Simpsonville, SC Noise Ordinances: Decibel Limits (2026)

Sec. 18-90 provides a guideline chart of dB(A) levels that establish a prima facie violation of Sec. 18-82, subject to rebuttal by time, place and circumstance. For 'radios, musical instruments, amplified sounds, stereos and like devices' the citywide limits are 60/70 dB(A) day inside/outside and 55/65 night inside/outside. For construction machinery, solid-waste pickup, lawn mowers and power tools, day limits are 70 inside / 80 outside citywide, with nighttime marked '* Permit required.' Central Business District thresholds run higher. Outside readings are taken at least 25 feet away (CBD) or 100 feet in parks. Meters must meet ANSI standard slow-response design; Sec. 18-83 stresses a meter is not mandatory to prove a disturbance.