County Water Quality Report

Frederick County, Maryland

2 public water systems serving 128,911 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 2
Population served 128,911

Top water quality concerns in Frederick County

  • Haloacetic acids (HAA9) significantly above health guidelinein 2 of 2 utilities
  • Haloacetic acids (HAA5) significantly above health guidelinein 2 of 2 utilities
  • Total trihalomethanes (TTHMs) significantly above health guidelinein 2 of 2 utilities

All utilities in Frederick County

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

C
65/100

NEW DESIGN - FREDERICK COUNTY

FREDERICK · 74,911 residents

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

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D
63/100

CITY OF FREDERICK

FREDERICK · 54,000 residents

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

View report →