U.S. EPA water quality standards information

An Internet repository of State and Tribal water quality standards is now available on EPA's website at:  http://www.epa.gov/ost/wqs  This new web site will enable any user to obtain the full text of water quality standards that are in effect under the Clean Water Act for each State and for each Tribe authorized to develop standards.

In addition, check out the Water Quality Standards Database, http://www.epa.gov/wqsdatabase,  which allows the user to view the designated uses of waterbodies in a structured way. Also, EPA's Watershed Assessment, Tracking and Environmental Results (WATERS) information system is available for a limited number of states on EPA's website at http://www.epa.gov/waters. WATERS enables users to connect and display important water quality information on maps in their geographic context.

U.S. EPA guidance and regulation

EPA's Guidance on Combined Sewer Overflows (CSOs) and Water Quality Standards published July 31, 2001 -- click here.

Here you'll find a fact sheet and an April 27, 2000 Federal Register notice on EPA's revised regulation that specifies when new and revised State and Tribal water quality standards take effect.

EPA's National Water Quality Inventory released June 28, 2000.  Click here for EPA's report.