Rainwater Harvesting: Moorpark vs Simi Valley
How do rainwater harvesting rules compare between Moorpark, CA and Simi Valley, CA?
Moorpark and Simi Valley have similar restriction levels.
Moorpark, CA
Ventura County
Rainwater harvesting is legal and encouraged in Moorpark under California state law (AB 1750, 2012). Residential rain barrels and cisterns do not require permits for containers up to standard residential sizes. The city's stormwater management program encourages onsite water retention. Larger systems may need a plumbing permit.
View full Moorpark rules →Simi 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 →Key Facts Comparison
| Fact | Moorpark | Simi Valley |
|---|---|---|
| Legal Status | Legal under CA law (AB 1750) | - |
| Small Barrels | No permit required | - |
| Large Cisterns | May need plumbing permit | - |
| Potable Use | Not permitted without treatment | - |
| Rebates | May be available through water district | - |
| 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.
Moorpark FAQ
Can I collect rainwater in Moorpark?
Yes. California law (AB 1750) explicitly permits residential rainwater harvesting. Standard rain barrels do not require a permit. Collected water can be used for landscape irrigation.
Do I need a permit for a rain barrel in Moorpark?
No permit is needed for standard residential rain barrels. Larger cistern systems connected to household plumbing may require a plumbing permit from Building and Safety.
Are there rebates for rain barrels in Moorpark?
The Ventura County Waterworks District may offer rebates as part of water conservation programs. Check with the district for current incentive programs and eligibility.
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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