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U.S. EPA Enforcement and Compliance History Online (ECHO) - All Data API Technical Specs & Reference

Detailed technical specifications for U.S. EPA Enforcement and Compliance History Online (ECHO) - All Data API including version 2019.10.15 data.
📅 Last updated: April 20, 2026

U.S. EPA Enforcement and Compliance History Online (ECHO) - All Data Logo

U.S. EPA Enforcement and Compliance History Online (ECHO) - All Data API Overview

Enforcement and Compliance History Online (ECHO) is a tool developed and maintained by EPA’s Office of Enforcement and Compliance Assurance for public use. ECHO provides integrated compliance and enforcement information for over 1 million regulated facilities nationwide. ECHO Rest Services provide multiple service endpoints, each with specific capabilities, to search and retrieve data on facilities regulated as Clean Air Act (CAA) stationary sources, Clean Water Act (CWA) dischargers, Resour…

Technical Specifications

AttributeDetails
Providerepa.gov
Current Version2019.10.15
FormatOpenAPI / JSON

Integration Information

Reference for version 2019.10.15.


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