Vrnl aggregates data from 30 authoritative government and scientific sources to provide you with the most comprehensive environmental risk assessment available. We believe in transparency—here's exactly where our data comes from.
Hazardous waste and cleanup site locations from EPA NPL
Contaminated sites being cleaned up for redevelopment, tracked via EPA CIMC database
Industrial pollutant release tracking with carcinogen and PBT flags
Forever chemicals contamination monitoring in drinking water
Safe Drinking Water Information System - water quality violations
Six-Year Review of Drinking Water Standards — 43M+ lab-measured contaminant results from public water systems nationwide
Concentrated Animal Feeding Operations (CAFOs) and permitted agricultural facilities
County-level agricultural pesticide application data from USGS NAWQA (1992-2019)
Historical annual air quality measurements by county (PM2.5, Ozone)
Real-time air quality index (AQI) data
County-level light pollution estimates derived from population density, mapped to the Bortle dark-sky scale (1-9)
Asbestos, chrysotile, and legacy contamination mine sites
Landfills, power plants, and other regulated facilities
Sewage and wastewater treatment facilities with potential odor impacts
Stone, gravel, and sand quarries with noise, dust, and traffic impacts
Correctional facilities with potential property value and community impacts
Active and intermittent mine locations (coal, metal, stone, sand/gravel)
Airport locations with hub-size categorization for noise assessment
Railroad crossing locations for noise and safety assessment
Stadiums and sports venues for event noise assessment
Schools for daytime activity noise assessment
Concert halls and event venues for periodic noise assessment
Shooting ranges for high-impact noise assessment
Motor racetracks and speedways for high-impact noise assessment
Highway proximity detection for noise impact scoring
Coal, nuclear, natural gas, and petroleum power generation facilities
Real-time weather alerts and severe weather events
Historical federal disaster declaration data (20+ years)
Official flood zone designations from the National Flood Hazard Layer
Historical seismic activity data (20+ years, M3.0+)
Active volcano monitoring and threat assessments for US volcanoes
Our data is synced regularly with source agencies. Environmental and infrastructure data is typically updated weekly or as new releases become available from federal agencies. Weather data is refreshed in near real-time where available. Each report includes data vintage information for full transparency.