County Water Quality Report

New Castle County, Delaware

3 public water systems serving 439,585 residents

Data sources: EPA SDWIS EPA ECHO EWG Tap Water Database Utility CCRs ⓘ How did we get these ratings?
County average grade
F
55/100
Utilities rated 3
Population served 439,585

Top water quality concerns in New Castle County

  • PFAS contaminationin 3 of 3 utilities
  • Haloacetic acids (HAA9) significantly above health guidelinein 3 of 3 utilities
  • Total trihalomethanes (TTHMs) significantly above health guidelinein 3 of 3 utilities
  • Perfluorohexane sulfonate (PFHXS) significantly above health guidelinein 1 of 3 utilities
  • Haloacetic acids (HAA5) significantly above health guidelinein 1 of 3 utilities

All utilities in New Castle County

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

D
59/100

WILMINGTON WATER DEPARTMENT

WILMINGTON · 107,976 residents

Top concern: PFAS contamination

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D
55/100

ARTESIAN WATER COMPANY

BEAR · 231,114 residents

Top concern: PFAS contamination

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F
52/100

VEOLIA WATER DELAWARE, INC

NEW CASTLE · 100,495 residents

Top concern: PFAS contamination

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