Is tap water safe in Dallas?

EPA SDWIS shows no active health-based violation in this profile's reporting window. That is not the same as proving every contaminant is absent, and federal data can lag state and utility records.

How hard is the water in Dallas, TX?

Nearby USGS observations produce an estimate of 111 ppm (6.5 grains per gallon), classified as moderately hard. This is not a tap measurement.

Do I need a water softener in ZIP code 75209?

There is no high-hardness trigger in this profile. Confirm conditions with an at-home hardness test before purchasing equipment.

City water profile

Dallas water quality

Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Dallas, Texas.

Median indexed hardness

110PPM

45 indexed ZIPs

Range 109.5–111 PPM

State comparison: 1 PPM below
State hardness rank: #352 of 523
Matched utilities: 1
Active health records: 0

City summary

What the indexed records say

Dallas has 45 published ZIP profiles across Dallas County. The indexed median is 110 PPM, compared with 111 PPM across Texas.

Among the 523 Texascities with an indexed median, Dallas ranks #352from highest to lowest. Across all 1,026 state ZIP profiles, available estimates run from 5.4to 500.5 PPM.

The 109.5–111 PPM range shows how much the available ZIP estimates vary within the city label.

Hardness distribution

How local ZIP estimates compare

Soft0 ZIPs

Moderately hard45 ZIPs

Hard0 ZIPs

Very hard0 ZIPs

45 of 45 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance: 4.3 miles
Profiles with evidence: 45/45

Confidence labels

High: 0Moderate: 45Low: 0

Observation window: Jan 5, 2016 to Jun 4, 2026.

ZIP directory

Water reports in Dallas

Open a ZIP for site-level provenance and measurements.

