Every Areazine category corresponds to a specific official government data source — or, where a small composite is unavoidable, to a clearly labeled combination of named sources. This page lists what we cover, where it comes from, and how often it is refreshed. Categories fall into four broad families: recalls and product-safety bulletins issued by federal regulators; natural-hazard reports issued by federal scientific and emergency-management agencies; place-level statistical profiles assembled from the U.S. Census Bureau and the CDC; and equivalent international coverage for Canada, the United Kingdom, and Australia drawn from each country's national regulator.

Recalls and product-safety bulletins arrive from four federal sources. The Consumer Product Safety Commission publishes recalls for consumer products under its jurisdiction; the Food and Drug Administration publishes recalls for human and animal food, drugs, biologics, devices, and dietary supplements through the openFDA endpoint and the Recall Enterprise System; the National Highway Traffic Safety Administration publishes recalls for motor vehicles and equipment through the recalls API; and the FDA Drug Shortages database tracks active and resolved drug shortages reported under section 506E of the Federal Food, Drug, and Cosmetic Act. Each entry on Areazine keeps the source taxonomy intact — a CPSC Class I recall is shown as Class I; an FDA drug shortage marked "Currently in Shortage" is shown as such; an NHTSA campaign identifier is preserved verbatim so the reader can verify against the source.

Natural-hazard categories pull from NOAA and the National Weather Service for watches and warnings, the U.S. Geological Survey for earthquakes, the EPA AirNow program for air quality, and a composite of FEMA, NOAA, and USGS for the natural-disaster overview pages. Place-level categories use the U.S. Census Bureau American Community Survey five-year estimates as the demographic and economic backbone, CDC PLACES for small-area health indicators, and the FBI Uniform Crime Reporting program for state-level safety statistics. International coverage mirrors the U.S. structure: Health Canada and Environment and Climate Change Canada for Canada; the Food Standards Agency, the Met Office, and the British Geological Survey for the United Kingdom; the Australian Competition and Consumer Commission, the Bureau of Meteorology, and Geoscience Australia for Australia.