Nevada Water Quality
Health violation data for 228 community water systems in Nevada. Based on EPA Safe Drinking Water Information System (SDWIS) data.
Water Systems
228
Total Violations
970
Systems with Violations
50
Cities with Issues
42
Water Systems with Most Violations
| # | Water System | Violations | Health |
|---|---|---|---|
| 1 | ROSEMOUNT WATER CO Reno | 205 | Yes |
| 2 | SHOSHONE ESTATES WATER CO INC Las Vegas | 110 | Yes |
| 3 | KATHERINE LANDING DWTP Boulder City | 60 | Yes |
| 4 | SILVER KNOLLS MUTUAL WATER COMPANY Reno | 55 | Yes |
| 5 | ROARK ESTATES WATER ASSOC Sloan | 49 | Yes |
| 6 | OLD RIVER WATER COMPANY Fallon | 43 | Yes |
| 7 | DESERT SUNRISE WATER USERS ASSOC Las Vegas | 30 | Yes |
| 8 | Duckwater Duckwater | 28 | Yes |
| 9 | MCDERMITT WATER SYSTEM Winnemucca | 20 | Yes |
| 10 | Yerington (Campbell Ranch) Yerington | 19 | Yes |
| 11 | Ft. McDermitt Paiute-Shoshone - Upper Mcdermitt | 18 | Yes |
| 12 | Las Vegas Paiute Colony Las Vegas | 17 | Yes |
| 13 | South Fork (Te-Moak) Elko | 15 | Yes |
| 14 | SUTCLIFFE MOBILE PARK Reno | 13 | Yes |
| 15 | Walker River Paiute Tribe Schurz | 12 | Yes |
| 16 | ELK POINT COUNTRY CLUB Zephyr Cove | 12 | Yes |
| 17 | PRIMM VALLEY CASINO RESORTS Las Vegas | 12 | Yes |
| 18 | BERMUDA PALMS MANAGEMENT LLC Las Vegas | 11 | Yes |
| 19 | ELKHORN WATER ASSOCIATION LLC Las Vegas | 11 | Yes |
| 20 | Ft. McDermitt Paiute-Shoshone - Lower Mcdermitt | 10 | Yes |
| 21 | EQUESTRIAN ESTATES CO OP WATER ASSOC Las Vegas | 10 | Yes |
| 22 | NEVADA STATE VETERANS HOME BOULDER CITY Boulder | 10 | Yes |
| 23 | SIERRA COUNTRY ESTATES Minden | 10 | Yes |
| 24 | OSPREY MOBILE HOME PARK Las Vegas | 10 | Yes |
| 25 | SHETLAND WATER DISTRICT Las Vegas | 9 | Yes |
| 26 | GOLDFIELD TOWN WATER Goldfield | 8 | Yes |
| 27 | BLUE DIAMOND WATER CO OP INC Las Vegas | 8 | Yes |
| 28 | Las Vegas Paiute Snow Mountain Las Vegas | 7 | Yes |
| 29 | STAGECOACH GID Stagecoach | 6 | Yes |
| 30 | HAWTHORNE ARMY DEPOT Hawthorne | 6 | Yes |
| 31 | PINE VILLAGE MHP Henderson | 5 | Yes |
| 32 | BEATTY WATER AND SANITATION DISTRICT Beatty | 5 | Yes |
| 33 | LUNA VISTA Las Vegas | 5 | Yes |
| 34 | Yomba Indian Reservation Austin | 4 | Yes |
| 35 | Duck Valley Newtown Owyhee | 4 | Yes |
| 36 | LANDER CO SEWER AND WATER DIST 2 AUSTIN Battle Mountain | 4 | Yes |
| 37 | TOPAZ LAKE WATER CO INC Gardnerville | 4 | Yes |
| 38 | CARVERS SMOKEY VALLEY RV AND MHP Round Mountain | 4 | Yes |
| 39 | MOUNT ROSE BOWL PROPERTY OWNERS WATER CO Reno | 4 | Yes |
| 40 | Battle Mountain Battle Mountain | 3 | Yes |
| 41 | PLANTATION ACRES MHP Las Vegas | 3 | Yes |
| 42 | ALAMO SEWER AND WATER GID Alamo | 3 | Yes |
| 43 | YERINGTON CITY OF Yerington | 3 | Yes |
| 44 | NELLIS AIR FORCE BASE Nellis Afb | 3 | Yes |
| 45 | SOUTHERN DESERT CORRECTIONAL CTR NDOC Las Vegas | 3 | Yes |
| 46 | MERRITT MOBILE HOME & RV PARK Las Vegas | 3 | Yes |
| 47 | Washoe Tribe Carson Colony Gardnerville | 2 | Yes |
| 48 | WOODFORDS MUTUAL WATER COMPANY Minden | 2 | Yes |
| 49 | WESTERN HILLS MHP Las Vegas | 2 | Yes |
| 50 | LAKECREST MOBILE COURT Reno | 2 | Yes |
Most Common Contaminants in Nevada
| Contaminant | Violations | Systems Affected |
|---|---|---|
| Barium | 356 | 20 |
| Lead (Action Level) | 220 | 4 |
| Fluoride | 189 | 42 |
| Haloacetic Acids (HAA5) | 45 | 1 |
| Total Trihalomethanes (TTHM) | 41 | 5 |
| E. coli | 33 | 15 |
| Gross Alpha | 25 | 25 |
| Combined Radium 226/228 | 21 | 6 |
| Total Coliform (RTCR) | 7 | 3 |
| Contaminant 1009 | 7 | 1 |
| Arsenic | 6 | 5 |
| Contaminant 1024 | 5 | 1 |
| Contaminant 2987 | 4 | 1 |
| Chlorine | 4 | 3 |
| Lead & Copper Rule | 3 | 1 |
Cities with Water Quality Issues
Henderson Beatty Boulder City Las Vegas Round Mountain Sloan Nellis Afb Eureka Fallon Fernley Gardnerville Hawthorne Minden Sparks Valmy Winnemucca Reno Carson City Elko Battle Mountain Pahrump Owyhee Duckwater Mcdermitt Yerington Austin Schurz Crystal Bay Stateline Alamo Battle Mountian Gerlach Goldfield Jackpot Mountain City Pioche Stagecoach Zephyr Cove Lamoille Glenbrook +2 more
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About This Data
Water quality data is from the EPA Safe Drinking Water Information System (SDWIS). Health-based violations include Maximum Contaminant Level (MCL) and Treatment Technique (TT) violations. Only community water systems (CWS) in Nevada are included.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.