ZIP code

75201

Moderately Hard

110 PPM

Nearest site: 4.4 mi
Confidence: Moderate

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ZIP code

75202

Moderately Hard

110 PPM

Nearest site: 4.3 mi
Confidence: Moderate

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ZIP code

75203

Moderately Hard

110 PPM

Nearest site: 4.6 mi
Confidence: Moderate

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ZIP code

75204

Moderately Hard

110 PPM

Nearest site: 4.9 mi
Confidence: Moderate

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ZIP code

75206

Moderately Hard

110 PPM

Nearest site: 4.1 mi
Confidence: Moderate

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ZIP code

75207

Moderately Hard

110 PPM

Nearest site: 3.2 mi
Confidence: Moderate

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ZIP code

75208

Moderately Hard

110 PPM

Nearest site: 3.6 mi
Confidence: Moderate

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ZIP code

75209

Moderately Hard

111 PPM

Nearest site: 4.5 mi
Confidence: Moderate

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ZIP code

75210

Moderately Hard

110 PPM

Nearest site: 4.4 mi
Confidence: Moderate

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ZIP code

75211

Moderately Hard

110 PPM

Nearest site: 1.4 mi
Confidence: Moderate

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ZIP code

75212

Moderately Hard

110 PPM

Nearest site: 1.1 mi
Confidence: Moderate

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ZIP code

75214

Moderately Hard

110 PPM

Nearest site: 4.2 mi
Confidence: Moderate

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ZIP code

75215

Moderately Hard

110 PPM

Nearest site: 3.5 mi
Confidence: Moderate

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ZIP code

75216

Moderately Hard

110 PPM

Nearest site: 2.7 mi
Confidence: Moderate

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ZIP code

75217

Moderately Hard

110 PPM

Nearest site: 3.1 mi
Confidence: Moderate

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ZIP code

75218

Moderately Hard

110 PPM

Nearest site: 4.6 mi
Confidence: Moderate

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ZIP code

75219

Moderately Hard

110 PPM

Nearest site: 3.6 mi
Confidence: Moderate

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ZIP code

75220

Moderately Hard

110 PPM

Nearest site: 4.9 mi
Confidence: Moderate

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ZIP code

75223

Moderately Hard

110 PPM

Nearest site: 5.9 mi
Confidence: Moderate

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ZIP code

75224

Moderately Hard

110 PPM

Nearest site: 5.7 mi
Confidence: Moderate

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ZIP code

75225

Moderately Hard

110 PPM

Nearest site: 2.6 mi
Confidence: Moderate

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ZIP code

75226

Moderately Hard

110 PPM

Nearest site: 5.7 mi
Confidence: Moderate

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ZIP code

75227

Moderately Hard

110 PPM

Nearest site: 5 mi
Confidence: Moderate

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ZIP code

75228

Moderately Hard

110 PPM

Nearest site: 6.3 mi
Confidence: Moderate

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ZIP code

75229

Moderately Hard

110 PPM

Nearest site: 6.4 mi
Confidence: Moderate

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ZIP code

75230

Moderately Hard

110 PPM

Nearest site: 2.3 mi
Confidence: Moderate

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ZIP code

75231

Moderately Hard

110 PPM

Nearest site: 1.2 mi
Confidence: Moderate

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ZIP code

75232

Moderately Hard

110 PPM

Nearest site: 6.9 mi
Confidence: Moderate

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ZIP code

75233

Moderately Hard

110 PPM

Nearest site: 4.4 mi
Confidence: Moderate

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ZIP code

75235

Moderately Hard

110 PPM

Nearest site: 2.8 mi
Confidence: Moderate

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ZIP code

75236

Moderately Hard

110 PPM

Nearest site: 2.3 mi
Confidence: Moderate

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ZIP code

75237

Moderately Hard

110 PPM

Nearest site: 5.8 mi
Confidence: Moderate

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ZIP code

75238

Moderately Hard

110 PPM

Nearest site: 2.9 mi
Confidence: Moderate

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ZIP code

75240

Moderately Hard

110 PPM

Nearest site: 3.5 mi
Confidence: Moderate

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ZIP code

75241

Moderately Hard

110 PPM

Nearest site: 3.1 mi
Confidence: Moderate

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ZIP code

75243

Moderately Hard

110 PPM

Nearest site: 2 mi
Confidence: Moderate

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ZIP code

75246

Moderately Hard

110 PPM

Nearest site: 5.9 mi
Confidence: Moderate

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ZIP code

75247

Moderately Hard

110 PPM

Nearest site: 1.2 mi
Confidence: Moderate

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ZIP code

75248

Moderately Hard

110 PPM

Nearest site: 6 mi
Confidence: Moderate

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ZIP code

75249

Moderately Hard

110 PPM

Nearest site: 4.6 mi
Confidence: Moderate

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ZIP code

75251

Moderately Hard

110 PPM

Nearest site: 2.3 mi
Confidence: Moderate

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ZIP code

75253

Moderately Hard

109.5 PPM

Nearest site: 7.7 mi
Confidence: Moderate

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ZIP code

75254

Moderately Hard

110 PPM

Nearest site: 4.5 mi
Confidence: Moderate

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ZIP code

75270

Moderately Hard

110 PPM

Nearest site: 4.3 mi
Confidence: Moderate

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ZIP code

75390

Moderately Hard

110 PPM

Nearest site: 2.1 mi
Confidence: Moderate

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Public water systems

Utilities associated with this city

Dallas Water Utility

PWSID TX0570004

Surface water

System population served: 1,356,479
Last reported: Jun 26, 2026

A municipal system, in-state city, and served county all agree with this Census ZCTA.

Compliance history

What EPA records show

No active health-based violation appears among the associated systems in the represented EPA reporting quarter. This does not mean every contaminant was tested at every tap.

No violation records are included in the current lookback window.

Practical next steps

Move from index to evidence

1. Open your ZIP. Check distance, dates, confidence, and the associated utility.
2. Read the current CCR. Confirm source water, detections, limits, ranges, and notices.
3. Test the tap when needed. Confirm health concerns or treatment sizing with the right method.

Continue comparing

Other Texas communities

Balch Springs

Dallas County

110 PPM median

Carrollton

Dallas County

111 PPM median

Cedar Hill

Dallas County

110 PPM median

Coppell

Dallas County

111 PPM median

Desoto

Dallas County

110 PPM median

Duncanville

Dallas County

110 PPM median

Search all 529 Texas cities →

Questions people ask

About water in Dallas

Is the water hard?

The indexed city median is 110 PPM. Open the ZIP report to verify the distance and confidence behind that estimate.

Is the tap water safe?

Compliance history is utility-wide and cannot guarantee conditions at every tap. Check current notices and test when address-specific evidence is needed.

Do I need treatment?

Choose treatment only after confirming the problem at the property. A softener targets hardness; contaminant treatment requires a matching, verified performance claim.