Mililani stormwater is regulated under ROH Chapter 43 Article 11, which prohibits most non-stormwater discharges to the city's separate storm sewer flowing to Waikele Stream.
Honolulu's MS4 ordinance covers Mililani even though the community is inland. Section 43-11.12 governs connections to the separate storm sewer, and Sec. 43-11.22 bars discharging anything other than stormwater into the system. Administrative Rules Relating to Water Quality adopted under ROH 14-12 set pollutant thresholds and best management practices. Mililani's stormwater drains to Waikele Stream and ultimately Pearl Harbor, which has heightened pollutant concerns due to historic impairment. Typical residential issues include car-wash runoff, fertilizer and pesticide overspray, pet waste, and construction sediment.
Illicit discharges, construction BMP failures, or unauthorized storm sewer connections can bring significant civil penalties.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
Mililani Town, HI
Residential pools in Mililani Town must meet ROH Sec. 16-6.2 barrier standards. Fences at least 48 inches high with self-closing gates are required, on top o...
Mililani Town, HI
Mililani Town retaining walls follow ROH Sec. 21-4.40 rules and HOA review. Fill-retaining walls in required yards cannot exceed 6 feet, and terraced walls a...
Mililani Town, HI
Mililani Town fence materials are limited by both ROH Sec. 21-4.60 definitions and MTA/MMA design guidelines, which typically restrict visible front-yard mat...
Mililani Town, HI
Mililani Town neighbor fence disputes are governed by ROH Sec. 21-4.30 yard rules plus HOA covenants. Honolulu has no spite-fence ordinance, making HOA media...
Mililani Town, HI
Public parks in Mililani Town close during posted night hours under ROH Sec. 10-1.2, while HOA recreation centers follow separate private hours set by the as...
Mililani Town, HI
Mililani Town follows the state juvenile curfew under HRS Sec. 577-16 barring children under 16 from public places between 10 p.m. and 4 a.m. without a paren...
Side-by-side rule comparisons with other cities in Honolulu County.
See how other cities in Honolulu County handle stormwater management.
See how Mililani Town's stormwater management rules stack up against other locations.
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