Is there PFAS in Dallas Water Utility water?

Some. At least one sample reached an EPA limit, but the average at every sampling point stayed below it.

Dallas Water Utility is a public water system drawing on surface water, based in Dallas, Texas, serving about 1.4 million people. Under EPA's Fifth Unregulated Contaminant Monitoring Rule it was tested for 29 PFAS and lithium 12 times across 3 sampling points between Mar 2023 and Jan 2024.

Every PFAS detected

Not detected: PFDoA, PFPeS, PFUnA, 11Cl-PF3OUdS, 9Cl-PF3ONS, PFTA, PFDA, PFHpS, PFTrDA, NFDHA, PFEESA, PFMBA, PFMPA, 8:2 FTS, 4:2 FTS, 6:2 FTS, HFPO-DA, ADONA, PFNA, NEtFOSAA, NMeFOSAA.

Lithium, tested in the same program: not detected.

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 Texas

• City of Austin Water & Wastewater 6 PFAS detected
• City of Fort Worth above an EPA limit
• El Paso Water Utilities Public Service B above an EPA limit
• City of Arlington 5 PFAS detected
• City of Corpus Christi 3 PFAS detected
• City of Plano 4 PFAS detected

All 1154 tested systems in Texas

ZIP codes served

75201 75202 75203 75204 75205 75206 75207 75208 75209 75210 75211 75212 75214 75215 75216 75217 75218 75219 75220 75223 75224 75225 75226 75227 75228 75229 75230 75231 75232 75233 75234 75235 75236 75237 75238 75240 75241 75242 75243 75244 75246 75247 75248 75249 75251 75252 75253 75254 75258 75270 75287 75390 75398

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 Dallas Water Utility water: EPA UCMR 5 results." Data: U.S. EPA Fifth Unregulated Contaminant Monitoring Rule, final release August 2026, PWSID TX0570004. https://wellandtap.com/pfas/texas/dallas-water-utility/

About this data

Source: U.S. EPA, UCMR 5 occurrence data, final release August 2026 (PWSID TX0570004). Population: EPA SDWIS. Averages count results below the reporting level as zero, the same convention EPA uses for running annual averages. Full method.