![[logo] US EPA](http://www.epa.gov/epafiles/images/logo_epaseal.gif){kind=logo}
Database
Disclaimer
Most of the data in this database is from EPA's legacy STOrage and RETrival (STORET) data system, a database containing information from many state and federal agencies. EPA incorporated Legacy STORET data that were considered relevant into the database and removed duplicate data. The accuracy of the data is a function of the quality assurance / quality control procedures used by the data originators. EPA checked with the data originators to determine the overall reliability of the data (e.g., which analytical methods and sampling techniques were used to gather data). The data contained in the database do not constitute EPA's recommendations for nutrient criteria but have been used as a basis for developing EPA ecoregional nutrient criteria. If any of the data contained in the database appears to be inaccurate or of questionable quality, please contact Ost.Comments@epa.gov to initiate data correction.
The National Nutrient Database (NUTDB) serves as an information resource for EPA numeric nutrient criteria recommendations to states, tribes, and others in establishing scientifically defensible numeric nutrient criteria. Fact sheet about the database (September 2001).
The NUTDB provides access to the datasets to support numeric nutrient criteria development efforts. The datasets are now available as Zipped Comma Separate Value (CSV) files. These files can be accessed by State/Waterbody Type or by Ecoregion/Waterbody Type. Use the Download Tool below to find your zip files of interest.Download Tool
You can download nutrient information either by state or ecoregion. Once you select a state or ecoregion, the query engine will return a screen with a list of files available for download. Definitions of the fields are available.