Nevada drinking water quality
Nevada has 610 active public water systems serving 3.5 million people. 313 of them, 51%, had at least one EPA violation in the past three years, 63 have an unresolved violation today, and 32 are designated serious violators by the EPA.
Active systems
610
in 16 counties
People served
3.5M
211 community systems serve 3.1M
Violations, past 3 years
313
51% of active systems
Serious violators
32
48 systems carry a health flag
Largest counties
All 16 countiesLargest community water systems
All 610 systems| System | Serves | Status |
|---|---|---|
| Las Vegas Valley Water District Clark County |
1,539,277 | |
| Truckee Meadows Water Authority Washoe County |
442,000 | |
| North las Vegas Utilities Clark County |
376,515 | |
| Henderson City of Clark County |
336,534 | |
| Carson City Public Works |
59,000 | |
| Virgin Valley Water District Clark County |
26,000 | |
| Fernley Public Works Lyon County |
23,064 | |
| Elko City of Elko County |
23,000 | |
| Nellis Air Force Base Clark County |
19,081 | |
| Sun Valley Gid Washoe County |
17,000 |
About the Nevada data
Retrieved from EPA ECHO on Oct 11, 2026. EPA records for Nevada systems do not include town names, so searches here match on ZIP code, street address, or county.