San Leandro, CA Landscaping Rules: Rainwater Harvesting (2026)
Key Facts
- Residential permit required
- No (barrels <360 gal, outdoor use)
- State authority
- Public Resources Code 10574
- Plumbing code
- 2022 CPC Chapter 16
- C.3 threshold
- 2,500 sq ft impervious
- EBMUD rain barrel rebate
- Up to $400
- Stormwater code
- SLMC Chapter 3-15
Summary
California allows rooftop rainwater capture for irrigation and approved non-potable uses without a permit, and San Leandro encourages on-site retention through the Alameda Countywide Clean Water Program's C.3 stormwater requirements. EBMUD also offers rain barrel rebates.
This bill would enact the Rainwater Capture Act of 2012, which would provide that use of rainwater collected from rooftops does not require a water right permit from the state board. (2) Existing law, the Contractors’ State License Law, creates the Contractors’ State License Board within the Department of Consumer Affairs and provides for the licensing and regulation of contractors. Existing law authorizes a landscape contractor working within the classification of his or her license to enter into a prime contract for the construction of a swimming pool, spa, or hot tub, an outdoor cooking center, or an outdoor fireplace, if certain conditions are met.
Full Breakdown
There is no San Leandro municipal ordinance restricting residential rainwater harvesting. 13 and the 2022 California Plumbing Code, Chapter 16 (effective Jan. 1, 2023) authorize rainwater catchment from rooftops for outdoor irrigation and certain non-potable indoor uses; barrels under 360 gallons and used for outdoor purposes do not require a plumbing permit. Public Resources Code Section 10574 (Rainwater Capture Act of 2012) confirms a landowner's right to capture rainwater on their parcel without a State Water Resources Control Board appropriative water right. 3 of the Alameda Countywide Clean Water Program: development projects creating or replacing 2,500+ sq ft of impervious surface must include Low Impact Development (LID) measures - bioretention, rainwater harvesting, or infiltration - sized to capture the 80% storm volume (Stormwater Requirements Checklist, City of San Leandro). EBMUD offers up to $400 in residential rebates for rain barrels and cisterns through its WaterSmart program.
Violations & Fines
Rainwater harvesting by residents is not a violation. Failure to install required C.3 stormwater LID measures on qualifying development projects can result in plan-check denial, stop-work orders, and administrative penalties under SLMC Chapter 3-15 (Storm Water Management and Discharge Control). Illicit discharges to the storm drain system can be cited under SLMC 3-15 with penalties consistent with the Clean Water Act ($1,000-$10,000 per day).
Frequently Asked Questions
Do I need a permit to install a 55-gallon rain barrel?
Are there rebates for rain barrels in San Leandro?
Does my new home addition trigger stormwater requirements?
Sources & Official References
Other rules in San Leandro
California rules heatmap·Compare San Leandro to another location·View the California landscaping rules overview
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Rainwater Harvesting in Nearby Cities
How other cities in Alameda County handle rainwater harvesting.