Sitka County, Alaska
1 ZIP code · Avg score 64/100 · Grade C · Updated 2026-06-03
Sitka County's water quality grade reflects a middle-ground assessment — its 1 ZIP code range from fully compliant to violation-flagged.
How Sitka County Compares
How Sitka County Compares
Sitka County scores 11 points below the Alaska state average (75/100) and 4 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
Key Risk Factors
Health risk index: 11.8 (asthma 10.1%, diabetes 9.9%)
Estimated additional annual cost per homeowner: $1,500, driven primarily by flood
Infrastructure: 0.55% avg pipe failure probability, 100% of ZIPs at high risk
69% 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: $1,500
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
4,080 housing units in Sitka 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 Sitka County
Remediation costs are relatively manageable for most homeowners in Sitka 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 Sitka County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
All ZIP Codes in Sitka County
1 ZIP code tracked in Sitka County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 99835 | Sitka | 64 | C | 0 | $442K |
Recommended Buyer Guides for Sitka County
Retailer arrangements don't shape what appears here — the selection logic is independent, filtered against EPA detections and the federal hazard data on file for this county.
- Best Lead Paint Test Kits — 69% of homes built before 1978
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
- Best Sump Pumps — Flood is the top compound risk factor
- Best Mold Test Kits — Flood-driven moisture and mold risk
Overview
Sitka County in Alaska covers 1 ZIP code with an average Home Safety Score of C (64/100).
No EPA violations recorded across any tracked ZIP codes in Sitka County.
← 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.