Attention all SRS Users: The SRS application has migrated to the Agency Azure cloud environment and the URL to access the application has changed. The new SRS URL is: Please update your bookmarks accordingly. For any questions or concerns please use the SoR Contact Us form.

System Of Registries

The System of Registries (SoR) is a resource for environmental system developers and enterprise architects. It also provides environmental program managers and users of environmental information with automated services to enable better understanding of environmental terminology and data used by the Agency.

Data standards are an integral part of these services. Information about data standards may be accessed on the separate Data Standards Web Site.


Registry of EPA Applications, Models and Data Warehouses
  • Information Systems
  • Environmental Models


Environmental Dataset Gateway
  • Datasets
  • Mapping Tools
  • Live Maps


Facility Registry Services
  • Facilities
  • Locational Information


Substance Registry Services
  • Chemicals
  • Biological Organisms


Terminology Services
  • Terms, Acronyms and Definitions
  • Glossaries
  • Taxonomies


Tribal Identification Services
  • Federally-recognized Tribe Names and Identifiers


Laws and Regulations Services
  • Environmental Laws
  • Regulations
  • Programs