Stormwater Coordinator - Ann Gillespie

Stormwater pollution is caused when stormwater runs off of streets, parking lots, sidewalks, or disturbed areas and picks up pollutants such as sediment, oils, or chemicals. These pollutants are transported into the storm sewer system and directly into our lakes, streams, and the ocean.

Learn how you can help prevent stormwater pollution by visiting the Prevent Stormwater Pollution Poster.

Most people are surprised to learn that stormwater is a leading cause of water pollution across the nation. Most stormwater is NOT treated before it enters the creeks or ocean; whatever material the water collects as it runs off the streets, parking lots, your property, or construction site, and ends up in the creek or ocean.

The U.S. Environmental Protection Agency requires that the County implement a Stormwater Management Program (Stormwater Program). Locally, the Central Coast Regional Water Quality Control Board (Central Coast Water Board) oversees the County’s Stormwater Program that details how the County is protecting the water quality of the creeks and ocean from polluted stormwater runoff.

Residential Information

  1. EPA Homeowners Guide
  2. Proper Disposal of Household Hazardous Waste
  3. Disposal of Motor Oil
  4. Septic System Maintenance
  5. Car Wash Brochure


  1. UC Master Gardeners
  2. Our Water - Our World
  3. Landscape Water Efficiency

Pet Waste Management

  1. SLO Scoops Poop
  2. Pet Waste Brochure
  3. Equine Waste Brochure
  4. Toxoplasma Gondii

Commercial and Industrial Business

  1. Business Waste Reduction
  2. Hazardous Waste and Recycling
  3. Disposal of Motor Oil
  4. Car Wash Brochure
  5. Power Wash Brochure
  6. Pollution Prevention Makes Good Business Sense
  7. Special Consideration for Auto Service Businesses
  8. Special Consideration for Autorecycling Businesses
  9. Special Considerations for Restaurants

Low Impact Development

  1. SLO County Post-Construction Stormwater Requirements
  2. Post-Construction Stormwater Requirements
  3. Low Impact Development Brochure
  4. How Urbanization Affects the Water Cycle
  5. Urban Runoff and Impervious Land Cover
  6. EPA Low Impact Development Guidelines
  7. Central Coast Low Impact Development Initiative

Related Services

Stormwater Pollution Reporting Hotline

Contact Public Works via web form, email, or call us at (805) 781-5252.