Quiet hours in Yakima County, WA — also called the noise ordinance, nighttime noise rules, or residential quiet time — define the hours during which excessive noise is prohibited.
Unincorporated Yakima County adopts Washington's environmental noise limits through County Code Chapter 6.28, which incorporates WAC 173-60: 55 dBA daytime and 45 dBA nighttime at residential property, the limit dropping 10 dBA between 10 p.m. and 7 a.m.
Washington has no single statewide "quiet hours" statute. Instead, unincorporated Yakima County enforces the state's maximum environmental noise levels through County Code Chapter 6.28 (Noise Control), which adopts WAC 173-60. For Class A residential receiving property the limit is 55 dBA, reduced to 45 dBA between 10 p.m. and 7 a.m. Incorporated cities like Yakima set their own disturbance rules. Complaints in unincorporated areas go to the Yakima County Sheriff's Office; the state Department of Ecology can also enforce WAC 173-60.
Enforced as a public nuisance or by the Department of Ecology under WAC 173-60. A warning is typical first; continued violations can bring civil penalties and abatement.
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