Humboldt County, Nevada
8 ZIP codes · Avg score 70/100 · Grade B · Updated 2026-06-03
In recent assessments, Humboldt County's 8 ZIP codes record strong, consistent water safety outcomes.
How Humboldt County Compares
How Humboldt County Compares
Humboldt County scores 11 points below the Nevada state average (81/100) and 2 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Humboldt County, Nevada
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 13 (asthma 10.7%, diabetes 11.5%)
Estimated additional annual cost per homeowner: $778, driven primarily by energy_code_gap
Infrastructure: 0.304% avg pipe failure probability, 13% of ZIPs at high risk
54.1% of homes built before 1978 (lead paint era)
Violation History (2021–2024)
→ Stable trendEPA violation counts by year across Humboldt County water systems. Health-based shown in red, total in blue.
Peak year: 2021 with 4 violations. Past 5 years: 5 total (5 health-based).
Source: EPA SDWIS historical violations. Data may lag 6–12 months for the most recent year.
County Health Indicators vs National Average
Black markers indicate national averages. Source: CDC PLACES, Census ACS.
Infrastructure Overview
Sources: Census ACS (housing age), EPA SDWIS (infrastructure risk model), state bridge inspection data.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $778
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
8,247 housing units in Humboldt County
Source: U.S. Census Bureau ACS B25034 (Year Structure Built).
Water Safety Affordability
How much it costs to fix water issues relative to home values in Humboldt County
Remediation costs are relatively manageable for most homeowners in Humboldt County, representing a small fraction of property value.
Remediation includes water filtration, lead abatement, radon mitigation, and flood protection where applicable. Source: Census ACS, EPA SDWIS.
Health Outcomes vs National Average
CDC PLACES data for Humboldt County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water Systems with Most Violations
Top 5 systems in Humboldt County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | City of Winnemucca | 8,518 | 12 |
| 2 | Gold Country Estates | 1,695 | 12 |
| 3 | Star City Properties | 285 | 12 |
| 4 | Valley View Rv Park | 250 | 12 |
| 5 | Mcdermitt Water System | 200 | 12 |
8 total water systems serve Humboldt County.
All ZIP Codes in Humboldt County
8 ZIP codes tracked in Humboldt County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 89414 | Golconda | 83 | B | 0 | — |
| 2 | 89425 | Orovada | 83 | B | 0 | $301K |
| 3 | 89438 | Valmy | 82 | B | 3 (1 health) | — |
| 4 | 89446 | Winnemucca | 77 | B | 6 | — |
| 5 | 89445 | Winnemucca | 72 | B | 6 | $258K |
| 6 | 89404 | Denio | 53 | D | 0 | — |
| 7 | 89421 | Mc Dermitt | 53 | D | 0 | $80K |
| 8 | 89426 | Paradise Valley | 53 | D | 0 | $117K |
Recommended Buyer Guides for Humboldt County
If FEMA records flag flood-top-risk status or EPA samples show PFAS exceedances, the matching logic lifts emergency-water and PFAS-rated filtration into the recommendations — federal data drives the order, not retailer arrangements.
- Best Lead Paint Test Kits — 54.1% of homes built before 1978
Deep Dive Reports
Detailed analysis for Humboldt County, Nevada
Overview
Humboldt County in Nevada covers 8 ZIP codes with an average Home Safety Score of B (70/100).
3 of 8 ZIP codes have recorded EPA violations. 1 health-based violation have been documented.
← Back to Nevada water quality report
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Updated daily.