East Honolulu vs Waipahu
How do industrial noise rules compare between East Honolulu, HI and Waipahu, HI?
East Honolulu and Waipahu have similar restriction levels.
East Honolulu, HI
Honolulu County
ROH Chapter 41 Article 6 supplements state HAR 11-46 decibel limits for any industrial or stationary noise sources impacting East Honolulu residential neighborhoods.
View full East Honolulu rules →Waipahu, HI
Honolulu County
Waipahu commercial and industrial noise sources follow ROH Chapter 41 Article 6 and state HAR 11-46 dBA limits, protecting the CDP's dense residential blocks.
View full Waipahu rules →Key Facts Comparison
| Fact | East Honolulu | Waipahu |
|---|---|---|
| Code Section | ROH Section 41-6 | ROH Section 41-6 |
| State Rule | HAR 11-46 | HAR 11-46 |
| Residential Class | Class A strictest | Class A strictest |
| Joint Enforcement | DOH and HPD | DOH and HPD |
Highlighted rows indicate differences between cities.
East Honolulu FAQ
What dBA applies near Hawaii Kai homes?
Class A residential zones are limited to roughly 55 dBA daytime and 45 dBA nighttime under HAR 11-46, measured at the receiving property line.
Can a neighbor's pool pump violate this rule?
Yes, if it exceeds HAR 11-46 dBA limits at the East Honolulu property line, DOH can require abatement. Quieter equipment or enclosures are common fixes.
Waipahu FAQ
What about refrigeration units at Waipahu markets?
Commercial refrigeration and HVAC equipment near Waipahu homes must meet HAR 11-46 dBA limits at the residential property line. DOH can order acoustic shielding when limits are exceeded.
Are small warehouses covered?
Yes. Light-industrial operations along Farrington Highway must meet HAR 11-46 dBA limits wherever their noise reaches adjacent Waipahu residential zones, regardless of business size.
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