Rainwater harvesting is encouraged in San Diego through rebate programs and stormwater management goals. Rain barrels and cisterns under 5,000 gallons do not require a permit. Systems over 5,000 gallons require a building permit. Collected rainwater may not be used as drinking water per state and local regulations. The County's Waterscape Rebate Program offers enhanced rebates for rain gardens and rain-saving containers.
Rainwater harvesting in San Diego is generally permitted for residential use including garden irrigation, lawn watering, and non-potable household purposes. California does not impose significant state-level restrictions on residential collection. Rain barrels and cisterns may be installed without special permits in most cases, though large systems may trigger building or plumbing permits. HOAs may have restrictions on visible rain barrel placement. Potable use of collected rainwater requires treatment systems that meet health department standards. Some cities offer rain barrel rebate programs.
No penalties for standard residential collection. Large cistern installations without building permit: standard building code violation $100 to $500.
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Side-by-side rule comparisons with other cities in San Diego County.
See how other cities in San Diego County handle rainwater harvesting.
See how San Diego's rainwater harvesting rules stack up against other locations.
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