Dallas Water Utilities supplies water to Dallas and much of the surrounding area, including most of Irving. Here is a plain-English look at where that water comes from and what the city’s latest report says. For every result, see the Dallas 2025 Water Quality Report.
Seven surface water sources
Dallas uses surface water from seven sources: the Elm Fork of the Trinity River and lakes Ray Roberts, Lewisville, Grapevine, Ray Hubbard, Tawakoni and Fork. According to the City of Irving, most of Irving’s water travels from Lake Chapman to Lewisville Lake and is then treated by the City of Dallas.
Disinfectant: 2.97 ppm average
The report lists an average total chlorine residual of 2.97 ppm in 2025, under the 4 ppm limit. Irving reports that it uses chloramine. Some people notice the taste or smell, and filtration designed for chloramine can reduce it.
Lead and copper
In 2024 sampling, the 90th percentile lead result was 1.1 parts per billion against an action level of 15, with no sites over, and copper was 0.39 ppm against an action level of 1.3. These metals usually come from household plumbing, so results can differ from home to home, especially in older homes.
A highly rated system
The report notes that Dallas is a “Superior” rated water system, the highest rating from the Texas Commission on Environmental Quality.
Your tap is what matters
A city report describes the public water system, not the water at your faucet. Hardness, taste and plumbing all vary by neighborhood and by home, and the report does not cover private wells. A home test shows what is actually coming out of your tap. Our local team serves Irving, Dallas and communities across the Dallas–Fort Worth area and can test your water at home for free. Schedule your free water consultation.
