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.
California law explicitly permits rainwater harvesting for residential use. AB 1750 (2012) established that no permit is required for small-scale residential rainwater harvesting systems. Standard rain barrels (typically 50-100 gallons) can be installed without city permits. Larger cistern systems may require a plumbing permit if connected to household plumbing. The city's stormwater quality management program under MMC Chapter 15.24 encourages onsite retention of stormwater, making rain barrels a complementary practice. Collected rainwater can be used for landscape irrigation. The Ventura County Waterworks District may offer rebates for rain barrel purchases as part of water conservation programs. Water quality regulations prohibit using harvested rainwater for potable purposes without treatment.
Small residential rain barrels are not subject to enforcement. Large cisterns connected to plumbing without permits may need retroactive permitting. Systems that create standing water attracting mosquitoes may violate §8.48.020(Q). Contact Building and Safety at (805) 517-6272 for large systems.
Moorpark, CA
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Moorpark, CA
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Side-by-side rule comparisons with other cities in Ventura County.
See how other cities in Ventura County handle rainwater harvesting.
See how Moorpark's rainwater harvesting rules stack up against other locations.
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