Water Quality Exchange (WQX)

The Water Quality Exchange (WQX) is the mechanism for data partners to submit water monitoring data to United States Environmental Protection Agency (USEPA). Click here for the EPA Water Quality Data web page and introduction to WQX.

The EQuIS WQX Schema is based on the Environmental Sampling, Analysis and Results (ESAR) data standard, which is USEPA's approved standard for sharing water, solid waste, and air quality data. It also uses other registries of common data, names, and data formats. The EQuIS WQX Schema file is available on the Downloads Dashboard of the EarthSoft Community Center (ECC) in the All Items >Products > Additional Resources > v7.0 folder.

Data can be uploaded to the EQuIS WQX Schema tables using the WQX and WQX-refvals formats. The files are available on the ECC Downloads Dashboard in the All Items >Products >Formats folder.

WQX materials are accessible at the following locations:

•WQX for EQuIS Module

•WQX Terminology and Concepts