Iowa City does not publish a decibel-per-zoning-district industrial noise table. Industrial and commercial noise is regulated through Title 6 Chapter 4 (§6-4-1 reasonableness standard) plus the zoning performance standard in Title 14 §14-5H-4 (Noise), which incorporates the Title 6 noise-control rules.
Title 14 Chapter 5H is the 'Performance Standards' chapter of the zoning code, and §14-5H-4 (Noise) requires all uses to comply with Title 6 Chapter 4. The city uses the general §6-4-1 'noise disturbance' standard rather than a decibel-by-zoning matrix. Industrial users near residential boundaries must avoid loud and raucous noise that unreasonably disturbs ordinary persons. Continuing problems are handled as §6-1-2 public-nuisance abatements - the Code enumerates persistent noise and offensive operations as public nuisances. HVAC, compressors, generators, and loading-dock operations near homes are the most common complaint sources.
A §6-4-1 disturbance is a municipal infraction. A continuing industrial-noise problem can be cited under §6-1-2 and abated by the city after notice, with abatement costs assessed against the property. Repeated zoning-condition violations can trigger a stop-use order by NDS.
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See how Iowa City's industrial noise rules stack up against other locations.
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