Dallas
TX

Is Dallas, TX Tap Water Safe to Drink?

Dallas, TX tap water has a qualified concern. Recent EPA testing detected certain PFAS chemicals, including PFPeA, at levels above EPA drinking water standards in the majority of ZIP codes served. For most healthy adults the risk is low, but households with infants, pregnant individuals, or immunocompromised members may want to use a certified filter as a precaution.

9Water systems
52ZIP codes
98.1%ZIPs above EPA guideline
Metro areaDallas-Fort Worth-Arlington, TX
Latest data2025-11-05

Where Does Dallas Get Its Water?

Dallas, TX draws its drinking water from surface water sources managed primarily by Dallas Water Utility, the city's main water provider. Several neighboring utilities also serve portions of the broader Dallas area, including the cities of Plano, Farmers Branch, Cockrell Hill, and University Park, as well as the towns of Addison and Highland Park.

Two major treatment plants handle most of the water for this region: the Bachman Water Treatment Plant and the East Side Water Treatment Plant. The Elm Fork Water Treatment Plant also serves as a significant facility for the area. Each plant takes raw surface water through a multi-step process before it reaches your tap.

Smaller systems, including Flo Community Water Supply Corporation and the town of Highland Park, receive water that moves through interconnected distribution infrastructure, meaning the treatment profile described here broadly applies across most of the city's ZIP codes.

How Is Dallas Tap Water Treated?

Dallas-area water goes through conventional treatment steps including coagulation, which clumps particles together, followed by filtration to remove those particles. The aggregate also indicates the use of membrane filtration, which provides an additional barrier against fine particles and some contaminants, along with biological treatment and other advanced processes.

For disinfection, the water system uses a combination of approaches including ozone, free chlorine, and chloramine-based methods. Ozone is applied early in the process to break down organic material and reduce disinfection byproducts, while chlorine or chloramines are added later to keep the water free of bacteria and viruses as it travels through the distribution pipes to your home.

The presence of granular activated carbon in the treatment process is notable, as this material can adsorb some organic compounds and certain PFAS chemicals. However, as the detected PFAS levels indicate, treatment alone does not fully eliminate all PFAS compounds before the water reaches consumers.

What's in Dallas Tap Water?

The most significant finding in recent EPA testing is PFPeA, a type of PFAS chemical. The highest recorded level was 0.0125 micrograms per liter, which is more than four times the EPA drinking water standard of 0.003 micrograms per liter. Detections of PFPeA above that standard were recorded across 50 of the ZIP codes tracked in this dataset.

PFTrDA, another PFAS compound, was detected at up to 0.007 micrograms per liter, exactly at the EPA standard for that chemical, with one ZIP code showing a value at or above the guideline. Several other PFAS chemicals, including PFBA and PFHxA, were detected across all 52 ZIP codes tracked but at levels that did not exceed their respective reporting thresholds. Lithium was also detected, up to 9 micrograms per liter, but with no EPA guideline exceeded.

PFAS chemicals are a broad family of synthetic compounds that have been widely used in industrial processes, firefighting foam, and consumer products. They can enter source water through industrial discharges, stormwater runoff, and legacy contamination in watersheds. Because surface water systems draw from rivers and reservoirs that can collect runoff from a wide area, PFAS are a common concern for large urban water systems.

ContaminantPeak detectedEPA guidelineZIPs detectedStatus
PFPeA 0.0125 µg/L 0.003 µg/L 50 ZIPs Above guideline
PFTrDA 0.007 µg/L 0.007 µg/L 1 ZIP Above guideline
lithium 9 µg/L — 0 ZIPs Within guideline
PFBA 0.0103 µg/L — 42 ZIPs Within guideline
PFHxA 0.0053 µg/L — 42 ZIPs Within guideline

Health Risk Profile for Dallas

The EPA has set individual drinking water standards for several PFAS compounds, including the 0.003 micrograms per liter limit for PFPeA. Dallas tap water tested as high as 0.0125 micrograms per liter for that compound. Long-term exposure to PFAS above these limits has been associated with effects on the immune system, thyroid function, and increased risk of certain cancers, based on the EPA's review of available science.

