Pomona, CA Landscaping Rules: Rainwater Harvesting (2026)
Key Facts
- State Law
- Legal for non-potable uses
- Permit
- Not required for residential collection
- Local Restrictions
- None specific to Pomona
- Encouraged
- Part of water conservation efforts
Summary
Rainwater harvesting is legal and encouraged in California. No Pomona-specific restrictions exist. CA law allows residential rainwater collection without a permit for non-potable uses.
to read: 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.
Full Breakdown
Rainwater harvesting in Pomona 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.
Sources & Official References
Other rules in Pomona
California rules heatmap·Compare Pomona to another location·View the California landscaping rules overview
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Rainwater Harvesting in Nearby Cities
How other cities in Los Angeles County handle rainwater harvesting.