Dallas, Texas
| Contaminant | Detected | EPA limit | EWG guideline | Status |
|---|---|---|---|---|
| Total Trihalomethanes (TTHMs) | 46.3 ppb | 80 ppb | 0.8 ppb | 58× EWG |
| Haloacetic Acids (HAA5) | 31.4 ppb | 60 ppb | 0.1 ppb | 314× EWG |
| Atrazine | 0.78 ppb | 3 ppb | 0.1 ppb | 8× EWG |
| Chloramine | 3 mg/L | 4 mg/L | — | — |
| Lead | 2.3 ppb | 15 ppb | 0.5 ppb | 5× EWG |
Context
Dallas draws from multiple surface water reservoirs in agricultural areas, leading to elevated atrazine (herbicide) detection at 7.8x the EWG guideline.
Disinfection byproducts are elevated due to the warm climate and organic matter in reservoir sources.
The Dallas-Fort Worth region has experienced rapid population growth, putting increasing strain on water infrastructure and treatment capacity.
Common questions
Is Dallas tap water safe to drink?
Dallas water meets EPA standards but has elevated disinfection byproducts and atrazine from agricultural runoff. THMs exceed EWG guidelines by 58x. An activated carbon filter is the best value improvement for Dallas drinking water, removing chloramine taste and the key contaminants of concern.
Does Dallas water have pesticides?
Atrazine, a widely used herbicide, is detected in Dallas water at 0.78 ppb — below the EPA MCL of 3 ppb but 7.8x above the EWG health guideline. It enters the water supply through agricultural runoff into the reservoirs. Activated carbon filters effectively remove atrazine.
Dallas water quality is similar to Houston's profile — warm climate driving high disinfection byproducts, and agricultural watersheds contributing atrazine. Activated carbon is the most cost-effective filtration choice for Dallas, handling chloramine, THMs, HAAs, and atrazine in one system.
six surface water reservoirs including Lake Lewisville, Ray Hubbard, Grapevine, Ray Roberts, Fork, and Tawakoni
This data reflects system-wide testing. Your home's plumbing may add or reduce contaminants.
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