No PFAS were detected in any of the 16 samples EPA's program collected.
City of Detroit is a public water system drawing on surface water, based in Detroit, Michigan, serving about 633,218 people, including Detroit, Highland Park, Hamtramck, Grosse Pointe, Redford. Under EPA's Fifth Unregulated Contaminant Monitoring Rule it was tested for 29 PFAS and lithium 16 times across 4 sampling points between Feb 2023 and Nov 2023.
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: PFPeS, 6:2 FTS, 4:2 FTS, 8:2 FTS, NMeFOSAA, PFMPA, NEtFOSAA, PFPeA, PFMBA, PFEESA, PFTrDA, PFTA, PFDoA, PFBA, NFDHA, PFHxS, ADONA, 9Cl-PF3ONS, 11Cl-PF3OUdS, PFHxA, PFDA, PFOA, PFOS, PFNA, PFHpA, PFHpS, PFBS, HFPO-DA, PFUnA.
Lithium, tested in the same program: not detected.
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.
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.
All 319 tested systems in Michigan
48201 48202 48203 48204 48205 48206 48207 48209 48210 48211 48212 48213 48214 48215 48216 48217 48219 48221 48223 48224 48226 48227 48228 48234 48235 48236 48238 48239 48243
As reported by the utility to EPA. Neighbouring ZIPs are often split between systems; your water bill names yours.
Well & Tap. "PFAS in City of Detroit water: EPA UCMR 5 results." Data: U.S. EPA Fifth Unregulated Contaminant Monitoring Rule, final release August 2026, PWSID MI0001800. https://wellandtap.com/pfas/michigan/city-of-detroit/
Source: U.S. EPA, UCMR 5 occurrence data, final release August 2026 (PWSID MI0001800). Population: EPA SDWIS. Averages count results below the reporting level as zero, the same convention EPA uses for running annual averages. Full method.
