County Water Quality Report

Howard County, Maryland

1 public water system serving 286,158 residents

Data sources: EPA SDWIS EPA ECHO EWG Tap Water Database Utility CCRs ⓘ How did we get these ratings?
County average grade
C
78/100
Utilities rated 1
Population served 286,158

Top water quality concerns in Howard County

  • Haloacetic acids (HAA9) significantly above health guidelinein 1 of 1 utilities
  • Total trihalomethanes (TTHMs) significantly above health guidelinein 1 of 1 utilities
  • Haloacetic acids (HAA5) significantly above health guidelinein 1 of 1 utilities

All utilities in Howard County

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

B
78/100

HOWARD COUNTY D.P.W. DISTRIBUTION

COLUMBIA · 286,158 residents

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

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