Santa Ana Storm Water Program

The Santa Ana Stormwater Program was established to comply with the requirements home.jpgof the National Pollutant Discharge Elimination System (NPDES) Municipal Separate Storm Sewer System (MS4) Permit. The NPDES Permit is issued by the Santa Ana Regional Water Quality Control Board and requires the City to implement various inspection programs, participate in public education and outreach activities, maintain the City’s storm drain system, clean up pollutant spills, and enforce the City’s Water Quality Ordinance. The goal of the NPDES Permit is to reduce pollutants discharged in urban runoff and to protect water quality standards in receiving waters. Public Works Agency staff are dedicated to improving water quality and the environment for Santa Ana residents!

Did you know that the City’s storm drain system is separate from the sewer system and stormwater flows untreated out to the ocean? When it rains, stormwater can convey pollutants such as trash, oil, bacteria, and sediment through the City’s storm drain system, into our local creeks and rivers, and out to the ocean. These pollutants are harmful to wildlife and the environment. Do your part to protect the environment and improve water quality by following the tips below:

  • Always use a drip pan when performing vehicle maintenance to stop any automotive fluids from spilling onto your driveway, the street, or into the gutter. If you notice your vehicle is leaking fluids, fix it as soon as possible and clean up any leaks
  • Clean up pet waste and dispose of it in the trash
  • Check to make sure you are not over-irrigating your landscape and water is not flowing into the gutter
  • Take your car to the car wash! Car washes typically recycle their water and soapy water should not enter the City’s storm drain system. If you do wash your car at home, use minimal water and biodegradable soap. Do not allow wash water to enter the street or gutter and instead direct it towards a landscaped area where it can absorb into the ground
  • Keep trash can lids closed to avoid litter being blown into the street or gutter
  • Sweep up landscape debris and put it in the appropriate bin for disposal
  • Always follow directions on pesticide labels and never use more than specified. Avoid applying pesticides prior to rain events
  • Avoid painting or applying roof sealants prior to rain events
  • Do not hose down or pressure wash sidewalks, driveways, or walkways. Instead, use dry cleanup methods such as a broom, or use minimal water and a mop. Do not allow wash water to flow into the street or gutter
  • Take unwanted household hazardous wastes such as paint, oil, pesticides, cleaners, and used batteries to one of Orange County’s free disposal facilities. Visit for more information
  • Report illegal dumping and pollutant spills to the City’s Public Works Agency by calling (714) 647-3380 or downloading the mySantaAna mobile application

To learn more, please explore the Additional Information section on the left side of this page.