Note: This information is provided for reference purposes only. Although the information provided here was accurate and current when first created, it is now outdated.
This web site provides query access to over 200 million monitoring records originally reported to EPA via the Legacy STORET System.
From this site you will be able to access a database that holds over 200 million water sample observations from about 700,000 sampling sites for both surface and ground water.
This web site allows both scientists and the general public to access the historical data from the legacy STORET system. First-time users should narrow their search based on the options from the Query page, while experienced users may jump to the no-frills Advanced Query form for requesting data.
Background information about the Office of Water and the history of STORET may be found by following the Purpose link. For more information on the layout of this site, please follow the Site Map link.