Oxnard, CA Landscaping Rules: Rainwater Harvesting (2026)
Key Facts
- State Law
- AB 1750 allows rooftop capture
- Permit
- Not needed for barrels up to 250 gal
- Use
- Landscape irrigation only
- Mosquito Control
- No standing water allowed
Summary
Oxnard encourages rainwater harvesting for landscape irrigation. California AB 1750 expressly allows rainwater capture from rooftops. No city permit is required for standard rain barrel systems, though larger cisterns may need building permits.
PART 2.4. Rainwater Capture Act of 2012 10570. This part shall be known, and may be cited, as the Rainwater Capture Act of 2012. 10571. The Legislature finds and declares all of the following:
(a) As California has grown and developed, the amount of stormwater flowing off buildings, parking lots, roads, and other impervious surfaces into surface water streams, flood channels, and storm sewers has increased, thereby reducing the volume of water allowed to infiltrate into groundwater aquifers and increasing water and pollution flowing to the ocean and other surface waters. At the same time, recurring droughts and water shortages in California have made local water supply augmentation and water conservation efforts a priority.
10573. Solely for the purposes of this part, and unless the context otherwise requires, the following definitions govern the construction of this part:
(a) “Developed or developing lands” means lands that have one or more of the characteristics described in subparagraphs (A) to (C), inclusive, of paragraph (4) of subdivision (b) of Section 56375.3 of the Government Code.
(b) “Rain barrel system” is a type of rainwater capture system that does not use electricity or a water pump and is not connected to or reliant on a potable water system.
(c) “Rainwater” means precipitation on any public or private parcel that has not entered an offsite storm drain system or channel, a flood control channel, or any other stream channel, and has not previously been put to beneficial use.
(d) “Rainwater capture system” means a facility designed to capture, retain, and store rainwater flowing off a building rooftop for subsequent onsite use.
10574. Use of rainwater collected from rooftops does not require a water right permit pursuant to Section 1201.
Full Breakdown
California Assembly Bill 1750 (2012) established the right to capture rainwater from rooftops throughout the state, including Oxnard. Residential rain barrels up to 250 gallons typically require no permit. Larger cistern systems may need a building permit for structural and plumbing connections. The city's water conservation programs encourage rainwater harvesting as a supplemental irrigation source, particularly important in the semi-arid climate. Captured rainwater should be used for landscape irrigation, not potable purposes. Systems must not create standing water that breeds mosquitoes. Ventura County Watershed Protection District provides resources on rainwater capture best practices.
Violations & Fines
Standard rain barrel installation has no violations risk. Large unpermitted cistern systems may face building code corrections. Standing water creating mosquito habitat may trigger vector control enforcement.
Frequently Asked Questions
Can I collect rainwater in Oxnard?
Do I need a permit for a large rainwater tank in Oxnard?
Can I use captured rainwater for drinking in Oxnard?
Sources & Official References
Other rules in Oxnard
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Rainwater Harvesting in Nearby Cities
How other cities in Ventura County handle rainwater harvesting.