About EnvRisk
EnvRisk provides free environmental risk assessments for any US location. We aggregate data from 8 authoritative government sources into a single, easy-to-understand risk score from 0 (safe) to 100 (extreme risk).
Our scoring algorithm weighs multiple factors including natural hazard risk (FEMA NRI), current weather alerts, air quality, nearby hazardous facilities, and real-time water conditions.
Data Sources
FEMA National Risk Index
County-level risk scores for 18 natural hazards including flood, earthquake, wildfire, hurricane, tornado, and lightning. Based on expected annual losses, social vulnerability, and community resilience.
https://www.fema.gov/flood-maps/products-tools/national-risk-index ↗USGS Earthquake Hazards Program
Real-time earthquake data from the USGS seismic network. Provides magnitude, location, and time of recent seismic events.
https://earthquake.usgs.gov/ ↗EPA ECHO Air Quality Facilities
Facility-level data from EPA's Enforcement and Compliance History Online system for Clean Air Act regulated sites.
https://www.epa.gov/echo ↗EPA ECHO RCRA Hazardous Waste
Data on hazardous waste facilities regulated under the Resource Conservation and Recovery Act (RCRA).
https://www.epa.gov/echo ↗EPA ECHO Clean Water Act
Discharge permit data for facilities regulated under the Clean Water Act National Pollutant Discharge Elimination System (NPDES).
https://www.epa.gov/echo ↗National Weather Service Alerts
Real-time weather alerts including tornado warnings, flood watches, winter storm warnings, and severe thunderstorm alerts.
https://www.weather.gov/ ↗USGS Water Monitoring
Real-time stream and river gauge data including water level (gage height) and discharge measurements from USGS monitoring stations.
https://waterdata.usgs.gov/ ↗EPA AirNow
Real-time Air Quality Index (AQI) readings from EPA's AirNow network, covering PM2.5 and ozone levels.
https://www.airnow.gov/ ↗⚠️ Disclaimer
EnvRisk is for informational purposes only. Our scores are estimates based on publicly available government data and should not be used as the sole basis for decisions about property purchases, insurance, or safety. Always consult with qualified professionals for official risk assessments.