PFAS Comply

ST JOHN WATER DISTRICT 1

PWSID: LA1095003 · LAPLACE, LA · Serving 10,484 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

2
PFAS compounds detected
10300 ppt
Highest single detection
2025-09-23
Latest sample date
partial
Data completeness

All PFAS detection results

Source: EPA UCMR5 (UCMR5)

ContaminantResult (ppt)MCL (ppt)StatusSample date
HFPO-DAND10Below MRL2025-09-23
NEtFOSAAND—Below MRL2025-03-25
PFMBAND—Below MRL2025-03-25
4:2 FTSND—Below MRL2025-03-25
8:2 FTSND—Below MRL2025-03-25
PFMPAND—Below MRL2025-03-25
PFPeAND—Below MRL2025-03-25
PFEESAND—Below MRL2025-03-25
NFDHAND—Below MRL2025-03-25
PFPeSND—Below MRL2025-03-25
PFHpSND—Below MRL2025-03-25
NMeFOSAAND—Below MRL2025-03-25
PFTrDAND—Below MRL2025-03-25
HFPO-DAND10Below MRL2025-03-25
PFTAND—Below MRL2025-03-25
PFNAND10Below MRL2025-03-25
ADONAND—Below MRL2025-03-25
PFHpAND—Below MRL2025-03-25
6:2 FTSND—Below MRL2025-03-25
lithiumND—Below MRL2025-03-25
PFHxSND10Below MRL2025-03-25
PFBSND—Below MRL2025-03-25
PFOSND4Below MRL2025-03-25
PFOAND4Below MRL2025-03-25
PFDAND—Below MRL2025-03-25
PFDoAND—Below MRL2025-03-25
PFHxAND—Below MRL2025-03-25
PFUnAND—Below MRL2025-03-25
11Cl-PF3OUdSND—Below MRL2025-03-25
9Cl-PF3ONSND—Below MRL2025-03-25
PFHpSND—Below MRL2025-06-30
PFEESAND—Below MRL2025-06-30
NFDHAND—Below MRL2025-06-30
PFPeSND—Below MRL2025-06-30
PFMBAND—Below MRL2025-06-30
lithiumND—Below MRL2025-06-18
PFTAND—Below MRL2025-06-30
PFTrDAND—Below MRL2025-06-30
PFPeAND—Below MRL2025-06-30
NMeFOSAAND—Below MRL2025-06-30
9Cl-PF3ONSND—Below MRL2025-06-30
PFDAND—Below MRL2025-06-30
NEtFOSAAND—Below MRL2025-06-30
PFUnAND—Below MRL2025-06-30
PFBSND—Below MRL2025-06-30
PFHpAND—Below MRL2025-06-30
PFHxSND10Below MRL2025-06-30
PFNAND10Below MRL2025-06-30
PFOAND4Below MRL2025-06-30
HFPO-DAND10Below MRL2025-06-30
PFHxAND—Below MRL2025-06-30
PFMPAND—Below MRL2025-06-30
11Cl-PF3OUdSND—Below MRL2025-06-30
ADONAND—Below MRL2025-06-30
PFBAND—Below MRL2025-06-30
6:2 FTSND—Below MRL2025-06-30
4:2 FTSND—Below MRL2025-06-30
8:2 FTSND—Below MRL2025-06-30
PFDoAND—Below MRL2025-06-30
PFOSND4Below MRL2025-06-30
PFPeAND—Below MRL2025-09-23
PFOSND4Below MRL2025-09-23
PFNAND10Below MRL2025-09-23
PFHxSND10Below MRL2025-09-23
PFHpAND—Below MRL2025-09-23
PFBSND—Below MRL2025-09-23
PFPeSND—Below MRL2025-09-23
PFOAND4Below MRL2025-09-23
PFMBAND—Below MRL2025-09-23
PFHpSND—Below MRL2025-09-23
PFMPAND—Below MRL2025-09-23
8:2 FTSND—Below MRL2025-09-23
4:2 FTSND—Below MRL2025-09-23
6:2 FTSND—Below MRL2025-09-23
PFDoAND—Below MRL2025-09-23
PFBAND—Below MRL2025-03-25
NMeFOSAAND—Below MRL2025-09-23
PFEESAND—Below MRL2025-09-23
ADONAND—Below MRL2025-09-23
PFTAND—Below MRL2025-09-23
PFTrDAND—Below MRL2025-09-23
NEtFOSAAND—Below MRL2025-09-23
PFDAND—Below MRL2025-09-23
NFDHAND—Below MRL2025-09-23
9Cl-PF3ONSND—Below MRL2025-09-23
11Cl-PF3OUdSND—Below MRL2025-09-23
PFUnAND—Below MRL2025-09-23
PFHxAND—Below MRL2025-09-23
lithium10300—2025-09-23
PFBA6—2025-09-23

Next steps

ST JOHN WATER DISTRICT 1 PFAS results — LAPLACE, LA | PFAS Comply