County Water Quality Report

Clark County, Nevada

6 public water systems serving 3,474,326 residents

Data sources: EPA SDWIS EPA ECHO EWG Tap Water Database Utility CCRs ⓘ How did we get these ratings?
County average grade
D
65/100
Utilities rated 6
Population served 3,474,326
Most recent test 2024

Top water quality concerns in Clark County

  • Haloacetic acids (HAA9) significantly above health guidelinein 3 of 6 utilities
  • Arsenic significantly above health guidelinein 3 of 6 utilities
  • Total trihalomethanes (TTHMs) significantly above health guidelinein 3 of 6 utilities
  • Haloacetic Acids (HAA5) significantly above health guidelinein 3 of 6 utilities
  • Chromium-6 detectedin 3 of 6 utilities

All utilities in Clark County

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

B
78/100

City of Henderson Water Department

Henderson · 320,000 residents

Top concern: Haloacetic Acids (HAA5) significantly above health guideline

View report →
B
75/100

Las Vegas Municipal Water System

Las Vegas · 651,000 residents

Top concern: Haloacetic Acids (HAA5) significantly above health guideline

View report →
C
67/100

City of North Las Vegas Water Department

North Las Vegas · 251,000 residents

Top concern: Lead detected in source water

View report →
D
57/100

HENDERSON CITY OF

HENDERSON · 336,534 residents

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

View report →
D
57/100

NORTH LAS VEGAS UTILITIES

NORTH LAS VEGAS · 376,515 residents

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

View report →
D
55/100

LAS VEGAS VALLEY WATER DISTRICT

LAS VEGAS · 1,539,277 residents

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

View report →