Solano County, California
16 ZIP codes · Avg score 93/100 · Grade A · Updated
ZipCheckup grade for Solano County: A.
No federal data flags a major home-safety concern for this ZIP.
Unlike many counties its size, Solano County keeps violation rates low - all 16 ZIP codes score at or above the state average for tap water safety, with no systemic concerns flagged in the current data set.
How Solano County Compares
How Solano County Compares
Solano County scores 17 points above the California state average (76/100) and 20 points above the national average (73/100).
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: Solano County, California
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 11.7 (asthma 10.1%, diabetes 12.1%)
Estimated additional annual cost per homeowner: $2,279, driven primarily by flood
57.2% of homes built before 1978 (lead paint era)
Violation History (2021–2024)
↑ Worsening trendEPA violation counts by year across Solano County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 24 violations. Past 5 years: 42 total (42 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: $2,279
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
154,885 housing units in Solano 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 Solano County
Remediation costs are relatively manageable for most homeowners in Solano 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 Solano County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving Solano County
8 community water systems serving Solano County.
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Show all 8 water systems
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16 total water systems serve Solano County.
Systems with the most violations in Solano County
3 water systems with recorded EPA violations.
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All ZIP Codes in Solano County
16 ZIP codes tracked in Solano County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 94571 | Rio Vista | 100 | A | 0 | $480K |
| 2 | 94589 | Vallejo | 100 | A | 0 | $479K |
| 3 | 94590 | Vallejo | 100 | A | 0 | $511K |
| 4 | 94510 | Benicia | 96 | A | 2 (1 health) | $779K |
| 5 | 94535 | Travis Afb | 96 | A | 2 (1 health) | — |
| 6 | 94591 | Vallejo | 96 | A | 2 (1 health) | $602K |
| 7 | 94534 | Fairfield | 95 | A | 3 (1 health) | $701K |
| 8 | 94533 | Fairfield | 85 | A | 14 (12 health) | $497K |
| 9 | 94585 | Suisun City | 85 | A | 14 (12 health) | $551K |
| 10 | 95687 | Vacaville | 83 | B | 0 | $584K |
| 11 | 95688 | Vacaville | 83 | B | 0 | $657K |
| 12 | 94512 | Birds Landing | — | — | 0 | — |
| 13 | 94592 | Vallejo | — | — | 0 | $681K |
| 14 | 95625 | Elmira | — | — | 0 | — |
| 15 | 95690 | Walnut Grove | — | — | 0 | $711K |
| 16 | 95696 | Vacaville | — | — | — |
Recommended Buyer Guides for Solano County
Independent picks. EPA-grounded. Matched here.
- Best Lead Paint Test Kits — 57.2% of homes built before 1978
- 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 Solano County, California
Overview
Solano County in California covers 16 tracked ZIP records with an average Home Safety Score of A (93/100) across 11 scored records.
6 of 15 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 12 health-based violations appear in the available health breakdown.
← Back to California 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.