Environmental Rules in East Honolulu, HI (2026)
5 verified environmental rules for East Honolulu, Hawaii, sourced directly from the municipal code and official government pages.
Verified from official government sources
Stormwater Management
East Honolulu's coastal drainages to Maunalua Bay and Hawaii Kai waterways fall under ROH Chapter 43, Article 11 stormwater rules prohibiting non-stormwater discharges to the city's MS4 system.
Stormwater Discharge Rules in East Honolulu
Heavy RestrictionsErosion Control
Land disturbing projects in East Honolulu require approved erosion and sediment control plans under ROH Sec. 18A-1.6 before building, grading, stockpiling, or trenching permits issue.
Erosion and Sediment Control Plans for East Honolulu Projects
Heavy RestrictionsCoastal Development
Coastal development along East Honolulu's Maunalua Bay shoreline requires Special Management Area permits under ROH Chapter 25, implementing HRS Chapter 205A coastal zone management.
Special Management Area Permits in East Honolulu
Heavy RestrictionsFlood Zones
Development in East Honolulu's FEMA-mapped flood zones falls under ROH Chapter 21A, which governs special flood hazard areas, flood fringe elevation standards, and flood variance procedures.
Flood Hazard Area Development in East Honolulu
Heavy RestrictionsGrading & Drainage
East Honolulu hillside lots in Mariner's Ridge, Kamilo Iki, and Kuliouou Valley require grading permits under ROH Chapter 18A when land disturbance exceeds permit thresholds.
Grading Permits for East Honolulu Hillside Lots
Heavy RestrictionsLooking for Honolulu County county-wide rules?
County ordinances apply to unincorporated areas and may supplement East Honolulu city rules.
Environmental Rules in Honolulu County →