Stormwater Permits

Orange County is located within two California Regional Water Quality Control Board jurisdictions.

The Santa Ana Regional Water Quality Control Board

The San Diego Regional Water Quality Control Board

The County of Orange, the Orange County Flood Control District (OCFCD), and the 34 cities of Orange County (collectively referred to as Co-Permittees) comply with two municipal stormwater permits. North Orange County (north of El Toro Road) is issued a permit by the Santa Ana Regional Water Quality Control Board, and South Orange County (south of El Toro Road) is issued a permit by the San Diego Regional Water Quality Control Board. Both permits can be viewed using the links below.

Click here for the North Orange County Municipal Stormwater Permit

Click here for the South Orange County Municipal Stormwater Permit

In compliance with the municipal stormwater permits, the County of Orange, OCFCD, and the 34 cities submit annual reports to the Regional Water Quality Control Boards. To view the summary of North Orange County efforts, read previous annual reports here. To view the summary of South Orange County efforts, read previous annual reports here.