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 ranks 41st among all U.S. states for total drinking water violations, out of 51 states tracked. The state has 8,167 EPA Safe Drinking Water Act violations on record across 192 water systems serving 59 cities. Of those, 1,162 are health-based violations, meaning a regulated contaminant was measured above the EPA-established safe level. Nevada's total violation count is 77% below the national average. Water systems in Nevada serve approximately 3,119,117 people. The most frequently cited contaminants in Nevada violations include Fecal Coliform, Barium, Haloacetic Acids, Stage 2 DBP, Chlorine Dioxide.
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 |
Water Quality in Other States
Alabama 13,972 violations Alaska 73,527 violations Arizona 60,414 violations Arkansas 17,031 violations California 39,276 violations Colorado 42,596 violations Connecticut 28,800 violations Delaware 1,242 violations District of Columbia 115 violations Florida 36,335 violations Georgia 32,159 violations Hawaii 182 violations Idaho 26,078 violations Illinois 30,544 violations Indiana 18,261 violations Iowa 9,389 violations Kansas 19,480 violations Kentucky 9,427 violations Louisiana 32,039 violations Maine 6,830 violations Maryland 5,321 violations Massachusetts 10,561 violations Michigan 15,820 violations Minnesota 3,784 violations Mississippi 25,296 violations Missouri 25,377 violations Montana 20,202 violations Nebraska 5,134 violations New Hampshire 6,968 violations New Jersey 19,332 violations New Mexico 37,115 violations New York 93,834 violations North Carolina 54,399 violations North Dakota 8,431 violations Ohio 61,604 violations Oklahoma 128,472 violations Oregon 0 violations Pennsylvania 199,265 violations Rhode Island 0 violations South Carolina 13,045 violations South Dakota 19,565 violations Tennessee 20,607 violations Texas 263,180 violations Utah 71,655 violations Vermont 12,362 violations Virginia 15,298 violations Washington 54,459 violations West Virginia 81,622 violations Wisconsin 18,533 violations Wyoming 13,783 violations
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.