| Public water system | Population served |
|---|---|
| LAS VEGAS VALLEY WATER DISTRICT | 1,539,277 |
| TRUCKEE MEADOWS WATER AUTHORITY | 442,000 |
| NORTH LAS VEGAS UTILITIES | 376,515 |
| HENDERSON CITY OF | 336,534 |
| CARSON CITY PUBLIC WORKS | 59,000 |
| VIRGIN VALLEY WATER DISTRICT | 26,000 |
| FERNLEY PUBLIC WORKS | 23,064 |
| ELKO CITY OF | 23,000 |
| NELLIS AIR FORCE BASE | 19,081 |
| SUN VALLEY GID | 17,000 |
| DAYTON VALLEY WATER SYSTEM | 16,000 |
| BOULDER CITY | 15,000 |
| GARDNERVILLE RANCHOS GID | 11,300 |
| INCLINE VILLAGE GID | 9,313 |
| FALLON CITY OF | 9,184 |
| BIG BEND WATER DISTRICT | 9,000 |
| WINNEMUCCA CITY OF | 8,518 |
| MOAPA VALLEY WATER DISTRICT | 8,500 |
| DOUGLAS COUNTY CARSON VALLEY SYSTEM | 6,488 |
| SOUTHERN DESERT CORRECTIONAL CTR NDOC | 6,200 |
| INDIAN HILLS GID | 5,962 |
| YERINGTON CITY OF | 5,050 |
| ELY MUNICIPAL WATER DEPARTMENT | 5,000 |
| WEST WENDOVER WATER SYSTEM | 4,535 |
| KINGSBURY GID | 3,839 |
| LANDER CO SEWER AND WATER DIST 1 BM | 3,635 |
| LOVELOCK MEADOWS WATER DISTRICT | 3,562 |
| TOWN OF MINDEN | 3,500 |
Largest first by population served, as each employer reports it to its federal registry.
Source: U.S. Environmental Protection Agency, Safe Drinking Water Information System (SDWIS/Fed), community water systems. Data captured October 2, 2026.
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