Dark Sky Rules: Ewa Gentry vs Waipahu
How do dark sky rules rules compare between Ewa Gentry, HI and Waipahu, HI?
Waipahu has fewer restrictions than Ewa Gentry.
Ewa Gentry, HI
Honolulu County
Ewa Gentry's commercial and recreational lighting must use full cut-off shielded fixtures to protect residential neighborhoods and the Ewa Plain's darker skies.
View full Ewa Gentry 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 | Ewa Gentry | 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.
Ewa Gentry FAQ
Do Ewa Plain sports field lights qualify?
Outdoor recreational fixtures fall under the rule. Newly installed lighting must meet full cut-off shielding.
Does the rule cover residential porch lights?
The ordinance primarily targets commercial and recreational installations. Residential fixtures are addressed 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.
Compare other topics
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