Colusa County, California
5 ZIP codes · Avg score 99/100 · Grade A · Updated
ZipCheckup grade for Colusa County: A.
No federal data flags a major home-safety concern for this ZIP.
Within Colusa County's 5 tracked ZIP codes, safety indicators remain above the national average with few health-based violations on record.
How Colusa County Compares
How Colusa County Compares
Colusa County scores 23 points above the California state average (76/100) and 26 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: Colusa County, California
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 12.5 (asthma 9.8%, diabetes 13.4%)
Estimated additional annual cost per homeowner: $2,248, driven primarily by flood
59.4% 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
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: $2,248
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
7,693 housing units in Colusa 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 Colusa County
Remediation costs are relatively manageable for most homeowners in Colusa 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 Colusa County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving Colusa County
2 community water systems serving Colusa County.
- A
- A
Systems with the most violations in Colusa County
1 water system with recorded EPA violations.
- A
All ZIP Codes in Colusa County
5 ZIP codes tracked in Colusa County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 95932 | Colusa | 99 | A | 2 | $367K |
| 2 | 95987 | Williams | 99 | A | 2 | $372K |
| 3 | 95912 | Arbuckle | — | — | 2 | $425K |
| 4 | 95955 | Maxwell | — | — | 2 | $289K |
| 5 | 95979 | Stonyford | — | — | $247K |
Recommended Buyer Guides for Colusa 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 — 59.4% of homes built before 1978
- 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 Colusa County, California
Overview
Colusa County in California covers 5 tracked ZIP records with an average Home Safety Score of A (99/100) across 2 scored records.
4 of 4 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. The available record reports no health-based violations for this measured scope.
← 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.