Hawaii Grease Trap Regulations
FOG Compliance Overview
Hawaii follows the Uniform Plumbing Code (UPC) as its base plumbing code. The UPC requires grease interceptors for commercial kitchens and uses fixture unit calculations for sizing requirements. The state's regulatory authority is the Hawaii Department of Health.
With approximately 3,703 food service establishments statewide, Hawaii has significant FOG compliance needs. Individual cities and municipalities may adopt additional local ordinances that go beyond the state plumbing code, including stricter pumping schedules, permit requirements, and enforcement penalties.
Need a grease trap in Hawaii?
Our free calculator uses UPC code requirements to recommend the right size for your establishment.
Size My Grease TrapCity Regulations in Hawaii
No detailed city regulations available yet for Hawaii. Check back soon.
Frequently Asked Questions
What plumbing code does Hawaii follow for grease traps?
Hawaii follows the Uniform Plumbing Code (UPC). The UPC requires grease interceptors for commercial kitchens and uses fixture unit calculations for sizing. Individual cities may adopt stricter local ordinances.
How many food service establishments are in Hawaii?
Hawaii has approximately 3,703 food service establishments according to Census Bureau County Business Patterns data. We currently cover detailed FOG regulations for 0 cities in the state.
What size grease trap do I need in Hawaii?
Grease trap sizing in Hawaii depends on your establishment's flow rate, number of fixtures, and local code requirements under the UPC. Use our free sizing calculator for a recommendation tailored to your setup.
Regulations change frequently. Always verify current requirements with your local wastewater authority or plumbing inspector before making compliance decisions. Last updated: March 2026.