Dark Sky Rules: Mililani Mauka vs Waipahu
How do dark sky rules rules compare between Mililani Mauka, HI and Waipahu, HI?
Waipahu has fewer restrictions than Mililani Mauka.
Mililani Mauka, HI
Honolulu County
Mililani Mauka's commercial and recreational lighting must use full cut-off shielded fixtures to protect residential zones and preserve Central Oahu's darker skies.
View full Mililani Mauka rules →Waipahu, HI
Honolulu County
Waipahu commercial, industrial, and recreational development must use full cut-off shielded fixtures under ROH 21-4.100, protecting dense plantation-era residential blocks from light spill.
View full Waipahu rules →Key Facts Comparison
| Fact | Mililani Mauka | Waipahu |
|---|---|---|
| - | - | |
| Code section | - | ROH 21-4.100 |
| Fixture type | - | Full cut-off shielded |
| Applies to | - | Commercial/industrial |
| State companion | - | HRS 201-8.5 |
| Rooftop rule | - | Shield beyond rooftop |
Highlighted rows indicate differences between cities.
Mililani Mauka FAQ
Do MMA rec center lights meet the rule?
Outdoor recreational fixtures fall under the ordinance and must use shielded fixtures that eliminate direct spill.
Are residential porch lights regulated too?
The ordinance primarily targets commercial and recreational installations. Residential spillover is handled via nuisance.
Waipahu FAQ
Does the rule cover shopping centers on Farrington Highway?
Yes. Commercial sites along Farrington Highway must install full cut-off shielded fixtures to eliminate light spill onto adjacent residential Waipahu blocks.
What is a full cut-off fixture?
A fixture designed so no light is emitted above horizontal, directing all output downward. This is the standard required by ROH 21-4.100.
Are Waipahu sports field lights regulated?
Yes. Outdoor recreational lighting is covered by LUO 21-4.100 and must use shielded fixtures that eliminate illumination onto neighboring residential properties.
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