Stationary noise sources in Mililani Town, including HVAC, commercial refrigeration, and data center equipment at Mililani Tech Park, must meet Hawaii HAR 11-46 dBA caps by zoning class.
HAR 11-46 sets maximum permissible sound levels measured at receiving property lines. For Mililani's Class A residential zones, limits are 55 dBA daytime and 45 dBA nighttime. The Mililani Tech Park and commercial corridors fall in higher-tolerance zoning but still must respect residential-boundary measurements. DOH investigates complaints and can order operational changes, enclosures, or hours adjustments. ROH Chapter 41 Article 6 supplements with city-level enforcement of general nuisance noise. Mililani HOAs typically bar industrial-style noise in residential areas under covenant.
DOH administrative fines up to $10,000 per day; ROH §41-6 citations begin at $100; HOA fines separate.
See how other cities in Honolulu County handle industrial noise.
See how Mililani Town's industrial noise rules stack up against other locations.
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