County Water Quality Report

Franklin County, Ohio

2 public water systems serving 2,203,946 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 2,203,946
Most recent test 2024
🇪🇺 Would fail EU standards 1 of 2

Top water quality concerns in Franklin County

  • Haloacetic acids (HAA9) significantly above health guidelinein 1 of 2 utilities
  • Total trihalomethanes (TTHMs) significantly above health guidelinein 1 of 2 utilities
  • Haloacetic acids (HAA5) significantly above health guidelinein 1 of 2 utilities
  • Lead detected in source waterin 1 of 2 utilities
  • Haloacetic Acids (HAA5) significantly above health guidelinein 1 of 2 utilities

All utilities in Franklin County

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

C
65/100

COLUMBUS PUBLIC WATER SYSTEM

COLUMBUS · 1,305,946 residents

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

View report →
D
64/100

Columbus Department of Public Works

Columbus · 898,000 residents

Top concern: Lead detected in source water

View report →