State drinking water records
Nevada drinking water systems
219 community water systems serve Nevada and are listed below under 17 counties and on the pages of 105 cities and towns. Their own population figures add up to 3,135,244 people, a sum that counts people twice where one system sells water to another.
90 of them (41%) had at least one health-based violation in the last 10 years. 47 systems still have one unresolved.
195 rely mainly on groundwater and 24 on surface water, counting water bought from other systems.
201 systems filed a lead service line inventory listing 0 lead lines, 1,113 galvanized lines that must be replaced and 130,170 lines of unknown material.
49 systems are placed by the county their records name: EPA has no service area map for 46 of them, and 3 have one that does not line up with their own records.
- Community water systems
- 219
- People served, sum of each system's own figure
- 3,135,244
- Systems with a health-based violation, last 10 years
- 90
- Systems with one unresolved
- 47
- Lead service lines in inventories
- 0
Counties
17 countiesEach county counts the systems whose service area map reaches it. Systems placed only by a mailing address are listed on the county pages but not counted here.
| County | Systems | People served | With a health-based violation, 10 years | With one unresolved |
|---|---|---|---|---|
| Carson City | 4 | 59,650 | 3 | 1 |
| Churchill County | 8 | 13,950 | 2 | 0 |
| Clark County | 33 | 2,353,296 | 14 | 6 |
| Douglas County | 21 | 46,164 | 9 | 4 |
| Elko County | 17 | 47,401 | 6 | 4 |
| Esmeralda County | 2 | 488 | 1 | 1 |
| Eureka County | 3 | 855 | 1 | 0 |
| Humboldt County | 8 | 11,674 | 3 | 2 |
| Lander County | 3 | 4,335 | 2 | 1 |
| Lincoln County | 5 | 3,660 | 1 | 4 |
| Lyon County | 8 | 51,084 | 4 | 0 |
| Mineral County | 5 | 4,458 | 2 | 2 |
| Nye County | 24 | 27,000 | 11 | 4 |
| Pershing County | 3 | 4,022 | 1 | 0 |
| Storey County | 2 | 2,730 | 1 | 1 |
| Washoe County | 22 | 486,731 | 11 | 5 |
| White Pine County | 4 | 6,755 | 0 | 0 |
Largest systems
| System | Main county | People served | Main source | Health-based violations, 10 years | Unresolved | Lead lines |
|---|---|---|---|---|---|---|
| Las Vegas Valley Water District | Clark County | 1,539,277 | Purchased surface water | 0 | 0 | 0 |
| Truckee Meadows Water Authority | Washoe County | 442,000 | Surface water | 0 | 0 | 0 |
| North Las Vegas Utilities | Clark County | 376,515 | Purchased surface water | 0 | 0 | 0 |
| City of Henderson | Clark County | 336,534 | Purchased surface water | 0 | 0 | 0 |
| Carson City Public Works | Carson City | 59,000 | Surface water | 0 | 0 | 0 |
| Virgin Valley Water District | Clark County | 26,000 | Groundwater | 0 | 0 | 0 |
| Fernley Public Works | Lyon County | 23,064 | Groundwater | 1 | 0 | 0 |
| City of Elko | Elko County | 23,000 | Groundwater | 0 | 0 | 0 |
| Nellis Air Force Base | Clark County | 19,081 | Purchased surface water | 3 | 0 | 0 |
| Sun Valley Gid | Washoe County | 17,000 | Purchased surface water | 0 | 0 | 0 |
| Dayton Valley Water System | Lyon County | 16,000 | Groundwater | 0 | 0 | 0 |
| Boulder City | Clark County | 15,000 | Purchased surface water | 0 | 0 | 0 |
| Great Basin Water Company | Nye County | 12,255 | Groundwater | 0 | 0 | 0 |
| Gardnerville Ranchos Gid | Douglas County | 11,300 | Groundwater | 0 | 1 | 0 |
| Great Basin Water Co Cold Springs | Washoe County | 9,650 | Groundwater | 1 | 0 | 0 |
Systems with unresolved health-based violations
47 systems| System | Main county | People served | Main source | Health-based violations, 10 years | Unresolved | Lead lines |
|---|---|---|---|---|---|---|
| Yomba Indian Reservation | Nye County | 30 | Groundwater | 4 | 71 | 0 |
| Avi Casino | Clark County | 3,001 | Groundwater | 9 | 14 | 0 |
| Battle Mountain | Lander County | 195 | Groundwater | 3 | 8 | 0 |
| Sutcliffe | Washoe County | 250 | Groundwater | 9 | 5 | 0 |
| Rosemount Water Co | Washoe County | 54 | Groundwater | 70 | 5 | 0 |
| Las Vegas Paiute Snow Mountain | Clark County | 2,340 | Groundwater | 2 | 4 | 0 |
