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Is there PFAS in City of Cody water?

No PFAS were detected in any of the 4 samples EPA's program collected.

City of Cody Serves 10,224 people · 4 PFOA samples from 1 sampling point · Feb 2025 to Nov 2025 No PFAS detected
PFOA Perfluorooctanoic acid not detected
EPA 4
PFOS Perfluorooctanesulfonic acid not detected
EPA 4
Averages are for the worst sampling point, with non-detects counted as zero. Source: EPA UCMR 5.

City of Cody is a public water system drawing on surface water, based in Cody, Wyoming, serving about 10,224 people. Under EPA's Fifth Unregulated Contaminant Monitoring Rule it was tested for 29 PFAS and lithium 4 times across 1 sampling point between Feb 2025 and Nov 2025.

Every PFAS detected

None of the 29 PFAS were found at or above EPA's minimum reporting levels (2 to 20 ppt depending on the compound).

Not detected: PFHxS, PFBA, 6:2 FTS, 4:2 FTS, 8:2 FTS, PFMPA, PFPeA, PFMBA, ADONA, NFDHA, 9Cl-PF3ONS, PFPeS, PFHpS, PFNA, PFOS, PFHpA, PFBS, PFEESA, PFOA, NMeFOSAA, NEtFOSAA, HFPO-DA, 11Cl-PF3OUdS, PFTA, PFTrDA, PFDA, PFDoA, PFHxA, PFUnA.

Lithium, tested in the same program: not detected.

What the EPA limits mean here

In April 2024 EPA set enforceable limits of 4 ppt for PFOA and PFOS, 10 ppt each for PFHxS, PFNA and GenX, and a hazard index of 1 for mixtures. Utilities were given until 2029 to comply. In May 2026 EPA proposed keeping only the PFOA and PFOS limits and moving that deadline to 2031. Until that proposal is final, the 2024 limits stand.

Compliance is judged on a running annual average at each entry point, so we show the average at this system's worst sampling point next to its single highest result. UCMR 5 results do not by themselves put a utility in or out of compliance.

What you can do at home

No PFAS action is needed on these results. If your water tastes or smells of chlorine, a whole-house city water filter is the usual fix.

Other systems in Wyoming

All 33 tested systems in Wyoming

ZIP codes served

82414

As reported by the utility to EPA. Neighbouring ZIPs are often split between systems; your water bill names yours.

Cite this page

Well & Tap. "PFAS in City of Cody water: EPA UCMR 5 results." Data: U.S. EPA Fifth Unregulated Contaminant Monitoring Rule, final release August 2026, PWSID WY5600207. https://wellandtap.com/pfas/wyoming/city-of-cody/

About this data

Source: U.S. EPA, UCMR 5 occurrence data, final release August 2026 (PWSID WY5600207). Population: EPA SDWIS. Averages count results below the reporting level as zero, the same convention EPA uses for running annual averages. Full method.