Yes, at low levels. 1 PFAS was detected, all below EPA's 2024 limits.
Also detected, no federal limit: PFBA.
Elsinore Valley Mwd is a public water system drawing on surface water, based in Lake Elsinore, California, serving about 169,455 people, including Palm Desert, Victorville, Riverside, Lake Elsinore, Moreno Valley, Murrieta. Under EPA's Fifth Unregulated Contaminant Monitoring Rule it was tested for 29 PFAS and lithium 22 times across 8 sampling points between Feb 2023 and Dec 2025.
| PFAS | Detected | Highest | Worst point avg | EPA limit |
|---|---|---|---|---|
| PFBA Perfluorobutanoic acid |
2 of 22 | 7.0 ppt | 1.8 ppt | none |
Not detected: PFEESA, 8:2 FTS, PFMPA, PFPeA, 6:2 FTS, PFMBA, PFTrDA, NEtFOSAA, NFDHA, PFPeS, PFHpS, NMeFOSAA, PFOA, PFHxS, PFHpA, PFBS, ADONA, PFTA, 4:2 FTS, PFOS, PFDA, PFDoA, PFHxA, PFUnA, 11Cl-PF3OUdS, 9Cl-PF3ONS, HFPO-DA, PFNA.
Lithium, tested in the same program: highest 39 ppb, detected in 12 of 22 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 707 tested systems in California
91719 92260 92395 92503 92504 92530 92531 92532 92555 92562 92563 92570 92571 92584 92585 92586 92587 92592 92595 92596 92879 92880 92881 92883
As reported by the utility to EPA. Neighbouring ZIPs are often split between systems; your water bill names yours.
Well & Tap. "PFAS in Elsinore Valley Mwd water: EPA UCMR 5 results." Data: U.S. EPA Fifth Unregulated Contaminant Monitoring Rule, final release August 2026, PWSID CA3310012. https://wellandtap.com/pfas/california/elsinore-valley-mwd/
Source: U.S. EPA, UCMR 5 occurrence data, final release August 2026 (PWSID CA3310012). Population: EPA SDWIS. Averages count results below the reporting level as zero, the same convention EPA uses for running annual averages. Full method.
