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U.S. EPA Enforcement and Compliance History Online (ECHO) - Effluent Charting and Reporting API Technical Specs & Reference

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

U.S. EPA Enforcement and Compliance History Online (ECHO) - Effluent Charting and Reporting Logo

U.S. EPA Enforcement and Compliance History Online (ECHO) - Effluent Charting and Reporting 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. EFF Rest Services provides the data for ECHO’s Effluent Charts, a set of dynamic charts and tables of permitted effluent limits, releases, and violations over time for Clean Water Act (CWA) wastewater discharge permits issu…

Technical Specifications

AttributeDetails
Providerepa.gov
Current Version2019.10.15
FormatOpenAPI / JSON

Integration Information

Reference for version 2019.10.15.


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