U.S. EPA Enforcement and Compliance History Online (ECHO) - Clean Air Act

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 r

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.

Air Rest Services provides multiple service endpoints, each with specific capabilities, to search and retrieve data on facilities regulated under the Clean Air Act (CAA). The returned results reflect data drawn from EPA's ICIS-Air database.

The get_facilities, get_map, get_qid, and get_download end points are meant to be used together, while the enhanced get_facility_info end point is self contained.
The get_facility_info end point returns either an array of state, county or zip clusters with summary statistics per cluster or an array of facilities.

The recommended use scenario for get_facilities, get_qid, get_map, and get_downoad is:

<b>1)</b>  Use get_facilities to validate passed query parameters, obtain summary statistics and to obtain a query_id (QID).  QIDs are time sensitive and will be valid for approximately 30 minutes.
<b>2)</b>  Use get_qid, with the returned QID, to paginate through arrays of facili