Dallas Fort Worth TX metro: water quality. The DFW metroplex pulls drinking water from a patchwork of reservoirs, lakes, and purchased supply contracts…
The DFW metroplex pulls drinking water from a patchwork of reservoirs, lakes, and purchased supply contracts spread across North Texas. Dallas draws primarily from six reservoirs managed by Dallas Water Utilities, while Fort Worth relies on a separate system anchored by Lake Worth and purchases from the Tarrant Regional Water District. Arlington, Plano, Irving, and Garland each operate under their own supply agreements, sourcing from a mix of the Trinity River Authority, the North Texas Municipal Water District, and regional providers. That means 7.7 million people across the 4th largest metro in the country are drinking water that may have passed through very different treatment processes depending on which city – or even which neighborhood – they live in.
This fragmentation matters. A family in Plano and a family in south Fort Worth could have completely different PFAS exposure profiles, even though they live 40 miles apart in the same metro.
UCMR5 monitoring data has turned up PFAS detections across multiple water systems in the DFW metro. Naval Air Station Joint Reserve Base Fort Worth (NAS JRB) is one of the more documented contamination sources in the area – the Department of Defense confirmed PFAS from AFFF firefighting foam in groundwater surrounding the base. Carswell Air Force Base, which preceded NAS JRB, used AFFF extensively during decades of military operations.
The Texas Commission on Environmental Quality (TCEQ) has not set state-specific MCLs for PFAS compounds, leaving federal EPA limits as the enforcement standard. According to a 2024 report by the Environmental Working Group, 14 water systems in the DFW metro area reported detectable PFAS levels under UCMR5, though concentrations varied widely by system. Our data pulls from TCEQ filings, UCMR5 results, and individual utility consumer confidence reports so you can see what your specific city's water system has reported.
North Texas Municipal Water District, which serves Plano and several other suburbs, has been more transparent than some providers about PFAS monitoring results. Dallas Water Utilities has published data showing detections below federal limits but above the levels some toxicologists consider safe for long-term exposure.
Among Texas metros, DFW sits in the middle of the pack. Houston faces heavier industrial contamination from the petrochemical corridor, while Austin's supply from the Highland Lakes system generally tests cleaner. San Antonio's reliance on the Edwards Aquifer puts it in a different risk category entirely.
Nationally, the DFW metro's surface-water-dominant supply means it avoids some of the worst groundwater contamination scenarios seen near military bases in Michigan and the Carolinas. But the region's rapid growth – DFW added over 1.2 million residents between 2010 and 2020 according to U.S. Census Bureau data – puts increasing strain on treatment infrastructure. More people drawing from the same reservoirs, treated by systems designed for a smaller population, creates pressure points.
For statewide data, visit our Texas state page.
Because DFW's water supply is fragmented across so many providers, your first step is figuring out which system serves your home. Two houses on the same street can sometimes be served by different utilities.
Check your water quality with our free tool – we match your address to the correct water system and show you the latest monitoring data for that provider. If your results show PFAS detections, especially if you're near NAS JRB or in areas served by older groundwater wells, a certified filter makes sense. Our water filter guide covers which technologies actually remove PFAS versus which ones just claim to.
For a full breakdown of your area's contaminant history, pull a detailed water report. In a metro this large and this fragmented, citywide averages are almost meaningless – your specific utility and ZIP code tell the real story.