Island County, Washington
8 ZIP codes · Home Safety Score unavailable · 0 of 8 tracked ZIP records scored · Updated
Data: ZipCheckup Home Safety Score model 4.0.0; EPA SDWIS, UCMR 5, EPA radon zones, EPA AirData Last verified:
ZIP Code Risk Map
Water Quality Map: Island County, Washington
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 12.2 (asthma 10.4%, diabetes 10.2%)
Estimated additional annual cost per homeowner: $2,155, driven primarily by flood
44.7% of homes built before 1978 (lead paint era)
Violation History (2021–2025)
↑ Worsening trendEPA violation counts by year across Island County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 24 violations. Past 5 years: 46 total (46 health-based). Health-based violations are rising versus the prior 2-year window - worth closer monitoring.
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
Modeled area-level indicator, not a failure probability. Sources: Census ACS housing age, EPA DWINS infrastructure needs, EPA SDWIS violations, and EPA lead indicators.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $2,155
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
50,135 housing units in Island 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 Island County
Remediation costs are relatively manageable for most homeowners in Island 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 Island County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving Island County
8 community water systems serving Island County.
Show all 8 water systems
32 total water systems serve Island County.
Systems with the most violations in Island County
5 water systems with recorded EPA violations.
All ZIP Codes in Island County
8 ZIP codes tracked in Island County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 98236 | Clinton | — | — | 14 (1 health) | $611K |
| 2 | 98239 | Coupeville | — | — | 80 (33 health) | $578K |
| 3 | 98249 | Freeland | — | — | 48 (10 health) | $586K |
| 4 | 98260 | Langley | — | — | 57 (29 health) | $646K |
| 5 | 98277 | Oak Harbor | — | — | 152 (41 health) | $455K |
| 6 | 98278 | Oak Harbor | — | — | 0 | — |
| 7 | 98282 | Camano Island | — | — | 92 (16 health) | $600K |
| 8 | 98292 | Stanwood | — | — | 16 | $611K |
Recommended Buyer Guides for Island County
Strictly editorial - no paid placements influence which guides appear; the selection draws on NSF certifications and EPA detection records for water systems serving this county.
- Best Water Filters for PFAS — PFAS detected in 1 ZIP code
- Best Water Filters for Lead — Lead above EPA action level in 2 ZIP codes
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- Best Sump Pumps — Flood is the top compound risk factor
- Best Mold Test Kits — Flood-driven moisture and mold risk
Deep Dive Reports
Detailed analysis for Island County, Washington
Overview
Island County in Washington covers 8 tracked ZIP records. No Home Safety Score is published because the required model evidence is incomplete for every tracked record; missing evidence is not treated as zero.
7 of 8 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 87 health-based violations appear in the available health breakdown.
← Back to Washington Home Safety Profile
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- PFAS screening: EPA UCMR 5
- Radon zones: EPA Map of Radon Zones
- Air quality: EPA AirData annual AQI
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.