County Water Quality Report

Dallas County, Texas

12 public water systems serving 4,429,706 residents

Data sources: EPA SDWIS EPA ECHO EWG Tap Water Database Utility CCRs ⓘ How did we get these ratings?
County average grade
D
64/100
Utilities rated 12
Population served 4,429,706
Most recent test 2024
🇪🇺 Would fail EU standards 8 of 12

Top water quality concerns in Dallas County

  • Haloacetic acids (HAA9) significantly above health guidelinein 9 of 12 utilities
  • Bromochloroacetic acid significantly above health guidelinein 9 of 12 utilities
  • PFAS contaminationin 5 of 12 utilities
  • Total trihalomethanes (TTHMs) significantly above health guidelinein 5 of 12 utilities
  • Haloacetic Acids (HAA5) significantly above health guidelinein 3 of 12 utilities

All utilities in Dallas County

Click any utility for full grade card, contaminant data, and treatment plant contact info.

B
76/100

Irving Water Authority

Irving · 240,000 residents

Top concern: Haloacetic Acids (HAA5) significantly above health guideline

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C
74/100

Garland Municipal Water System

Garland · 240,000 residents

Top concern: Lead detected in source water

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C
71/100

Dallas Water Utilities

Dallas · 1,343,000 residents

Top concern: Haloacetic Acids (HAA5) significantly above health guideline

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C
67/100

CITY OF GARLAND

GARLAND · 248,822 residents

Top concern: Haloacetic acids (HAA9) significantly above health guideline

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C
67/100

CITY OF MESQUITE

MESQUITE · 152,020 residents

Top concern: Haloacetic acids (HAA9) significantly above health guideline

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C
67/100

CITY OF RICHARDSON

RICHARDSON · 122,615 residents

Top concern: Haloacetic acids (HAA9) significantly above health guideline

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C
65/100

CITY OF ROWLETT

ROWLETT · 66,212 residents

Top concern: Haloacetic acids (HAA9) significantly above health guideline

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D
61/100

CITY OF GRAND PRAIRIE

GRAND PRAIRIE · 201,843 residents

Top concern: PFAS contamination

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D
55/100

DALLAS WATER UTILITY

DALLAS · 1,356,479 residents

Top concern: PFAS contamination

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D
55/100

CITY OF DESOTO

DESOTO · 57,999 residents

Top concern: PFAS contamination

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D
55/100

CITY OF CARROLLTON

CARROLLTON · 136,170 residents

Top concern: PFAS contamination

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D
55/100

CITY OF IRVING

IRVING · 264,546 residents

Top concern: PFAS contamination

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