U.S. EPA Enforcement and Compliance History Online (ECHO) - Clean Water Act (CWA) Rest Services API Technical Specs & Reference

U.S. EPA Enforcement and Compliance History Online (ECHO) - Clean Water Act (CWA) Rest Services 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. CWA Rest Services provides multiple service endpoints, each with specific capabilities, to search and retrieve data on facilities regulated under the Clean Water Act (CWA) and managed under the National Pollutant Discharge Elim…
Technical Specifications
| Attribute | Details |
|---|---|
| Provider | epa.gov |
| Current Version | 2019.10.15 |
| Format | OpenAPI / JSON |
Integration Information
Reference for version 2019.10.15.
Disclaimer: Data sourced from APIs.guru.
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Technical Specifications
| Attribute | Details |
|---|---|
| Provider | azure.com |
| Current Version | 2019-08-01 |
| Format | OpenAPI / JSON |
Integration Information
Reference for version 2019-08-01.
Disclaimer: Data sourced from APIs.guru.
API Technical Specs & Reference

API Overview
This document is intended as a detailed reference for the precise behavior of the drchrono API. If this is your first time using the API, start with our tutorial. If you are upgrading from a previous version, take a look at the changelog section.
Authorization
Initial authorization
There are three main steps in the OAuth 2.0 authentication workflow:
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Technical Specifications
| Attribute | Details |
|---|---|
| Provider | hubapi.com |
| Current Version | v1 |
| Format | OpenAPI / JSON |
Integration Information
Reference for version v1.
Disclaimer: Data sourced from APIs.guru.