Los Coches Road Dry Weather Diversion Pilot Project

Trash Capture and Water Reuse Project | Completed Fall 2024

Located entirely underground, this project removes trash from stormwater and sends dry weather runoff to be cleaned into potable water.

Stormwater flows through a trash capture system before being returned to the storm drain system. Dry weather runoff (water not from storm events) is diverted for treatment and potable reuse.

Project Details

This project is located in the San Diego River Watershed.

The San Diego River Watershed is affected by bacteria. Learn more on Project Clean Water.

1.3 million gallons of water added to the local water supply each year

This project captures and diverts water runoff to the East County Advanced Water Purification Project, which treats water to drinking standards for reuse.

139 gallons of trash removed annually

An underground trash capture device removes trasah and debris from runoff, discharging cleaner water back into the storm drain system.

Project Photos

East-facing aerial view of the intersection of Los Coches Rd and Ha Hana Rd.

Bird's eye view of the intersection of Los Coches Rd and Ha Hana Rd.

This project won the 2025 APWA San Diego & Imperial Counties Chapter Project of the Year in the Environment Category.

Learn about our other Green Infrastructure Projects

The County of San Diego is proud to implement projects like this to improve water quality, support sustainability, and enhance our local communities.

Visit our Watershed Protection Program Home Page