Rainwater Harvesting: Ojai vs Simi Valley
How do rainwater harvesting rules compare between Ojai, CA and Simi Valley, CA?
Ojai and Simi Valley have similar restriction levels.
Ojai, CA
Ventura County
Ojai enthusiastically supports rainwater harvesting as a supplement to the Casitas Municipal Water District supply. Many residents already use rain barrels and cisterns for landscape irrigation.
View full Ojai rules βSimi Valley, CA
Ventura County
Rainwater harvesting is legal and encouraged in unincorporated Ventura County under California Water Code Section 10574. No permit is required for residential rain barrels, and the county's watershed protection programs support stormwater capture.
View full Simi Valley rules βKey Facts Comparison
| Fact | Ojai | Simi Valley |
|---|---|---|
| - | - | |
| Permit Required | - | No for standard rain barrels |
| Large Systems | - | Building permit for >5,000 gallons |
| Legal Authority | - | CA Water Code Section 10574 |
| Mosquito Prevention | - | Covered/screened containers required |
| Watershed District | - | (805) 654-2001 |
Highlighted rows indicate differences between cities.
Ojai FAQ
Is rainwater harvesting popular in Ojai?
Yes, very. Many Ojai residents collect rainwater for landscape irrigation. The practice is legal under AB 1750 and supported by the community's environmental ethic.
Does Casitas MWD offer rain barrel rebates?
Check with Casitas Municipal Water District for current rebate programs. Some water agencies offer free or discounted rain barrels at community events.
Do I need to account for Thomas Fire burn scar runoff?
If your property is in or near a burn scar area, increased runoff intensity may require larger collection systems or overflow management. Consult a professional for properties affected by the Thomas Fire.
Simi Valley FAQ
Is rainwater harvesting legal in Ventura County?
Yes. California Water Code Section 10574 explicitly authorizes collecting rainwater from rooftop surfaces. No permit is needed for standard residential rain barrels in unincorporated Ventura County.
Do I need a permit for a rain barrel?
Standard residential rain barrels do not require permits. Larger cistern systems exceeding 5,000 gallons may require a building permit to ensure structural safety and proper installation.
What can I use collected rainwater for?
Captured rainwater may be used for landscape irrigation, garden watering, car washing, and other non-potable outdoor uses. Using rainwater for indoor potable purposes requires treatment systems and health department approval.
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