Envirofacts Data & Developer Services

Access Envirofacts data programmatically using EPA’s APIs, metadata tools, and technical documentation. This page serves as a starting point for developers, researchers, and analysts to explore Envirofacts web services, data models, metadata, update schedules, and download options.

About the Data

• Visit the About the Data page to learn more about the environmental data that powers Envirofacts. This page describes EPA data sources, how information is collected and standardized, and the quality and indexing methods applied.

API & Web Service Documentation

• Envirofacts Web Services – Central documentation hub for Envirofacts APIs, including REST and SOAP services, request structure, output formats, examples, and links to program-specific APIs and tools.

Data Downloads

• Visit the Envirofacts Data Download page to access options for retrieving EPA data in multiple formats. Users can build custom searches, download results to a file, or use geospatial download tools for mapping and analysis.

Data Models and Metadata

• View the Envirofacts data model and system metadata – Explore database diagrams, system descriptions, and table-level relationships across Envirofacts programs.
• Search Envirofacts data element metadata – Find field names, definitions, and related database tables by program, with options to search tables, columns, or both.

Data Updates

• View the Envirofacts data refresh schedule and update history – See when datasets were last updated and review historical changes across Envirofacts systems.