Nevada Water Quality Ratings
TapWaterSafety has rated 9 public water systems in Nevada, serving a combined 4,239,326 residents. The statewide average grade is D.
State average grade
D
Total utilities rated
9
Population served
4,239,326
Most recent test
2024
Top water quality concerns in Nevada
- Arsenic significantly above health guideline
- Haloacetic acids (HAA9) significantly above health guideline
- Chromium-6 detected
- Total trihalomethanes (TTHMs) significantly above health guideline
- Haloacetic Acids (HAA5) significantly above health guideline
Cities in Nevada
Browse tap water quality reports by city. Click any city to see its grade, what's in the water, and recommended filters.
Grade distribution
All rated utilities in Nevada
Sorted by score, highest first. Click any utility to see the full grade card.
| Rank | Utility | City | Population | Score | Grade |
|---|---|---|---|---|---|
| #1 | City of Henderson Water Department | Henderson | 320,000 | 86 | A |
| #2 | Las Vegas Municipal Water System | Las Vegas | 651,000 | 82 | B |
| #3 | City of North Las Vegas Water Department | North Las Vegas | 251,000 | 76 | B |
| #4 | Reno Water Authority | Reno | 264,000 | 74 | C |
| #5 | HENDERSON CITY OF | HENDERSON | 336,534 | 59 | D |
| #6 | NORTH LAS VEGAS UTILITIES | NORTH LAS VEGAS | 376,515 | 57 | D |
| #7 | LAS VEGAS VALLEY WATER DISTRICT | LAS VEGAS | 1,539,277 | 55 | D |
| #8 | CARSON CITY PUBLIC WORKS | CARSON CITY | 59,000 | 54 | F |
| #9 | TRUCKEE MEADOWS WATER AUTHORITY | RENO | 442,000 | 48 | F |