Yes, at low levels. 1 PFAS was detected, all below EPA's 2024 limits.
Also detected, no federal limit: PFBA.
Water District 1 of Johnson CO is a public water system drawing on surface water, based in Kansas City, Kansas, serving about 490,000 people, including Bucyrus, De Soto, Gardner, New Century, Olathe, Spring Hill. Under EPA's Fifth Unregulated Contaminant Monitoring Rule it was tested for 29 PFAS and lithium 12 times across 3 sampling points between Apr 2024 and Feb 2026.
| PFAS | Detected | Highest | Worst point avg | EPA limit |
|---|---|---|---|---|
| PFBA Perfluorobutanoic acid |
2 of 12 | 5.3 ppt | 2.6 ppt | none |
Not detected: NFDHA, PFBS, PFPeS, PFHpS, PFTA, PFTrDA, NEtFOSAA, PFNA, PFHxS, PFEESA, PFOS, PFHpA, ADONA, PFOA, PFDA, PFDoA, PFHxA, PFUnA, 4:2 FTS, 9Cl-PF3ONS, PFMBA, HFPO-DA, 6:2 FTS, NMeFOSAA, 8:2 FTS, PFMPA, PFPeA, 11Cl-PF3OUdS.
Lithium, tested in the same program: highest 50.9 ppb, detected in 11 of 12 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 103 tested systems in Kansas
66013 66018 66030 66031 66061 66062 66083 66085 66202 66203 66204 66205 66206 66207 66208 66209 66210 66211 66212 66213 66214 66215 66216 66217 66218 66219 66220 66221 66223 66224 66226 66227
As reported by the utility to EPA. Neighbouring ZIPs are often split between systems; your water bill names yours.
Well & Tap. "PFAS in Water District 1 of Johnson CO water: EPA UCMR 5 results." Data: U.S. EPA Fifth Unregulated Contaminant Monitoring Rule, final release August 2026, PWSID KS2009110. https://wellandtap.com/pfas/kansas/water-district-1-of-johnson-co/
Source: U.S. EPA, UCMR 5 occurrence data, final release August 2026 (PWSID KS2009110). Population: EPA SDWIS. Averages count results below the reporting level as zero, the same convention EPA uses for running annual averages. Full method.
