Baldwin Park, CA Landscaping Rules: Rainwater Harvesting (2026)

Baldwin Park's landscape rules favor capturing and reusing on-site water. Zoning Code Section 153.160.200 (Stormwater Management and Rainwater Retention) encourages stormwater best management practices and design measures that minimize runoff and increase on-site rainwater retention and infiltration; Section 153.160.200.C requires planted areas to have friable soil to maximize water retention. Section 153.160.020.D provides a notable incentive: any lot under 2,500 square feet of landscape that meets its entire Estimated Total Water Use with treated or untreated graywater, or with stored rainwater captured on site, is subject only to Section 153.160.220.A.5 - effectively exempting it from the full water-efficiency package. Graywater systems are addressed in Section 153.160.192, which requires them to conform to the California Plumbing Code (Title 24, Part 5, Chapter 16) and any applicable city standards. Recycled-water irrigation systems must be designed and operated per all applicable local and state laws (Section 153.160.190). California statewide law also makes simple rain barrels and gravity graywater (laundry-to-landscape) systems permit-exempt; small rooftop rain-barrel capture does not require a city permit. Larger cisterns, pumped systems, or plumbing changes may require building/plumbing permits.