| Wadsworth | Washoe County | 950 | Groundwater | 2 | 4 | 0 |
| Las Vegas Paiute Colony | Clark County | 100 | Purchased surface water | 5 | 4 | 0 |
| Duckwater | Nye County | 166 | Groundwater | 13 | 3 | 0 |
| South Fork (Te-Moak) | Elko County | 40 | Groundwater | 6 | 3 | 0 |
| Primm Valley Casino Resorts | Clark County | 7,000 | Groundwater | 12 | 2 | 0 |
| Caliente Public Utilities | Lincoln County | 1,100 | Groundwater | 0 | 2 | 0 |
| Nixon | Washoe County | 800 | Groundwater | 2 | 2 | 0 |
| Walker River Paiute Tribe | Mineral County | 662 | Groundwater | 4 | 2 | 0 |
| Ft. McDermitt Paiute-Shoshone - Lower | Humboldt County | 456 | Groundwater | 4 | 2 | 0 |
| Lander Co Sewer and Water Dist 2 Austin | Lander County | 350 | Groundwater | 4 | 2 | No inventory |
| Elk Point Country Club | Douglas County | 325 | Groundwater | 4 | 2 | No inventory |
| Ft. McDermitt Paiute-Shoshone - Upper | Humboldt County | 110 | Groundwater | 8 | 2 | 0 |
| Rancho Vista 4 | Nye County | 50 | Groundwater | 2 | 2 | 0 |
| Goshute (Lower) | Elko County | 40 | Groundwater | 2 | 2 | 0 |
| Goshute (Upper) | Elko County | 40 | Groundwater | 2 | 2 | 0 |
| Elkhorn Water Association LLC | Clark County | 25 | Groundwater | 7 | 2 | 0 |
| Gardnerville Ranchos Gid | Douglas County | 11,300 | Groundwater | 0 | 1 | 0 |
| Tonopah Public Utilities | Nye County | 2,853 | Groundwater | 0 | 1 | 0 |
| Topaz Ranch Estates Gid and Water Co | Douglas County | 1,545 | Groundwater | 1 | 1 | 0 |
| Canyon Gid | Storey County and 1 other county | 1,310 | Groundwater | 2 | 1 | 0 |
| Jackpot Water System | Elko County | 1,240 | Groundwater | 1 | 1 | 0 |
| Round Mountain Puc | Nye County | 1,200 | Groundwater | 1 | 1 | No inventory |
| Alamo Sewer and Water Gid | Lincoln County | 900 | Groundwater | 0 | 1 | 0 |
| Nevada State Veterans Home Boulder City | Clark County | 708 | Purchased surface water | 7 | 1 | 0 |
| Pioche Public Utilities | Lincoln County | 700 | Groundwater | 0 | 1 | 0 |
| Washoe Tribe Dresslerville Community | Douglas County | 452 | Groundwater | 1 | 1 | 0 |
| Walker Lake Gid | Mineral County | 450 | Groundwater | 1 | 1 | No inventory |
| Cold Creek Canyon Homeowners | Clark County | 180 | Groundwater | 2 | 1 | 0 |
| Duck Valley Owyhee | Elko County | 150 | Groundwater | 1 | 1 | 0 |
| Washoe Tribe Stewart | Washoe County | 150 | Groundwater | 1 | 1 | 0 |
| Cottonwood MHP | Carson City | 140 | Groundwater | 1 | 1 | 0 |
| Silver Peak Water System | Esmeralda County | 138 | Groundwater | 0 | 1 | No inventory |
| Silver Knolls Mutual Water Company | Washoe County | 120 | Groundwater | 37 | 1 | 0 |
| Torrey Pines Tina Ln Wtr Assoc | Clark County | 70 | Groundwater | 2 | 1 | No inventory |
| Pioche Public Utilities Castleton | Lincoln County | 60 | Groundwater | 1 | 1 | 0 |
| C Valley MHP | Nye County | 54 | Groundwater | 1 | 1 | 0 |
| Star Point MHP RV Park | Pershing County | 50 | Groundwater | 8 | 1 | No inventory |
| Palm Gardens Water Co Op | Clark County | 42 | Groundwater | 1 | 1 | 0 |
| Mountain City Water and Sewer | Elko County | 30 | Groundwater | 1 | 1 | 0 |
| Desert Sunrise Water Users Assoc | Clark County | 25 | Groundwater | 11 | 1 | 0 |
| Fort Apache Ann NE Water Assoc | Clark County | 25 | Groundwater | 1 | 1 | 0 |
Counties come from the counties EPA lists each system serving, matched to 2024 Census counties; where EPA lists none, from the county coded in the system's ID, its service area map, or its mailing address. A county holding at least a fifth of a system's service area map is added when at least a fifth of that map lies in those counties. Towns are the ones EPA lists and the Census places such a map covers, always inside those counties. In New England, where EPA's town names a whole Town, it is not matched to the village of the same name. A system is not listed in a county holding less than a fifth of its map, or in a county or town its map reaches when the map lies mostly outside the counties EPA lists, so a page can leave out a system that serves part of the area. Methodology and limitations