Rainwater Harvesting: Castro Valley vs San Leandro
How do rainwater harvesting rules compare between Castro Valley, CA and San Leandro, CA?
Castro Valley and San Leandro have similar restriction levels.
Castro Valley, CA
Alameda County
Rainwater harvesting is legal and encouraged in Alameda County under CA Rainwater Capture Act of 2012 (AB 1750). Rain barrels under 5,000 gallons for landscape irrigation generally need no permit.
View full Castro Valley rules →San Leandro, CA
Alameda County
Rainwater harvesting is legal and encouraged in San Leandro. Rain barrels under 5,000 gallons require no permit. EBMUD offers rebates for qualifying systems.
View full San Leandro rules →Key Facts Comparison
| Fact | Castro Valley | San Leandro |
|---|---|---|
| State authorization | AB 1750 (2012) | - |
| Permit-free | Under 5,000 gallons surface | - |
| Large systems | Plumbing permit required | - |
| Rebates | EBMUD, ACWD offer | - |
| Use | Non-potable landscape | - |
| Legal | - | Yes (AB 1750) |
| Permit Trigger | - | Over 5,000 gal |
| Rebate | - | EBMUD WaterSmart |
| Mosquitoes | - | Must be sealed |
| Potable Use | - | Plumbing review |
Highlighted rows indicate differences between cities.
Castro Valley FAQ
Can I drink harvested rainwater?
Not without extensive treatment and permitting; rainwater harvesting in California is generally limited to non-potable uses like irrigation and toilet flushing.
Are rebates available?
Yes, both EBMUD and ACWD periodically offer rebates on rain barrels and larger cisterns; check their conservation pages for current programs.
San Leandro FAQ
Can I put a rain barrel on my San Leandro house?
Yes. Rain barrels up to 5,000 gallons used outdoors need no permit, and EBMUD offers rebates on approved models.
Who enforces this in San Leandro?
San Leandro code enforcement at (510) 577-3394 handles most complaints. Alameda County agencies handle regional issues.
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