ZipCheckup is a free public data platform that aggregates 50+ federal environmental and safety datasets at the ZIP code level, helping homeowners, renters, researchers, and local governments understand the safety conditions of any address in the United States.
17 safety verticals: water quality, air quality, radon risk, PFAS contamination, lead exposure, flood hazard, wildfire risk, earthquake risk, extreme heat, and more.
Features:
42,000+ ZIP codes covered
277,000+ structured pages
28 interactive data tools
Public REST API (api.zipcheckup.com/v1/)
npm packages: us-water-quality-data, zipcheckup
PyPI: us-water-quality-data
Open dataset under CC BY 4.0
No account required. No subscription. Free for everyone.
