Note: ****EPA no longer updates this information, but it may be useful as a reference or resource.****

This web site provides query access to over 200 million monitoring records originally reported to EPA via the Legacy STORET System.

Below are several options for accessing our database.  Please click on one of the icons in order to begin searching for information by the method that best suits your needs. Click here to access the Reference Tables for our database.

Try Our Mapping Software Start a simple query by selecting a state Search for Canadian data

Experienced STORET users can use the Advanced Query form Search by Hydrologic Unit Code (HUC) Locate contacts by organization

Download by STATE, ALL STORET Legacy DATA for each state, via a compressed self-extracting flat file(s) delimited by <tabs>.

Contact STORET Helpdesk via email:
Requesting STORET Legacy DATA flat files by STATE(s).

STORET Data Access

Local Navigation