Infants fed formula mixed with tap water, pregnant individuals, and people with weakened immune systems face the greatest concern from elevated PFAS levels because these groups are more vulnerable to the effects of chemical exposure over time. The EPA standards are specifically set with sensitive populations in mind.

If you want to reduce PFAS exposure at home, look for a point-of-use filter certified to NSF/ANSI 58 (reverse osmosis) or NSF/ANSI P473 (pitcher and faucet filters tested specifically for PFAS removal). NSF/ANSI is an independent third-party certification, so the label on the box tells you the filter has actually been tested to that standard, not just marketed as effective. For chlorine taste and odor, NSF/ANSI 42 covers that separately.

The EPA finalized these PFAS standards in 2024, and public water systems have until 2029 to fully comply. The science on lower-level PFAS exposure is still developing, and the levels detected in Dallas water, while above EPA limits for PFPeA, are not at levels associated with acute or immediate health effects for most adults.

Best Broad-Spectrum Filters for This Water Profile

This city profile includes PFAS detections, chlorine disinfection, and other dissolved contaminants. Reverse osmosis (RO) systems certified under NSF/ANSI 58 provide broad reduction coverage; for PFAS specifically, confirm NSF/ANSI P473 or equivalent PFAS reduction certification.

Waterdrop G3P600 Reverse Osmosis System
Under-sink RO system

8-stage tankless RO system certified to NSF/ANSI 58, reduces 1,000+ contaminants including PFAS, lead, arsenic, fluoride, and nitrates.

See recommendations matched to your exact address: choose your ZIP code below.

Frequently Asked Questions about Dallas Tap Water

Is Dallas tap water safe to drink?

Dallas tap water meets many federal standards but recent EPA testing found PFPeA, a PFAS chemical, above the EPA drinking water limit in most ZIP codes served. For healthy adults, the short-term risk is low. Households with infants, pregnant individuals, or immunocompromised members are advised to consider a certified PFAS-reducing filter as a precaution.

What contaminants are in Dallas tap water?

EPA testing detected PFPeA at up to 0.0125 micrograms per liter, above the EPA standard of 0.003. PFTrDA was detected at up to 0.007 micrograms per liter, at the EPA standard. PFBA and PFHxA were detected across all tested ZIP codes but below their guideline thresholds. Lithium was also detected, up to 9 micrograms per liter, with no guideline exceeded.

Where does Dallas get its drinking water?

Dallas draws from surface water sources managed primarily by Dallas Water Utility, with treatment at the Bachman, East Side, and Elm Fork water treatment plants. Surrounding communities including Plano, Farmers Branch, University Park, and Highland Park are served by their own utilities, which draw from the same regional water supply network.

Do I need a water filter in Dallas?

Given the detected PFAS levels above EPA limits, a certified filter is worth considering, especially for households with infants, pregnant individuals, or immunocompromised members. Look for filters certified to NSF/ANSI 58 (reverse osmosis systems) or NSF/ANSI P473, which are independently tested for PFAS removal. NSF/ANSI 42 addresses chlorine taste and odor if that is also a concern.

How often is Dallas tap water tested?

Public water systems in Dallas are monitored on a schedule set by the EPA and the state of Texas. The most recent EPA samples in this dataset were collected as recently as November 2025, with testing for PFAS chemicals conducted under a national EPA monitoring program. Utilities are also required to publish annual Consumer Confidence Reports with testing results.

What is the best water filter for Dallas?

For Dallas tap water, the top priority is PFAS removal. A reverse osmosis system certified to NSF/ANSI 58 is the most thorough option for under-sink use. Pitcher or faucet filters certified to NSF/ANSI P473 are a lower-cost alternative specifically tested for PFAS. If you also want to reduce chlorine taste or odor, choose a filter that additionally carries NSF/ANSI 42 certification.

Tap water reports by ZIP in Dallas

Water utilities serving Dallas, TX

Service area boundaries are approximate and based on state filings or modeled estimates. Contact your utility to confirm exact service at a specific address.

Modeled boundaries are shown with a dashed outline.

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