Rainwater Harvesting: Irvine vs Mission Viejo
How do rainwater harvesting rules compare between Irvine, CA and Mission Viejo, CA?
Irvine and Mission Viejo have similar restriction levels.
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 →Mission Viejo, CA
Orange County
The 2012 Rainwater Capture Act allows California residents to capture rainwater from rooftops for non-potable outdoor use without a state water-right permit, preempting most local barriers.
View full Mission Viejo rules →Key Facts Comparison
| Fact | Irvine | Mission Viejo |
|---|---|---|
| Legality | Legal — encouraged | - |
| Permit Required | No (standard rain barrels) | - |
| State Law | Water Code §10574 | - |
| Approved Use | Landscape irrigation | - |
| Rebates | Check with IRWD | - |
| Statute | - | Water Code 10573 |
| Permit needed | - | No for rooftop barrels |
| Use | - | Non-potable outdoor only |
| Code reference | - | Title 24 Part 5 Ch 17 |
Highlighted rows indicate differences between cities.
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.
Mission Viejo FAQ
Do I need a state water right to collect rain?
No. The Rainwater Capture Act exempts rooftop rainwater collected on the property where it falls from the appropriative water rights system.
Can a city ban rain barrels entirely?
No. State law authorizes residential rooftop capture, though cities may regulate large cisterns, plumbing connections, and structural permits.
Compare other topics
See how Irvine and Mission Viejo compare on other ordinance categories.
Want to add a third city?
Use our full comparison tool to compare up to three cities.
Open Comparison Tool