Out of 0 ZIP codes with data across all 50 states, these are the highest-ranked areas for purchase risk. Each ZIP links to a full safety report with water quality, lead, radon, and flood data.
Top 0 Worst ZIP Codes
| Rank | ZIP Code | City | State | Purchase Risk | Safety Score |
|---|
Rankings by State
| State | ZIP Codes Ranked |
|---|
Methodology
The Home Purchase Risk Score combines available water-compliance, annualized historical NFIP reported payment-component, lead, energy-burden, housing-age, radon, and air-quality indicators. Missing components are omitted and weights are renormalized. The NFIP input is not current map coverage, an insurance requirement, a premium, or expected property loss.
Data sources: EPA Safe Drinking Water Information System (SDWIS), FEMA National Flood Insurance Program, EPA radon zone maps, EIA electricity rates, and Consumer Confidence Reports. Last updated: 2026-08-31.
Frequently Asked Questions
What is the Home Purchase Risk Score?
This 0-100 area-level screening score combines the available source indicators listed in the methodology. It is not an estimate of hidden costs, a property defect, or an insurance premium.
What should homebuyers verify?
Request a water quality test, check service-line records with the utility, test for radon, inspect the property, and verify the current FEMA map designation for the exact address.
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