Is there PFAS in Town of Payson water?
Yes. EPA's final UCMR 5 results show Town of Payson averaged 39.7 ppt of PFOA at its worst sampling point, 9.9 times the EPA limit of 4 ppt.
Town of Payson
Serves 17,682 people · 52 PFOA samples from 25 sampling points · Mar 2023 to May 2024
Average above an EPA limit
PFOA Perfluorooctanoic acid
39.7 ppt avg · max 40.9
PFOS Perfluorooctanesulfonic acid
36.9 ppt avg · max 42.2
PFHxS Perfluorohexanesulfonic acid
20.6 ppt avg · max 22.7
Hazard index GenX, PFBS, PFNA, PFHxS combined
2.1 avg · max 2.3
Also detected, no federal limit: PFBS, PFPeA, PFHxA, PFBA, PFHpA, PFDA.
Town of Payson is a public water system drawing on groundwater, based in Payson, Arizona, serving about 17,682 people. Under EPA's Fifth Unregulated Contaminant Monitoring Rule it was tested for 29 PFAS and lithium 52 times across 25 sampling points between Mar 2023 and May 2024.
Every PFAS detected
Not detected: 9Cl-PF3ONS, PFTrDA, NEtFOSAA, NMeFOSAA, PFNA, PFDoA, PFTA, 11Cl-PF3OUdS, ADONA, HFPO-DA, 6:2 FTS, 4:2 FTS, 8:2 FTS, PFMPA, PFMBA, PFEESA, NFDHA, PFPeS, PFUnA, PFHpS.
Lithium, tested in the same program: highest 57.2 ppb, detected in 41 of 52 samples. EPA's health-based screening level is 10 ppb.
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
Two routes work for PFAS. For drinking and cooking water only, a reverse osmosis system certified to NSF/ANSI 58 with a PFOA/PFOS reduction claim is the cheapest proven option. To treat every tap and shower, a whole-house carbon system with enough contact time works, but check that the maker has PFAS test data, not just a marketing claim. See the best filters for PFAS and how PFAS removal works.
Other systems in Arizona
All 152 tested systems in Arizona
ZIP codes served
85541
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 Town of Payson water: EPA UCMR 5 results." Data: U.S. EPA Fifth Unregulated Contaminant Monitoring Rule, final release August 2026, PWSID AZ0404032. https://wellandtap.com/pfas/arizona/town-of-payson/
About this data
Source: U.S. EPA, UCMR 5 occurrence data, final release August 2026 (PWSID AZ0404032). Population: EPA SDWIS. Averages count results below the reporting level as zero, the same convention EPA uses for running annual averages. Full method.
