Envirofacts Data & Developer Services
Access Envirofacts data programmatically using EPS's APIs, metadata tools, and documentation. This page provides a single entry point for developers, researchers, and analysts to explore data models, search metadata, view data refresh schedules, and access REST and SOAP services.
About the Data
- Visit the About the Data page to learn more about the data that powers Envirofacts. It describes EPA's environmental data sources, how the information is collected and standardized, and the quality and indexing methods applied. This context supports developers, researchers, and the public in making effective use of Envirofacts tools, APIs, and downloads.
Data Models and Metadata
- View the Envirofacts data model and system metadata - Explore database diagrams, descriptions, and API query options.
- Search Envirofacts data element metadata - Find field names, definitions, and related database tables by program, with options to search tables and columns, columns only, or tables only.
Data Updates
- View the Envirofacts data refresh schedule and update history - See when datasets were last updated and review past changes across all Envirofacts systems.
Data Downloads
- Visit the Envirofacts Data Download page to access options for retrieving EPA data in multiple formats. Users can build custom searches and download results to a file, or use the geospatial download feature to obtain spatial data for mapping and reporting applications. Additional search tools and datasets are also available.
Web Services & API Documentation
- Read the comprehensive Envirofacts web services documentation - Learn how to use REST and SOAP APIs, including request parameters, output formats, and example queries.
- Browse the Envirofacts REST API viewer - Explore available system-level and sub-system API endpoints, with details on accepted parameters and sample output.
- View Envirofacts API access statistics by year, month, and program - Includes total requests counts and program-level usage.