San Juan 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: San Juan County, Washington
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 12.4 (asthma 10.4%, diabetes 10.9%)
Estimated additional annual cost per homeowner: $809, driven primarily by energy_code_gap
55.1% of homes built before 1978 (lead paint era)
Violation History (2021–2025)
↓ Improving trendEPA violation counts by year across San Juan County water systems. Health-based shown in red, total in blue.
Peak year: 2022 with 17 violations. Past 5 years: 47 total (47 health-based). Health-based violations are declining versus the prior 2-year window.
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: $809
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
13,176 housing units in San Juan 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 San Juan County
Remediation costs are relatively manageable for most homeowners in San Juan 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 San Juan County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving San Juan County
8 community water systems serving San Juan County.
Show all 8 water systems
9 total water systems serve San Juan County.
Systems with the most violations in San Juan County
5 water systems with recorded EPA violations.
All ZIP Codes in San Juan County
8 ZIP codes tracked in San Juan County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 98222 | Blakely Island | — | — | $741K | |
| 2 | 98243 | Deer Harbor | — | — | 6 (1 health) | $1044K |
| 3 | 98245 | Eastsound | — | — | 15 (1 health) | $694K |
| 4 | 98250 | Friday Harbor | — | — | 14 (8 health) | $746K |
| 5 | 98261 | Lopez Island | — | — | 1 | $701K |
| 6 | 98279 | Olga | — | — | 12 (1 health) | $821K |
| 7 | 98280 | Orcas | — | — | 6 (1 health) | $927K |
| 8 | 98286 | Shaw Island | — | — | $621K |
Recommended Buyer Guides for San Juan County
While many sites publish identical guide lists across every county they cover, the selection here changes by location - driven by the EPA, NSF, FEMA, and CDC datasets that describe the actual conditions documented for this jurisdiction in the federal record.
- Best Lead Paint Test Kits — 55.1% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
Deep Dive Reports
Detailed analysis for San Juan County, Washington
Overview
San Juan 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.
6 of 6 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 9 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.