Body Did you know that the South OC Watershed Management Area provides collaborative water resource management services in the watersheds of South Orange County, which encompass a large portion of the 496 square mile San Juan Hydrologic Unit? Check out the South OC WMA fact sheet for more information.

Body The County and cities of south Orange County are subject to a municipal separate storm sewer system permit (MS4 Permit) issued by the San Diego Regional Water Board (Water Board) which regulates the discharge of stormwater runoff from urbanized areas. On January 31, 2018, these municipalities collectively submitted to the...