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Stormwater Program (Water Quality)

The Orange County Stormwater Program was initiated in 1990 as a cooperative local government response to the 1987 Amendment to the Federal Clean Water Act (CWA). This Amendment extended the provisions of the CWA Section 402 National Pollutant Discharge Elimination System (NPDES), issuing a permit to the municipal storm drain system operators, also known as the Municipal Separate Storm Sewer Systems (MS4s), thereby making local governments responsible for the quality of their stormwater discharges.

In California, these stormwater programs are administered by the State Water Resources Control Board (SWRCB) and nine regional boards that issue NPDES-MS4 permits and enforce regulations within their respective regions. South Orange County lies within the jurisdiction of the San Diego Regional Water Quality Control Board (SDRWQCB). This regional board issued the first municipal NPDES-MS4 permit in 1990 for the "Orange County Stormwater Program", a partnership between the County and South Orange County cities, including the City of Rancho Santa Margarita. NPDES-MS4 permits are issued for a five-year term with the current Fourth Term Permit issued on December 16, 2009.

In compliance with the NPDES-MS4 Permit, the City of Rancho Santa Margarita has developed a comprehensive Stormwater Program that exemplifies the high value that is placed on clean water and improving water quality. This program includes a Local Implementation Plan (LIP) that regulates urban water runoff in and around the City.

For additional information on the City's Stormwater Program, please contact the Public Works Department at 949.635.1800 extension 6501.

Program Resources 
 - To report chemical and hazardous materials spill, please call 911. 
 - To report water pollution, please contact the County of Orange hotline at 877.897.7455.
 - For mosquito and rodent issues, please contact the Orange County Vector Control at 714.971.2421.

To recycle used oil and filters please contact the following locations: 
Econo Lube N'Tune and Brakes
21562 Plano Trabuco Road
Rancho Santa Margarita, CA 92679 
Jiffy Lube #1598
23041 Antonia Parkway
Rancho Santa Margarita, CA 92688 
Santa Margarita Ford
30031 Santa Margarita Pkwy
Rancho Santa Margarita , CA 92688
Toyota Rancho Santa Margarita
22722 Avenida Empresa
Rancho Santa Margarita, CA 92688
Santa Margarita Ford Fleet Center
29922 Avenida De Las Banderas
Rancho Santa Margarita, CA 92688

Learn more on how to do your part to protect our precious water by using the Orange County Watershed/Public Education site at  http://www.ocwatershed.com/publiced/
Development and Redevelopment Projects
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 Technical Guidance Document (TGD) - Orange County TGD 
 Technical Guidance Document (TGD) - South Orange County TGD Guidance Memo 
 Technical Guidance Document (TGD) - Worksheets from TGD 
 Water Quality Management Plan (WQMP) - Checklist 
 Water Quality Management Plan (WQMP) - South Orange County Model WQMP 
 Water Quality Management Plan (WQMP) Template 
Best Management Practices for Mobile Businesses
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Best Management Practices for Pollution Prevention
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 Animal Handling Areas 
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 Best Management Practices for Construction Sites & Home Remodeling 
Homeowner's Association
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 Annual NPDES Activities Report for HOAs 
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 Best Management Practices for MOBILE DETAILERS - English Version 
 Best Management Practices MOBILE DETAILERS - Spanish Version 
 Building Maintenance 
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 Requirements for Public Events 
 Spill Prevention and Cleanup 
 Vehicle and Equipment Fueling 
 Vehicle and Equipment Maintenance and Repair 
 Vehicle and Equipment Wash and Steam 
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Orange County Construction Runoff Guidance Manual
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 Development and Redevelopment Projects - Orange County Construction Runoff Guidance Manual 
Protecting our Watershed
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 Living In and Protecting San Juan Creek Watershed 
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