Water Quality in Dallas-Fort Worth: What You Need to Know in 2026

Dallas-Fort Worth tap water contains 38 detected contaminants, with 17 exceeding health guidelines set by the Environmental Working Group (EWG). The most concerning include disinfection byproducts linked to bladder cancer, PFAS "forever chemicals," and heavy metals. DFW water also has a hardness level of 150 PPM (8.8 GPG), which damages appliances and dries out skin. A whole-house filtration system is the most effective way to protect your family from these contaminants.

Dallas-Fort Worth water has 38 detected contaminants, of which 17 exceed health guidelines set by the Environmental Working Group (EWG). That includes disinfection byproducts, PFAS (the so-called "forever chemicals"), and heavy metals. If you live in DFW, here's what you need to know about the water coming out of your tap.

Where Dallas Water Comes From

• Trinity River, Lake Lewisville, and Lake Texoma supply the entire DFW metroplex
• Surface water sources are more susceptible to agricultural, industrial, and urban contamination
• Legal standards differ from health standards -- many EPA limits have not been updated in decades

The water that reaches Dallas-Fort Worth homes comes from three main sources: the Trinity River, Lake Lewisville, and Lake Texoma. These sources supply millions of people across the entire metroplex, from Irving and Arlington to Plano, Garland, Frisco, and McKinney.

Surface water from rivers and reservoirs is more susceptible to agricultural, industrial, and urban contamination than groundwater. The Trinity River collects runoff from one of the largest urban areas in Texas, meaning it carries pesticides, fertilizers, industrial waste, and pharmaceuticals before it ever reaches the treatment plants.

Dallas Water Utilities treatment plants do their job to meet the EPA's legal standards. But there's an important difference between what's legal and what's safe for your health. The legal limits for many contaminants haven't been updated in decades, while the science has advanced significantly.

Contaminants Detected in DFW

According to the most recent data, 38 contaminants have been identified in the Dallas water system. Of those 38, 17 exceed EWG health guidelines, which are stricter than the EPA's legal limits.

The three main groups of contaminants are:

• Disinfection byproducts (TTHMs and HAA5s): These form when the chlorine used to disinfect water reacts with organic matter. Trihalomethanes (TTHMs) and haloacetic acids (HAA5s) are linked to increased risk of bladder cancer and reproductive problems. These are particularly high in systems that rely on surface water like Dallas.

• PFAS ("forever chemicals"): Synthetic substances that don't break down in the environment or in the human body. They've been detected in the Dallas water system and pose a cumulative long-term risk.

• Heavy metals: These include traces of arsenic, chromium, and other metals that can be present in both the water source and the distribution pipes, especially in older homes and buildings.

If you live in Fort Worth, Arlington, Irving, or any city connected to the metroplex's distribution system, these contaminants are in your water too.

PFAS in Dallas Water

• PFAS have been detected in the Dallas water system
• They never degrade -- a PFAS molecule in water today will persist for hundreds of years
• Linked to multiple cancers, thyroid disruption, fertility problems, and weakened immunity
• Not removed by boiling or basic carbon filters

PFAS deserve their own section because they're one of the most concerning contaminants of the last decade. They're called "forever chemicals" because they literally don't degrade. A PFAS molecule that enters the water today will still be there hundreds of years from now.

PFAS have been detected in the Dallas water system. Chronic exposure to these chemicals has been linked to:

• Kidney and testicular cancer
• Thyroid disruption
• Fertility problems in both men and women
• Weakened immune system, especially in children
• Elevated cholesterol and increased cardiovascular risk

In 2024, the EPA established legal limits for six types of PFAS in drinking water for the first time. However, many experts believe those limits are still too high. And most importantly: PFAS are not removed by boiling water or by basic carbon filters.

Hard Water: The Invisible Problem

Beyond the health contaminants, Dallas has a hard water problem. With a hardness level of 150 PPM (8.8 GPG), DFW water is classified as moderately hard. It doesn't sound alarming, but the effects are real and costly.

Hard water contains high concentrations of dissolved calcium and magnesium. These minerals aren't dangerous to drink, but they wreak havoc on your home:

• Limescale in pipes and appliances: That white buildup you see on faucets, showerheads, and coffee makers is mineral accumulation. Over time, it reduces water flow and shortens the lifespan of water heaters, washing machines, and dishwashers.

