Pearl City allows residential rainwater harvesting with no ordinance restriction. Rain barrels are practical for yards in Pacific Palisades and Manana, with BWS rebates available.
Pearl City's moderate rainfall on the Koolau foothill side, especially in Pacific Palisades and upper Manana, supports simple rain barrel systems well. The City and County of Honolulu has no specific ordinance regulating residential rainwater harvesting, and Hawaii does not restrict collection. Exterior outdoor-irrigation catchment with storage up to 360 gallons does not require a plumbing permit under the Hawaii Plumbing Code (2018 UPC Chapter 16). The Honolulu Board of Water Supply offers rain barrel rebates that are popular with cost-conscious military families. Guidance is available from the University of Hawaii CTAHR Rainwater Catchment Systems Program.
No ordinance-based violations for standard outdoor catchment; systems connected to indoor plumbing must follow plumbing code and health regulations.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
Pearl City, HI
Pearl City residential pools must be enclosed under ROH Sec. 16-6.2, with companion standards at 16-7.9 covering public and condo pools at Pearl City Highlan...
Pearl City, HI
Pearl City retaining walls on the Pearl City Highlands and Manana hillsides fall under ROH 21-4.40, capping fill-bearing walls in required yards at 6 feet an...
Pearl City, HI
Pearl City fence materials follow the LUO fence definition in ROH 21-4.60, allowing wrought iron, wood, vinyl, plastic, and wire on post foundations in Waiau...
Pearl City, HI
Pearl City neighbor fence disputes apply ROH 21-4.30 yard setbacks with 21-4.60 height limits, since Hawaii has no dedicated spite fence statute for Waiau or...
Pearl City, HI
Public parks in Pearl City, including Pearl City District Park and Neal S. Blaisdell Park, are closed during posted night hours. Entering closed parks is pro...
Pearl City, HI
Pearl City follows the Hawaii state juvenile curfew under HRS 577-16. Children under 16 cannot be in public places between 10 pm and 4 am without a parent or...
Side-by-side rule comparisons with other cities in Honolulu County.
See how other cities in Honolulu County handle rainwater harvesting.
See how Pearl City's rainwater harvesting rules stack up against other locations.
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