PFAS Comply

LYON-SIOUX RWS-BIG SIOUX

PWSID: IA6000755 · ROCK RAPIDS, IA · Serving 1,530 people

Type: CWSOwner: PSource: GW
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

1
PFAS compounds detected
77000 ppt
Highest single detection
2025-04-14
Latest sample date
partial
Data completeness

All PFAS detection results

Source: EPA UCMR5 (UCMR5)

ContaminantResult (ppt)MCL (ppt)StatusSample date
PFDAND—Below MRL2025-10-13
PFDAND—Below MRL2025-04-14
PFOAND4Below MRL2025-04-14
PFOSND4Below MRL2025-04-14
PFNAND10Below MRL2025-04-14
PFDoAND—Below MRL2025-04-14
PFHpAND—Below MRL2025-04-14
PFBSND—Below MRL2025-04-14
PFTrDAND—Below MRL2025-04-14
PFHxAND—Below MRL2025-04-14
NMeFOSAAND—Below MRL2025-04-14
PFTAND—Below MRL2025-04-14
ADONAND—Below MRL2025-10-13
HFPO-DAND10Below MRL2025-10-13
PFBAND—Below MRL2025-10-13
6:2 FTSND—Below MRL2025-10-13
4:2 FTSND—Below MRL2025-10-13
PFHxSND10Below MRL2025-04-14
NEtFOSAAND—Below MRL2025-04-14
PFUnAND—Below MRL2025-04-14
11Cl-PF3OUdSND—Below MRL2025-04-14
9Cl-PF3ONSND—Below MRL2025-04-14
ADONAND—Below MRL2025-04-14
PFBAND—Below MRL2025-04-14
6:2 FTSND—Below MRL2025-04-14
4:2 FTSND—Below MRL2025-04-14
PFHpSND—Below MRL2025-04-14
PFMPAND—Below MRL2025-04-14
PFPeAND—Below MRL2025-04-14
PFPeSND—Below MRL2025-04-14
NFDHAND—Below MRL2025-04-14
PFEESAND—Below MRL2025-04-14
PFMBAND—Below MRL2025-04-14
HFPO-DAND10Below MRL2025-04-14
8:2 FTSND—Below MRL2025-04-14
PFMPAND—Below MRL2025-10-13
PFHpAND—Below MRL2025-10-13
PFHxSND10Below MRL2025-10-13
PFNAND10Below MRL2025-10-13
PFOSND4Below MRL2025-10-13
PFOAND4Below MRL2025-10-13
PFDAND—Below MRL2025-10-13
PFDoAND—Below MRL2025-10-13
PFHxAND—Below MRL2025-10-13
ADONAND—Below MRL2025-10-13
HFPO-DAND10Below MRL2025-10-13
PFBAND—Below MRL2025-10-13
6:2 FTSND—Below MRL2025-10-13
PFBSND—Below MRL2025-10-13
8:2 FTSND—Below MRL2025-10-13
PFTAND—Below MRL2025-10-13
PFPeAND—Below MRL2025-10-13
PFMBAND—Below MRL2025-10-13
PFEESAND—Below MRL2025-10-13
NFDHAND—Below MRL2025-10-13
PFPeSND—Below MRL2025-10-13
PFHpSND—Below MRL2025-10-13
PFUnAND—Below MRL2025-10-13
11Cl-PF3OUdSND—Below MRL2025-10-13
9Cl-PF3ONSND—Below MRL2025-10-13
PFTrDAND—Below MRL2025-10-13
NMeFOSAAND—Below MRL2025-10-13
4:2 FTSND—Below MRL2025-10-13
NEtFOSAAND—Below MRL2025-10-13
11Cl-PF3OUdSND—Below MRL2025-04-14
NEtFOSAAND—Below MRL2025-04-14
PFNAND10Below MRL2025-04-14
PFOSND4Below MRL2025-04-14
PFOAND4Below MRL2025-04-14
PFDAND—Below MRL2025-04-14
PFDoAND—Below MRL2025-04-14
PFUnAND—Below MRL2025-04-14
9Cl-PF3ONSND—Below MRL2025-04-14
ADONAND—Below MRL2025-04-14
HFPO-DAND10Below MRL2025-04-14
PFBAND—Below MRL2025-04-14
6:2 FTSND—Below MRL2025-04-14
4:2 FTSND—Below MRL2025-04-14
PFHpAND—Below MRL2025-04-14
PFTrDAND—Below MRL2025-04-14
PFHxAND—Below MRL2025-04-14
8:2 FTSND—Below MRL2025-04-14
