Stormwater Regulations, Reports and Plans
County of San Diego's Watershed Protection Ordinance (Revised February 2016)
On May 8, 2013, the San Diego Regional Water Quality Control Board (Regional Board) adopted a new Municipal Stormwater Permit (National Pollution Discharge Elimination System Permit, No. R9-2013-0001) that covered the San Diego County Copermittees. Order No. R9-2015-0001 was adopted on February 11, 2015, amending the Regional MS4 Permit to extend coverage to the Orange County Copermittees. Order No. R9-2015-0100 was adopted on November 18, 2015, amending the Regional MS4 Permit to extend coverage to the Riverside County Copermittees and make minor revisions. This Permit mandates that the County of San Diego develop new and updated Runoff Management Plans and Programs, including Water Quality Improvement Plans and a Jurisdictional Runoff Management Program. These documents were submitted to the Regional Board on June 26, 2015. Permit requirements are generally implemented in the unincorporated County under authority of the Watershed Protection, Stormwater Management, and Discharge Control Ordinance (WPO).
The amended MS4 Permit, like all previous iterations, requires the County to establish and maintain adequate legal authority to implement all updated MS4 Permit provisions. The WPO has been amended to ensure that it is current with the minimum requirements of the recently amended MS4 Permit. The amendments include updating terminology and definitions related to land development priority development projects (PDPs), removal of outdated sections, minor updates to discharge prohibitions, and the incorporation of an optional program to allow development projects to satisfy some of its stormwater compliance obligations at off-site locations.
On January 27, 2016 the County Board of Supervisor’s adopted the Watershed Protection, Stormwater Management, and Discharge Control Ordinance (WPO). The WPO became effective February 26, 2016.
County of San Diego Watershed Protection, Stormwater Management, and Discharge Control Ordinance (Effective February 26, 2016)
Stormwater Permit -
Reports and Plans
If you would like to report a stormwater violation, have questions about our program or would like additional information call the County Stormwater hotline at:
or e-mail us at firstname.lastname@example.org
COUNTY OF SAN DIEGO
Department of Public Works
Watershed Protection Program
5510 Overland Ave., Suite 410, MS O326
San Diego, CA 92123, USA