Retrospective coverage for October 22, 2026. First published October 26, 2026 06:07 -07:00 (Pacific time). This is an AI-assisted brief compiled from linked public source records; the coverage date is not the publication date.
San Diego County highlighted its network of Green Streets projects on Oct. 22, describing how landscaped and engineered features capture pollutants before runoff reaches waterways. The county reported 48 projects: 10 completed and 38 in planning, design or construction. County report
The systems use features such as vegetated channels, tree wells, permeable pavement and filtration basins to slow runoff and allow water to enter soil and planted areas. Some projects also include drainage and pedestrian improvements.
The county identified the Rainbow Water Quality Project as its largest completed example. About 3,400 feet of underground wetland channels filter runoff from nearly 345 acres in the Santa Margarita watershed, targeting nitrogen and phosphorus.
That project also included improvements along Huffstatler Street, Fifth Street and Rainbow Valley Boulevard: 500 feet of sidewalk, two accessible ramps and 27 rebuilt driveways.