Yes, at low levels. 2 PFAS were detected, all below EPA's 2024 limits.
Also detected, no federal limit: PFHxA, PFPeA.
Las Vegas Valley Water District is a public water system drawing on surface water, based in Las Vegas, Nevada, serving about 1.5 million people. Under EPA's Fifth Unregulated Contaminant Monitoring Rule it was tested for 29 PFAS and lithium 59 times across 20 sampling points between Feb 2025 and Dec 2025.
| PFAS | Detected | Highest | Worst point avg | EPA limit |
|---|---|---|---|---|
| PFHxA Perfluorohexanoic acid |
2 of 59 | 5.6 ppt | 1.4 ppt | none |
| PFPeA Perfluoropentanoic acid |
2 of 59 | 4.8 ppt | 1.2 ppt | none |
Not detected: PFTrDA, PFUnA, 11Cl-PF3OUdS, 9Cl-PF3ONS, ADONA, HFPO-DA, PFBA, 6:2 FTS, 4:2 FTS, NMeFOSAA, PFTA, NEtFOSAA, PFOA, PFDA, 8:2 FTS, PFHpS, PFDoA, PFPeS, PFMPA, PFMBA, PFEESA, NFDHA, PFBS, PFHpA, PFHxS, PFOS, PFNA.
Lithium, tested in the same program: highest 43.3 ppb, detected in 50 of 59 samples. EPA's health-based screening level is 10 ppb.
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.
Levels here are under EPA's limits, so no treatment is required. If you want them lower anyway, a certified reverse osmosis system under the sink handles drinking water, and a whole-house carbon filter also takes out the chlorine or chloramine your utility adds.
All 59 tested systems in Nevada
89101 89102 89103 89104 89106 89107 89108 89109 89110 89113 89117 89118 89119 89120 89121 89122 89123 89128 89129 89130 89131 89134 89135 89138 89139 89141 89142 89143 89144 89145 89146 89147 89148 89149 89154 89158 89166 89169 89179 89183
As reported by the utility to EPA. Neighbouring ZIPs are often split between systems; your water bill names yours.
Well & Tap. "PFAS in Las Vegas Valley Water District water: EPA UCMR 5 results." Data: U.S. EPA Fifth Unregulated Contaminant Monitoring Rule, final release August 2026, PWSID NV0000090. https://wellandtap.com/pfas/nevada/las-vegas-valley-water-district/
Source: U.S. EPA, UCMR 5 occurrence data, final release August 2026 (PWSID NV0000090). Population: EPA SDWIS. Averages count results below the reporting level as zero, the same convention EPA uses for running annual averages. Full method.
