County Water Quality Report

Nassau County, New York

6 public water systems serving 699,000 residents

Data sources: EPA SDWIS EPA ECHO EWG Tap Water Database Utility CCRs ⓘ How did we get these ratings?

County average grade

68/100

Utilities rated 6

Population served 699,000

🇪🇺 Would fail EU standards 1 of 6

Top water quality concerns in Nassau County

PFAS contaminationin 6 of 6 utilities
Perfluorohexane sulfonate (PFHXS) significantly above health guidelinein 3 of 6 utilities
Nitrate significantly above health guidelinein 2 of 6 utilities
Nitrate and nitrite significantly above health guidelinein 2 of 6 utilities
Chromium (hexavalent) significantly above health guidelinein 2 of 6 utilities