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Water Quality Data


Water Quality Portal

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The Water Quality Portal (WQP) is a cooperative service sponsored by the United States Geological Survey (USGS), the Environmental Protection Agency (EPA) and the National Water Quality Monitoring Council (NWQMC) that integrates publicly available water quality data from the USGS National Water Information System (NWIS) the EPA STOrage and RETrieval (STORET) Data Warehouse, and the USDA ARS Sustaining The Earth’s Watersheds - Agricultural Research Database System (STEWARDS). More here...


Water Quality Data Elements

The Methods and Data Comparability Board and the National Water Quality Monitoring Council (NWQMC) have developed sets of data elements which they believe are the minimum elements necessary to facilitate the exchange of chemical, microbiological, population/community (ecological and bioassessment), and (eco)toxicological assessment data. These elements were approved by the Advisory Committee on Water Information (ACWI). The guide lists these data elements as modules in a framework that addresses who, where, when, why, and how data are collected. Several modules of elements are common to all types of water quality data (e.g., contact information, where samples are collected), while other modules contain somewhat different data elements depending on the type of analyte (e.g., how samples were collected, result type).

The data elements lists are not a set of required information; rather, they are recommended as a means to help data collectors more easily consider the most important WQDE needed to assess data comparability. Use of these data elements will help ensure that information collected and reported by various organizations will increase in value to other agencies and the public.

The Water Quality Data Elements User Guide is now available in PDF format to download and print.