County Water Quality Report

Jefferson Parish County, Louisiana

2 public water systems serving 415,427 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 415,427
🇪🇺 Would fail EU standards 2 of 2

Top water quality concerns in Jefferson Parish 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
  • Arsenic detectedin 1 of 2 utilities

All utilities in Jefferson Parish County

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

C
65/100

W JEFFERSON WW DISTRICT 2

JEFFERSON · 140,264 residents

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

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D
63/100

E JEFFERSON WW DISTRICT 1

JEFFERSON · 275,163 residents

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

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