Water Quality in Nevada
192 water systems • 59 cities • EPA SDWIS Data
192
Water Systems
8,167
Total Violations
1,162
Health-Based Violations
3,119,117
Population Served
Overview
Nevada has 192 active community water systems serving 3,119,117 people. These systems have accumulated 8,167 EPA Safe Drinking Water Act violations on record, of which 1,162 are health-based violations (meaning a contaminant exceeded safe levels).
Common contaminants found in violations: Fecal Coliform, Barium, Haloacetic Acids, Stage 2 DBP, Chlorine Dioxide, Nitrate, E. coli, Gross Alpha, cis-1,2-Dichloroethylene, Selenium.
Cities with Most Violations in Nevada
| # | City | Violations | Health-Based | Water Systems | Population |
|---|---|---|---|---|---|
| 1 | Las Vegas | 1,821 | 219 | 34 | 1,573,138 |
| 2 | Reno | 1,106 | 287 | 21 | 457,201 |
| 3 | Fallon | 553 | 45 | 6 | 13,632 |
| 4 | Yerington | 411 | 3 | 2 | 5,390 |
| 5 | Pahrump | 187 | 5 | 15 | 19,832 |
| 6 | Mesquite | 165 | 0 | 1 | 26,000 |
| 7 | Gerlach | 153 | 1 | 2 | 530 |
| 8 | Minden | 145 | 13 | 11 | 14,118 |
| 9 | Gardnerville | 141 | 6 | 5 | 16,070 |
| 10 | Alamo | 106 | 3 | 1 | 900 |
Largest Cities in Nevada
| # | City | Population | Violations | Water Systems |
|---|---|---|---|---|
| 1 | Las Vegas | 1,573,138 | 1,821 | 34 |
| 2 | Reno | 457,201 | 1,106 | 21 |
| 3 | North Las Vegas | 376,515 | 0 | 1 |
| 4 | Henderson | 336,943 | 34 | 6 |
| 5 | Carson City | 65,332 | 48 | 5 |
| 6 | Mesquite | 26,000 | 165 | 1 |
| 7 | Elko | 23,719 | 58 | 6 |
| 8 | Fernley | 23,064 | 3 | 1 |
| 9 | Pahrump | 19,832 | 187 | 15 |
| 10 | Nellis Afb | 19,081 | 4 | 1 |
All Cities in Nevada
| City | Population | Violations | Health Violations | Contaminants |
|---|---|---|---|---|
| Las Vegas | 1,573,138 | 1,821 | 219 | Barium, Chlorine Dioxide, E. coli +3 more |
| Reno | 457,201 | 1,106 | 287 | Barium, Chlorine Dioxide, Disinfection Byproducts +4 more |
| North Las Vegas | 376,515 | 0 | 0 | |
| Henderson | 336,943 | 34 | 1 | Chlorine Dioxide |
| Carson City | 65,332 | 48 | 3 | E. coli, Stage 2 DBP |
| Mesquite | 26,000 | 165 | 0 | |
| Elko | 23,719 | 58 | 2 | Fecal Coliform |
| Fernley | 23,064 | 3 | 1 | Stage 2 DBP |
| Pahrump | 19,832 | 187 | 5 | Chlorine Dioxide, E. coli, Stage 2 DBP |
| Nellis Afb | 19,081 | 4 | 3 | TTHM |
| Sun Valley | 17,000 | 2 | 0 | |
| Boulder City | 16,214 | 51 | 0 | |
| Gardnerville | 16,070 | 141 | 6 | Chlorine Dioxide, Stage 2 DBP, cis-1,2-Dichloroethylene |
| Dayton | 16,000 | 0 | 0 | |
| Minden | 14,118 | 145 | 13 | Chlorine Dioxide, Disinfection Byproducts |
| Fallon | 13,632 | 553 | 45 | Barium, Chlorine Dioxide, E. coli +1 more |
| Spring Creek | 13,015 | 5 | 0 | |
| Winnemucca | 10,948 | 62 | 20 | Barium |
| Incline Village | 9,313 | 17 | 0 | |
| Overton | 8,500 | 6 | 0 | |
| Yerington | 5,390 | 411 | 3 | Haloacetic Acids |
| Ely | 5,000 | 39 | 0 | |
| West Wendover | 4,535 | 4 | 0 | |
| Stateline | 3,839 | 8 | 1 | Fecal Coliform |
| Hawthorne | 3,796 | 42 | 7 | Fecal Coliform, Stage 2 DBP, TTHM |
| Lovelock | 3,762 | 4 | 0 | |
| Battle Mountian | 3,635 | 4 | 1 | Stage 2 DBP |
| Silver Springs | 3,070 | 46 | 0 | |
| Tonopah | 2,853 | 8 | 0 | |
| Carlin | 2,500 | 2 | 0 | |
| Mcgill | 1,670 | 10 | 0 | |
| Stagecoach | 1,628 | 30 | 6 | Barium |
| Wellington | 1,545 | 25 | 0 | |
| Zephyr Cove | 1,525 | 86 | 12 | Haloacetic Acids, Stage 2 DBP |
| Round Mountain | 1,450 | 33 | 5 | Barium, Stage 2 DBP |
| Virgina City | 1,420 | 16 | 0 | |
| Sparks | 1,345 | 21 | 2 | Barium |
| Wells | 1,300 | 3 | 0 | |
| Jackpot | 1,240 | 32 | 1 | Chlorine Dioxide |
| Caliente | 1,100 | 14 | 0 | |
| Beatty | 1,024 | 10 | 5 | Barium |
| Glenbrook | 1,000 | 13 | 1 | Stage 2 DBP |
| Eureka | 987 | 17 | 1 | Barium |
| Alamo | 900 | 106 | 3 | Barium |
| Indian Springs | 900 | 59 | 0 | |
| Panaca | 900 | 1 | 0 | |
| Pioche | 760 | 93 | 1 | E. coli |
| Boulder | 708 | 41 | 10 | Contaminant 1009, TTHM |
| Gerlach | 530 | 153 | 1 | Chlorine Dioxide |
| Goldfield | 488 | 47 | 8 | Barium |
| Garden Grove | 375 | 5 | 2 | Chlorine Dioxide |
| Battle Mountain | 350 | 37 | 4 | Chlorine Dioxide, Haloacetic Acids, Stage 2 DBP |
| Austin | 350 | 2 | 0 | |
| Golconda | 210 | 9 | 0 | |
| Lamoille | 200 | 18 | 1 | Chlorine |
| Orovada | 200 | 2 | 0 | |
| Pasadena | 190 | 8 | 0 | |
| Graeagle | 120 | 8 | 0 | |
| Sandy Valley | 110 | 5 | 0 |
Data Sources
Drinking water data from the EPA Safe Drinking Water Information System (SDWIS). Only active community water systems (CWS) serving 100+ people are included.