Nevada County Water Quality Reports
Water quality reports for all counties in Nevada. Browse by county to see safety scores, violations, and ZIP code data.
Browse water quality data by county in Nevada. Each county page lists all ZIP codes with safety scores and EPA violation data.
Carson County, NV: 9 Violations — 86/100 (2026)
2026 report: Carson County, NV scores 86/100 (Grade A). 9 ZIP codes analyzed. 9 EPA violations found. Free report with contaminant data and filter picks.
Churchill County, NV: 3 Violations — 81/100 (2026)
2026 report: Churchill County, NV scores 81/100 (Grade B). 3 ZIP codes analyzed. 3 EPA violations found. Free report with contaminant data and filter pi...
Clark County, NV: 81 Health Violations — 91/100 (2026)
2026 report: Clark County, NV scores 91/100 (Grade A). 125 ZIP codes analyzed. 358 EPA violations found. Free report with contaminant data and filter pi...
Douglas County, NV: 5 Health Violations — 59/100 (2026)
2026 report: Douglas County, NV scores 59/100 (Grade C). 11 ZIP codes analyzed. 36 EPA violations found. Free report with contaminant data and filter pi...
Elko County, NV: 34 Violations — 74/100 (2026)
2026 report: Elko County, NV scores 74/100 (Grade B). 17 ZIP codes analyzed. 34 EPA violations found. Free report with contaminant data and filter picks.
Esmeralda County, NV: 1 Health Violation — 62/100 (2026)
2026 report: Esmeralda County, NV scores 62/100 (Grade C). 3 ZIP codes analyzed. 14 EPA violations found. Free report with contaminant data and filter p...
Eureka County, NV: 1 Health Violation — 69/100 (2026)
2026 report: Eureka County, NV scores 69/100 (Grade C). 1 ZIP code analyzed. 5 EPA violations found. Free report with contaminant data and filter picks.
Humboldt County, NV: 1 Health Violation — 70/100 (2026)
2026 report: Humboldt County, NV scores 70/100 (Grade B). 8 ZIP codes analyzed. 15 EPA violations found. Free report with contaminant data and filter pi...
Lander County, NV: 5 Health Violations — 52/100 (2026)
2026 report: Lander County, NV scores 52/100 (Grade D). 3 ZIP codes analyzed. 36 EPA violations found. Free report with contaminant data and filter picks.
Lincoln County, NV: 19 Violations — 57/100 (2026)
2026 report: Lincoln County, NV scores 57/100 (Grade C). 5 ZIP codes analyzed. 19 EPA violations found. Free report with contaminant data and filter picks.
Lyon County, NV: 2 Health Violations — 60/100 (2026)
2026 report: Lyon County, NV scores 60/100 (Grade C). 6 ZIP codes analyzed. 13 EPA violations found. Free report with contaminant data and filter picks.
Mineral County, NV: 1 Health Violation — 49/100 (2026)
2026 report: Mineral County, NV scores 49/100 (Grade D). 3 ZIP codes analyzed. 4 EPA violations found. Free report with contaminant data and filter picks.
Nye County, NV: PFAS Found in Water — 76/100 (2026)
2026 report: Nye County, NV scores 76/100 (Grade B). 10 ZIP codes analyzed. 14 EPA violations found. PFAS detected. Free report with contaminant data an...
Pershing County, NV: High Radon Risk — 68/100 (2026)
2026 report: Pershing County, NV scores 68/100 (Grade C). 2 ZIP codes analyzed. No EPA violations. Free report with contaminant data and filter picks.
Storey County, NV: 6 Violations — 74/100 (2026)
2026 report: Storey County, NV scores 74/100 (Grade B). 3 ZIP codes analyzed. 6 EPA violations found. Free report with contaminant data and filter picks.
Washoe County, NV: 24 Health Violations — 78/100 (2026)
2026 report: Washoe County, NV scores 78/100 (Grade B). 38 ZIP codes analyzed. 118 EPA violations found. Free report with contaminant data and filter pi...
White Pine County, NV: 7 Violations — 53/100 (2026)
2026 report: White Pine County, NV scores 53/100 (Grade D). 7 ZIP codes analyzed. 7 EPA violations found. Free report with contaminant data and filter p...
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