PFTAND—Below MRL2025-04-14
PFHxSND10Below MRL2025-04-14
NMeFOSAAND—Below MRL2025-04-14
PFBSND—Below MRL2025-04-14
PFHpSND—Below MRL2025-04-14
PFPeSND—Below MRL2025-04-14
NFDHAND—Below MRL2025-04-14
PFEESAND—Below MRL2025-04-14
PFMBAND—Below MRL2025-04-14
PFPeAND—Below MRL2025-04-14
PFMPAND—Below MRL2025-04-14
8:2 FTSND—Below MRL2025-10-13
PFPeSND—Below MRL2025-10-13
PFMPAND—Below MRL2025-10-13
PFPeAND—Below MRL2025-10-13
PFMBAND—Below MRL2025-10-13
PFEESAND—Below MRL2025-10-13
NFDHAND—Below MRL2025-10-13
PFHpSND—Below MRL2025-10-13
PFBSND—Below MRL2025-10-13
ADONAND—Below MRL2025-10-13
HFPO-DAND10Below MRL2025-10-13
PFBAND—Below MRL2025-10-13
11Cl-PF3OUdSND—Below MRL2025-10-13
6:2 FTSND—Below MRL2025-10-13
NEtFOSAAND—Below MRL2025-10-13
4:2 FTSND—Below MRL2025-10-13
9Cl-PF3ONSND—Below MRL2025-10-13
NMeFOSAAND—Below MRL2025-10-13
PFTAND—Below MRL2025-10-13
PFHpAND—Below MRL2025-10-13
PFHxSND10Below MRL2025-10-13
PFNAND10Below MRL2025-10-13
PFOAND4Below MRL2025-10-13
PFDAND—Below MRL2025-10-13
PFDoAND—Below MRL2025-10-13
PFHxAND—Below MRL2025-10-13
PFTrDAND—Below MRL2025-10-13
PFOSND4Below MRL2025-10-13
PFUnAND—Below MRL2025-10-13
6:2 FTSND—Below MRL2025-04-14
NFDHAND—Below MRL2025-04-14
PFEESAND—Below MRL2025-04-14
PFMBAND—Below MRL2025-04-14
PFPeAND—Below MRL2025-04-14
PFMPAND—Below MRL2025-04-14
4:2 FTSND—Below MRL2025-04-14
PFBAND—Below MRL2025-04-14
PFPeSND—Below MRL2025-04-14
PFOAND4Below MRL2025-04-14
9Cl-PF3ONSND—Below MRL2025-04-14
8:2 FTSND—Below MRL2025-04-14
PFHxAND—Below MRL2025-04-14
NEtFOSAAND—Below MRL2025-04-14
PFTrDAND—Below MRL2025-04-14
PFTAND—Below MRL2025-04-14
ADONAND—Below MRL2025-04-14
NMeFOSAAND—Below MRL2025-04-14
PFNAND10Below MRL2025-04-14
PFUnAND—Below MRL2025-04-14
PFHpSND—Below MRL2025-04-14
PFDoAND—Below MRL2025-04-14
PFDAND—Below MRL2025-04-14
PFOSND4Below MRL2025-04-14
PFHxSND10Below MRL2025-04-14
PFHpAND—Below MRL2025-04-14
PFBSND—Below MRL2025-04-14
11Cl-PF3OUdSND—Below MRL2025-04-14
HFPO-DAND10Below MRL2025-04-14
PFNAND10Below MRL2025-10-13
PFMBAND—Below MRL2025-10-13
PFEESAND—Below MRL2025-10-13
NFDHAND—Below MRL2025-10-13
PFPeSND—Below MRL2025-10-13
PFHpSND—Below MRL2025-10-13
PFBSND—Below MRL2025-10-13
PFMPAND—Below MRL2025-10-13
PFHxSND10Below MRL2025-10-13
PFTAND—Below MRL2025-10-13
PFOSND4Below MRL2025-10-13
PFPeAND—Below MRL2025-10-13
PFTrDAND—Below MRL2025-10-13
NEtFOSAAND—Below MRL2025-10-13
NMeFOSAAND—Below MRL2025-10-13
PFHpAND—Below MRL2025-10-13
PFHxAND—Below MRL2025-10-13
8:2 FTSND—Below MRL2025-10-13
PFDoAND—Below MRL2025-10-13
PFOAND4Below MRL2025-10-13
PFUnAND—Below MRL2025-10-13
11Cl-PF3OUdSND—Below MRL2025-10-13
9Cl-PF3ONSND—Below MRL2025-10-13
lithium77000—2025-10-13
lithium75000—2025-10-13
lithium69000—2025-04-14
lithium69000—2025-10-13
lithium68000—2025-04-14
lithium56000—2025-04-14

Next steps