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The Water Quality Exchange (WQX) is a database schema providing the framework for organizations to submit data to the EPA. The WQX Schema is based on the Environmental Sampling, Analysis and Results (ESAR) data standard, which is EPA's approved standard for sharing water, solid waste, and air quality data. It also uses other registries of common data, names, and data formats.

 

WQX materials are accessible at the following locations:

 

•WQX for EQuIS Module

•WQX Terminology and Concepts

 

Click here for the EPA WQX web page.