5 county-level rules, plus city-specific rules for 1 city in Benton County, Washington.
Verified from official government sources
Unincorporated Benton County treats excessive noise as a public nuisance under BCC 6A.15, backed by Washington's WAC 173-60 environmental limits: 55 dBA daytime and 45 dBA between 10 p.m. and 7 a.m. for residential property.
WAC 173-60-040
Between the hours of 10:00 p.m. and 7:00 a.m. the noise limitations of the foregoing table shall be reduced by 10 dBA for receiving property within Class A EDNAs.
Construction noise in unincorporated Benton County is exempt from WAC 173-60 limits while work is underway, but that exemption disappears in residential areas between 10 p.m. and 7 a.m., which effectively sets nighttime quiet.
WAC 173-60-050
Sounds originating from temporary construction sites as a result of construction activity.
A chronically barking dog in unincorporated Benton County is handled as a public nuisance under BCC 6A.15 and can violate WAC 173-60 noise limits. Animal control and the Sheriff investigate documented complaints.
WAC 173-60-040
No person shall cause or permit noise to intrude into the property of another person which noise exceeds the maximum permissible noise levels set forth below in this section.
Unincorporated Benton County sets no leaf-blower ban or equipment restriction. Gas blowers are legal, limited only by the general noise-nuisance rules; using one late at night near homes could draw a complaint.
Amplified music in unincorporated Benton County must stay within WAC 173-60 property-line limits (55 dBA day, 45 dBA after 10 p.m.), and BCC 6A.15 exempts only unamplified voices between 6 a.m. and 10 p.m.
WAC 173-60-040
No person shall cause or permit noise to intrude into the property of another person which noise exceeds the maximum permissible noise levels set forth below in this section.
1 cities in Benton County have their own noise ordinances rules. Each link goes to that city's dedicated page with code citations.
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Benton County Ordinance Hub →