• Dry skin and dull hair: Hard water minerals leave a residue on your skin that clogs pores and prevents proper hydration. Your hair loses its shine and becomes brittle.

• Higher soap and detergent costs: Hard water doesn't lather easily, so you end up using more product to wash clothes, dishes, and your own body.

• Stains on surfaces: Glass, mirrors, faucets, and stainless steel surfaces end up with persistent white spots.

In cities like Plano, Frisco, and McKinney, where many homes are relatively new, limescale may already be building up inside the pipes without you noticing.

How It Affects Your Health and Your Home

• Shower exposure: Disinfection byproducts are absorbed through skin and inhaled as steam
• Children and pregnant women face disproportionate risk from cumulative exposure
• Economic cost: Hard water alone can cost households over $2,000 per year in hidden damage

When you combine 17 contaminants above health guidelines with moderately hard water, the impact multiplies. This isn't just about taste or stains on the faucets. It's a long-term health issue.

Disinfection byproducts like trihalomethanes aren't just ingested when you drink the water. They're also absorbed through the skin and inhaled as steam when you shower. This means that even if you buy bottled water to drink, you're still exposed every time you bathe, wash dishes, or cook.

For families with young children, pregnant women, or people with existing health conditions, the cumulative exposure to these contaminants is a serious concern. Children are especially vulnerable because their bodies absorb proportionally more contaminants than adults.

And the economic cost of hard water is significant. Between appliances that fail prematurely, pipes that clog, and extra spending on cleaning products, the average household can lose more than $2,000 per year without even realizing it.

What You Can Do

The first step is knowing exactly what's in your water. Public water quality reports give you a general overview, but they don't reflect what's happening at your specific faucet. Your pipe conditions, the age of your home, and your location within the distribution system all directly affect what you end up drinking.

A whole-house filtration system can remove disinfection byproducts, PFAS, and heavy metals before they reach any faucet. And a reverse osmosis purification system gives you clean water for drinking and cooking directly from your kitchen sink.

For hard water, a water softener removes the excess calcium and magnesium, protecting your pipes, appliances, and your skin.

If you live in Dallas, Fort Worth, Arlington, Irving, Plano, Garland, Frisco, McKinney, or any city in the DFW metroplex, you can check the specific details for your area on our Dallas-Fort Worth page.

Frequently Asked Questions

Is Dallas tap water safe to drink in 2026?

Dallas tap water meets EPA legal standards, but 17 contaminants exceed the stricter health guidelines set by the Environmental Working Group (EWG). These include disinfection byproducts, PFAS, and heavy metals. Legal compliance does not mean the water is safe by current scientific standards, especially for children and pregnant women.

How hard is the water in Dallas-Fort Worth?

DFW water has a hardness level of approximately 150 PPM (8.8 GPG), which is classified as moderately hard. This level causes visible limescale on faucets and showerheads, dry skin and hair, reduced appliance efficiency, and can cost homeowners over $2,000 per year in hidden damage and extra cleaning expenses.

Are there PFAS in Dallas drinking water?

Yes. PFAS have been detected in the Dallas water system. These "forever chemicals" do not break down in the environment or the human body, and chronic exposure has been linked to kidney cancer, thyroid disruption, fertility problems, and weakened immune systems. Standard boiling and basic carbon filters do not remove PFAS.

What are the most dangerous contaminants in DFW water?

The most concerning contaminants in DFW water are disinfection byproducts (trihalomethanes and haloacetic acids) linked to bladder cancer, PFAS forever chemicals linked to multiple cancers and hormonal disruption, and heavy metals including arsenic and chromium. All of these are present at levels above science-based health guidelines.

What type of water filter do you need in Dallas?

For Dallas-Fort Worth, a whole-house filtration system is recommended because it addresses both the contaminant problem and the hard water problem simultaneously. A system installed at the point of entry removes disinfection byproducts, PFAS, and heavy metals while also softening the water to protect your appliances and plumbing.

You don't have to guess what's in your water. Schedule your free water test and one of our specialists will come to your home to analyze exactly what contaminants and hardness levels are in your water. No obligation, no cost. It's the first step to protecting your family.