California law permits rainwater harvesting statewide under AB 1750 (Water Code 10574). Anaheim encourages water conservation measures and rainwater collection can help meet landscape water efficiency requirements.
California Water Code Section 10574 (AB 1750) explicitly permits rainwater capture and use for residential and commercial purposes. Anaheim supports water conservation through its Landscape Water Efficiency Ordinance (AMC 10.19) and general water conservation programs. Rainwater barrels and cisterns do not require a permit in most cases for residential use. Captured rainwater can be used for landscape irrigation, reducing reliance on potable water. Larger rainwater harvesting systems may require building permits if they involve structural modifications. Water captured from rooftop runoff is generally considered safe for landscape use but should not be used for potable purposes without treatment. The city's stormwater program benefits from on-site rainwater retention that reduces runoff to the storm drain system.
No penalties for residential rainwater harvesting. Large systems without required permits: building code violation. Water ponding creating mosquito habitat: vector control complaint.
Anaheim, CA
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Side-by-side rule comparisons with other cities in Orange County.
See how other cities in Orange County handle rainwater harvesting.
See how Anaheim's rainwater harvesting rules stack up against other locations.
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