Denali County, Alaska
5 ZIP codes · Avg score 57/100 · Grade C · Updated 2026-06-03
Denali County's water quality grade reflects a middle-ground assessment — its 5 ZIP codes range from fully compliant to violation-flagged.
How Denali County Compares
How Denali County Compares
Denali County scores 18 points below the Alaska state average (75/100) and 11 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Denali County, Alaska
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 11.6 (asthma 9.9%, diabetes 8.6%)
Estimated additional annual cost per homeowner: $464, driven primarily by wildfire
Infrastructure: 0.3% avg pipe failure probability
50.8% of homes built before 1978 (lead paint era)
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: $464
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
1,321 housing units in Denali County
Source: U.S. Census Bureau ACS B25034 (Year Structure Built).
Health Outcomes vs National Average
CDC PLACES data for Denali County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
All ZIP Codes in Denali County
5 ZIP codes tracked in Denali County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 99704 | Clear | 86 | A | 3 | — |
| 2 | 99729 | Cantwell | 50 | D | 0 | $221K |
| 3 | 99743 | Healy | 50 | D | 0 | $309K |
| 4 | 99744 | Anderson | 50 | D | 0 | $176K |
| 5 | 99755 | Denali National Park | 50 | D | 0 | $458K |
Recommended Buyer Guides for Denali County
Where county records show a lead exceedance or pre-1978 housing concentration, lead-specific filters and test kits move toward the top of the list.
- Best Lead Paint Test Kits — 50.8% of homes built before 1978
- Best HEPA Air Purifiers for Wildfire Smoke — Wildfire is the top compound risk factor
Overview
Denali County in Alaska covers 5 ZIP codes with an average Home Safety Score of C (57/100).
1 of 5 ZIP codes have recorded EPA violations. All violations are monitoring/reporting type.
← Back to Alaska 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.