County · Nevada
Washoe County, Nevada: drinking water records
This overview covers 26 ZIP codes and 26 community water systems in Washoe County. It also stands in for 0 ZIP codes whose utility has too little EPA data for a page of its own.
System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.
Water systems with the most complete records
| Water system | People served | PFAS survey results | PFAS found | Health-based violations | Lead, 9 in 10 homes at or below |
|---|---|---|---|---|---|
| Great Basin Water Co Cold Springs NV0000207 | 9,910 | 300 | 3 | 1 | 0 ppb |
| Truckee Meadows Water Authority NV0000190 | 442,000 | 4,260 | 8 | 0 | 0 ppb |
| Sun Valley Gid NV0000211 | 17,000 | 120 | 0 | 0 | 2 ppb |
| Incline Village Gid NV0000158 | 9,313 | 240 | 0 | 0 | 1.4 ppb |
| Great Basin Water Co Spanish Springs NV0001086 | 1,450 | 0 | 0 | 1 | 0 ppb |
| Steamboat Springs Waterworks INC NV0000282 | 998 | 0 | 0 | 1 | 0 ppb |
| Grandview Terrace Water District NV0000035 | 328 | 0 | 0 | 1 | 1 ppb |
| Gerlach Gid NV0000071 | 180 | 0 | 0 | 1 | 2 ppb |
| Washoe Tribe Stewart 093200359 | 150 | 0 | 0 | 1 | 1.5 ppb |
| Silver Knolls Mutual Water Company NV0004021 | 120 | 0 | 0 | 38 | 0 ppb |
| Sutcliffe Mobile Park NV0000765 | 60 | 0 | 0 | 6 | 0 ppb |
| Rosemount Water Co NV0000767 | 54 | 0 | 0 | 70 | 0 ppb |
| Hungry Valley (Reno-Sparks) 093200369 | 620 | 0 | 0 | 0 | 1 ppb |
| Verdi Meadows Utility Company INC NV0000196 | 510 | 0 | 0 | 0 | 0 ppb |
| Reno Sparks Indian Colony 093200379 | 457 | 0 | 0 | 0 | 0.7 ppb |
| Empire Mining Company NV0000042 | 350 | 0 | 0 | 0 | 0 ppb |
| Lightning W NV0000865 | 163 | 0 | 0 | 0 | 1.1 ppb |
| Old Washoe Estates NV0002526 | 135 | 0 | 0 | 0 | 0 ppb |
| Stampmill NV0000801 | 118 | 0 | 0 | 0 | 0 ppb |
| Sunrise Estates NV0002525 | 90 | 0 | 0 | 0 | 2 ppb |
| Wadsworth Mobile Home Park NV0000281 | 90 | 0 | 0 | 0 | 0 ppb |
| Rio Vista Nv LLC NV0000191 | 65 | 0 | 0 | 0 | 1.3 ppb |
| Ke Ta Mobile Home Park NV0000199 | 60 | 0 | 0 | 0 | 5 ppb |
| Mount Rose Bowl Property Owners Water Co NV0000732 | 40 | 0 | 0 | 0 | 1.6 ppb |
| Alpine Mobile Home Park NV0000200 | 35 | 0 | 0 | 0 | 3 ppb |
ZIP reports in Washoe County
No ZIP report in this county is published yet.
Sources and scope
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Page generated 2026-09-03.
Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.