PFAS Comply

TRI-COUNTY RURAL WATER SYSTEM

PWSID: SD4600112 · EAGLE BUTTE, SD · Serving 2,190 people

Type: CWSOwner: PSource: 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

1
PFAS compounds detected
64800 ppt
Highest single detection
2025-07-15
Latest sample date
partial
Data completeness

All PFAS detection results

Source: EPA UCMR5 (UCMR5)

ContaminantResult (ppt)MCL (ppt)StatusSample date
NMeFOSAAND—Below MRL2025-07-15
PFHxAND—Below MRL2025-01-06
PFDoAND—Below MRL2025-01-06
PFDAND—Below MRL2025-01-06
PFOAND4Below MRL2025-01-06
PFOSND4Below MRL2025-01-06
PFTrDAND—Below MRL2025-01-06
PFPeSND—Below MRL2025-01-06
6:2 FTSND—Below MRL2025-01-06
NEtFOSAAND—Below MRL2025-01-06
PFTAND—Below MRL2025-01-06
NFDHAND—Below MRL2025-01-06
PFEESAND—Below MRL2025-01-06
PFMBAND—Below MRL2025-01-06
PFPeAND—Below MRL2025-01-06
PFMPAND—Below MRL2025-01-06
NMeFOSAAND—Below MRL2025-01-06
4:2 FTSND—Below MRL2025-01-06
PFBSND—Below MRL2025-01-06
PFBAND—Below MRL2025-01-06
HFPO-DAND10Below MRL2025-01-06
ADONAND—Below MRL2025-01-06
9Cl-PF3ONSND—Below MRL2025-01-06
11Cl-PF3OUdSND—Below MRL2025-01-06
8:2 FTSND—Below MRL2025-01-06
PFHxSND10Below MRL2025-01-06
PFHpAND—Below MRL2025-01-06
PFUnAND—Below MRL2025-01-06
PFHxAND—Below MRL2025-07-15
PFUnAND—Below MRL2025-07-15
PFHpSND—Below MRL2025-01-06
PFNAND10Below MRL2025-01-06
PFDAND—Below MRL2025-04-14
PFBAND—Below MRL2025-04-14
HFPO-DAND10Below MRL2025-04-14
ADONAND—Below MRL2025-04-14
9Cl-PF3ONSND—Below MRL2025-04-14
11Cl-PF3OUdSND—Below MRL2025-04-14
PFUnAND—Below MRL2025-04-14
PFHpSND—Below MRL2025-04-14
PFDoAND—Below MRL2025-04-14
4:2 FTSND—Below MRL2025-04-14
PFOAND4Below MRL2025-04-14
PFOSND4Below MRL2025-04-14
PFNAND10Below MRL2025-04-14
PFHxAND—Below MRL2025-04-14
PFTrDAND—Below MRL2025-04-14
PFPeSND—Below MRL2025-04-14
PFHxSND10Below MRL2025-04-14
NFDHAND—Below MRL2025-04-14
PFEESAND—Below MRL2025-04-14
PFMBAND—Below MRL2025-04-14
PFHpAND—Below MRL2025-04-14
NEtFOSAAND—Below MRL2025-04-14
6:2 FTSND—Below MRL2025-04-14
PFTAND—Below MRL2025-04-14
NMeFOSAAND—Below MRL2025-04-14
PFMPAND—Below MRL2025-04-14
PFBSND—Below MRL2025-04-14
8:2 FTSND—Below MRL2025-04-14
PFPeAND—Below MRL2025-04-14
PFDoAND—Below MRL2025-07-15
PFMPAND—Below MRL2025-07-15
PFOAND4Below MRL2025-07-15
PFHpSND—Below MRL2025-07-15
PFPeSND—Below MRL2025-07-15
NFDHAND—Below MRL2025-07-15
PFEESAND—Below MRL2025-07-15
PFPeAND—Below MRL2025-07-15
4:2 FTSND—Below MRL2025-07-15
6:2 FTSND—Below MRL2025-07-15
PFBAND—Below MRL2025-07-15
HFPO-DAND10Below MRL2025-07-15
ADONAND—Below MRL2025-07-15
9Cl-PF3ONSND—Below MRL2025-07-15
PFBSND—Below MRL2025-07-15
PFTAND—Below MRL2025-07-15
PFMBAND—Below MRL2025-07-15
11Cl-PF3OUdSND—Below MRL2025-07-15
NEtFOSAAND—Below MRL2025-07-15
8:2 FTSND—Below MRL2025-07-15
PFTrDAND—Below MRL2025-07-15
PFHpAND—Below MRL2025-07-15
PFHxSND10Below MRL2025-07-15
PFNAND10Below MRL2025-07-15
PFOSND4Below MRL2025-07-15
PFDAND—Below MRL2025-07-15
lithium64800—2025-01-06
lithium49300—2025-04-14
lithium48300—2025-07-15

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