LIBBY CITY OF

PWSID: MT0000274 · LIBBY, MT · Serving 4,892 people

Type: CWSOwner: LSource: SW

Compliant

All PFAS compounds below EPA Maximum Contaminant Levels.

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

Exact contamination levels

Upgrade to Pro to see PFOA/PFOS ppt values and MCL comparison charts.

PFAS compounds detected

N/A ppt

Highest single detection

Highest detection

Pro feature

2025-08-18

Latest sample date

partial

Data completeness

All PFAS detection results

Source: EPA UCMR5 (UCMR5) · 87 compounds tested

Contaminant	Result (ppt)	MCL (ppt)	Status	Sample date
PFMPA	ND	—	Below MRL	2025-02-18
PFDoA	ND	—	Below MRL	2025-02-18

85 more results hidden