County Water Quality Report

Bexar County, Texas

2 public water systems serving 3,660,151 residents

Data sources: EPA SDWIS EPA ECHO EWG Tap Water Database Utility CCRs ⓘ How did we get these ratings?
County average grade
C
72/100
Utilities rated 2
Population served 3,660,151
Most recent test 2024

Top water quality concerns in Bexar County

  • Haloacetic acids (HAA9) significantly above health guidelinein 1 of 2 utilities
  • Total trihalomethanes (TTHMs) significantly above health guidelinein 1 of 2 utilities
  • Bromochloroacetic acid significantly above health guidelinein 1 of 2 utilities
  • Arsenic significantly above health guidelinein 1 of 2 utilities

All utilities in Bexar County

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

B
76/100

San Antonio Department of Public Works

San Antonio · 1,547,000 residents

Top concern: Arsenic significantly above health guideline

View report →
C
67/100

SAN ANTONIO WATER SYSTEM

SAN ANTONIO · 2,113,151 residents

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

View report →