Iron County, UT Noise from Specific Sources: Low-Frequency Bass Limits (2026)

Section 8.20.060(D)(2) targets the low-frequency bass problem specifically: operating a sound amplifier connected to a radio, stereo receiver, compact disc player, cassette tape player, or similar device in a manner that is plainly audible at 20 feet, and in a manner that causes a reasonable person to be aware of vibration accompanying the sound at that same 20-foot distance, is prima facie evidence of a violation. That vibration test is written as its own prima facie ground, distinct from subsection D(1)'s time-limited audibility test for other sound equipment, so a deep-bass system that a neighbor can feel through a wall or the ground can be cited even if the volume alone would not otherwise stand out.

As with the rest of subsection D, this evidence supplements rather than replaces the general nuisance standard in subsection A and the nine factors in subsection C, and it applies at any hour rather than only overnight. Enforcement officers under Section 8.20.090, including the sheriff's office, zoning officer, or building inspector, may act on a complaint, and subsection G allows an immediate citation without a prior notice to abate given the time-sensitive nature of an ongoing noise disturbance.