Sutter, CA Noise Ordinances: Decibel Limits (2026)

Many California jurisdictions publish an enforceable noise table with maximum decibel levels by zone and time of day. Sutter County does not. A 2010 noise study prepared for the California Public Utilities Commission states that "Sutter County has not adopted a noise ordinance," which means there is no code section a resident or officer can use to measure a neighbor's noise against a fixed dBA limit. The numeric guidance that does exist is in the General Plan noise element, whose goal is "to protect county residences from the harmful effects of exposure to excessive noise," implemented by not allowing new noise-sensitive land uses where existing ambient noise would exceed acceptable limits. In California planning practice, the key threshold used in this kind of land-use compatibility review is the 60 dB Ldn/CNEL contour for residential development. Critically, this is a planning standard applied to siting and approving new projects through the development-review and CEQA process at Sutter County Development Services — it is not a real-time enforcement limit for an existing noisy neighbor, party, or business. The county zoning code defines a decibel (dB) as a logarithmic unit of sound intensity (0 dB at the threshold of hearing, 130 dB at the threshold of pain) but does not attach numeric operational caps to land uses for enforcement. For an active disturbance, the operative law remains California Penal Code 415.