Rainwater Harvesting: Costa Mesa vs Irvine
How do rainwater harvesting rules compare between Costa Mesa, CA and Irvine, CA?
Costa Mesa and Irvine have similar restriction levels.
Costa Mesa, CA
Orange County
California law encourages rainwater harvesting, and Costa Mesa permits residents to collect and store rainwater for irrigation and non-potable uses without a permit for systems under 5,000 gallons. Rebates may be available through Mesa Water District.
View full Costa Mesa rules →Irvine, CA
Orange County
Rainwater harvesting is legal and encouraged in Irvine under California Water Code Section 10574 (Rainwater Capture Act of 2012). Rain barrels do not require city permits for standard residential installations.
View full Irvine rules →Key Facts Comparison
| Fact | Costa Mesa | Irvine |
|---|---|---|
| State Law | AB 1750 Rainwater Capture Act | Water Code §10574 |
| No Permit Needed | Systems under 5,000 gallons | - |
| Use | Irrigation and non-potable only | - |
| Mosquito Prevention | Containers must be covered | - |
| Rebates | Check Mesa Water District | Check with IRWD |
| Legality | - | Legal — encouraged |
| Permit Required | - | No (standard rain barrels) |
| Approved Use | - | Landscape irrigation |
Highlighted rows indicate differences between cities.
Costa Mesa FAQ
Is it legal to collect rainwater in Costa Mesa?
Yes. California's Rainwater Capture Act of 2012 allows residential rainwater collection without permits for systems under 5,000 gallons.
Are there rebates for rain barrels in Costa Mesa?
The Mesa Water District and Orange County Water District may offer rebates. Check their websites for current programs and eligibility.
Can I drink collected rainwater in Costa Mesa?
No, not without proper treatment and permitting. Residential rainwater harvesting is intended for irrigation and non-potable outdoor uses.
Irvine FAQ
Can I collect rainwater in Irvine?
Yes. Rainwater harvesting is legal and encouraged under state law. Standard rain barrels for landscape irrigation do not require a city permit.
Are there rebates for rain barrels in Irvine?
Check with the Irvine Ranch Water District for current rebate programs on rainwater capture systems.
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