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NPDES General Permit Web Inventory - Addition of Stormwater General Permits

May 29, 2013

NPDES General Permit Web Inventory - Addition of Stormwater General Permits

Under the Clean Water Act Action Plan (October 15, 2009), OECA and OWM committed to creating a website that features a national web-based inventory for all non-stormwater NPDES general permits issued by states and the Agency. The web inventory went live in September 2012 and has now been updated to include stormwater general permits. The non-stormwater portion has also been updated with data current as of March 2013.

The web inventory can be accessed using the following link:

The web inventory includes 767 non-stormwater and stormwater general permits and is designed with a search tool to provide easily accessible information on master general permits, such as: permit category, permit number, state, permit title, EPA Region, issuance and expiration dates, estimated number of facilities covered by each master general permit, and permitting authority. Where a general permit is available on a state website, the web inventory provides a link so that the specific terms of the general permit can be easily viewed.

If you have any questions or comments, please contact Jackie Clark (


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