Aleutians West County, Alaska
6 ZIP codes · Avg score 73/100 · Grade B · Updated 2026-06-04
Covering 6 ZIP codes, Aleutians West County earns a high grade for tap water — most systems report zero health-based violations, and the overall compliance rate comfortably exceeds federal benchmarks.
How Aleutians West County Compares
How Aleutians West County Compares
Aleutians West County scores 2 points below the Alaska state average (75/100) and 5 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-04
ZIP Code Risk Map
Water Quality Map: Aleutians West County, Alaska
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 10.7 (asthma 7.8%, diabetes 10.8%)
Estimated additional annual cost per homeowner: $685, driven primarily by water_lead
Infrastructure: 0.487% avg pipe failure probability, 67% of ZIPs at high risk
60.8% of homes built before 1978 (lead paint era)
Violation History (2023–2025)
→ Stable trendEPA violation counts by year across Aleutians West County water systems. Health-based shown in red, total in blue.
Peak year: 2025 with 4 violations. Past 5 years: 7 total (7 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: $685
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
1,281 housing units in Aleutians West 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 Aleutians West County
Remediation costs are relatively manageable for most homeowners in Aleutians West 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 Aleutians West County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water Systems with Most Violations
Top 4 systems in Aleutians West County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Adak Utilities | 325 | 40 |
| 2 | Atka | 50 | 30 |
| 3 | UNALASKA WATER SYSTEM | 9,400 | 11 |
| 4 | Nikolski Village | 34 | 0 |
All ZIP Codes in Aleutians West County
6 ZIP codes tracked in Aleutians West County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 99547 | Atka | 94 | A | 30 (1 health) | $113K |
| 2 | 99685 | Unalaska | 94 | A | 11 | $449K |
| 3 | 99638 | Nikolski | 88 | A | 0 | — |
| 4 | 99546 | Adak | 62 | C | 40 (6 health) | $78K |
| 5 | 99591 | Saint George Island | 50 | D | 0 | $85K |
| 6 | 99692 | Dutch Harbor | 50 | D | 0 | — |
Recommended Buyer Guides for Aleutians West County
Designed to find the guide that fits the county, not the other way around — the system reads EPA detections, FEMA hazard layers, and CDC lead-exposure markers, then outputs the categories that resolve those specific risks for households here, with NSF-certified products surfaced when the matching contaminant appears in the local monitoring data.
- Best Lead Paint Test Kits — 60.8% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
Deep Dive Reports
Detailed analysis for Aleutians West County, Alaska
Overview
Aleutians West County in Alaska covers 6 ZIP codes with an average Home Safety Score of B (73/100).
3 of 6 ZIP codes have recorded EPA violations. 7 health-based violations have been documented.
← 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.