Imperial County, CA Noise Ordinances: Amplified Music & Events (2026)

Imperial County regulates amplified music and sound reproduction in unincorporated areas under Title 9, Division 7, Section 90703.02(B). It is unlawful to use, operate, or permit to be played any sound production or reproduction device, radio, musical instrument, drum, phonograph, television set, loudspeaker or sound amplifier in such a manner as to disturb the peace, quiet and comfort of any reasonable person of normal sensitivity in any residential or public area. The ordinance carves out participants in a duly licensed parade and persons otherwise authorized by the County. Critically, the ordinance sets a clear nighttime test: operating any such device between 10 p.m. and 7 a.m. in a manner plainly audible at a distance of 50 feet from the building, structure or vehicle in which it is located is prima facie evidence of a violation. This 'plainly audible at 50 feet' standard makes nighttime enforcement straightforward and does not require a decibel meter. During the day, amplified sound is still subject to the general nuisance prohibition in Section 90703.00 and to the one-hour average sound-level limits in Section 90702.00 measured at the property line (for example, 50 dB by day in R-1 zones). Factors used to judge a violation include the noise level, time of day, duration, proximity to sleeping facilities, and whether it is recurrent or constant. Code Enforcement and the Sheriff handle complaints in unincorporated areas.