—Below MRL2024-02-28
6:2 FTSND—Below MRL2024-02-28
4:2 FTSND—Below MRL2024-02-28
8:2 FTSND—Below MRL2024-02-28
PFMPAND—Below MRL2024-02-28
PFPeAND—Below MRL2024-02-28
PFEESAND—Below MRL2024-02-28
PFPeSND—Below MRL2024-02-28
HFPO-DAND10Below MRL2024-02-28
PFHpSND—Below MRL2024-02-28
PFOSND4Below MRL2024-02-28
PFMBAND—Below MRL2024-02-28
ADONAND—Below MRL2024-02-28
9Cl-PF3ONSND—Below MRL2024-02-28
11Cl-PF3OUdSND—Below MRL2024-02-28
PFUnAND—Below MRL2024-02-28
PFHxAND—Below MRL2024-02-28
PFDoAND—Below MRL2024-02-28
PFOAND4Below MRL2024-02-28
PFTAND—Below MRL2024-02-28
PFNAND10Below MRL2024-02-28
PFHxSND10Below MRL2024-02-28
PFHpAND—Below MRL2024-02-28
PFBSND—Below MRL2024-02-28
PFTrDAND—Below MRL2024-02-28
PFDAND—Below MRL2024-02-28
lithiumND—Below MRL2024-02-28
NEtFOSAAND—Below MRL2024-02-28
NMeFOSAAND—Below MRL2024-02-28
6:2 FTSND—Below MRL2024-08-19
PFDoAND—Below MRL2024-08-19
PFHxAND—Below MRL2024-08-19
PFUnAND—Below MRL2024-08-19
11Cl-PF3OUdSND—Below MRL2024-08-19
9Cl-PF3ONSND—Below MRL2024-08-19
ADONAND—Below MRL2024-08-19
PFDAND—Below MRL2024-08-19
PFBAND—Below MRL2024-08-19
PFTAND—Below MRL2024-08-19
NMeFOSAAND—Below MRL2024-08-19
NEtFOSAAND—Below MRL2024-08-19
PFTrDAND—Below MRL2024-08-19
4:2 FTSND—Below MRL2024-08-19
HFPO-DAND10Below MRL2024-08-19
PFEESAND—Below MRL2024-08-19
PFOAND4Below MRL2024-08-19
8:2 FTSND—Below MRL2024-08-19
lithium71300—2024-02-28
lithium59500—2024-08-19
lithium40400—2024-08-19
lithium38900—2024-02-28
lithium37000—2024-08-19
lithium36800—2024-02-28
lithium28100—2025-09-15
lithium27000—2024-02-28
lithium24800—2024-12-04
lithium15100—2024-06-05
PFBA6.1—2024-02-28
PFPeA3.4—2024-02-28

Next steps