Environmental Rules in Pearl City, HI (2026)
5 verified environmental rules for Pearl City, Hawaii, sourced directly from the municipal code and official government pages.
Verified from official government sources
Stormwater Management
Pearl City's drainages into Pearl Harbor estuary fall under strict ROH Chapter 43, Article 11 stormwater rules prohibiting non-stormwater discharges to the city's MS4 system.
Stormwater Discharge Rules in Pearl City
Heavy RestrictionsErosion Control
Pearl City construction projects must submit erosion and sediment control plans under ROH Sec. 18A-1.6 before the city issues building, grading, stockpiling, or trenching permits.
Erosion and Sediment Control Plans in Pearl City
Heavy RestrictionsCoastal Development
Shoreline-adjacent properties in Pearl City along Pearl Harbor require Special Management Area permits under ROH Chapter 25, implementing HRS Chapter 205A coastal management.
Special Management Areas Near Pearl City
Heavy RestrictionsFlood Zones
Development in Pearl City's FEMA-mapped flood zones must comply with ROH Chapter 21A, which governs special flood hazard areas, elevation standards, and flood variance procedures.
Flood Hazard Area Rules for Pearl City
Heavy RestrictionsGrading & Drainage
Pearl City hillside properties, including Pacific Palisades and Waiawa area lots, require grading permits under ROH Chapter 18A when land disturbance exceeds permit thresholds.
Grading Permits for Pearl City Hillside Projects
Heavy RestrictionsLooking for Honolulu County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Pearl City city rules.
Environmental Rules in Honolulu County →