Public Health Rules in Washington County, OR (2026)
1 county-level rule, plus city-specific rules for 2 cities in Washington County, Oregon.
Verified from official government sources
Note: These county rules apply to unincorporated areas of Washington County. If you live within an incorporated city, that city's own rules apply: see the city list below.
Rodent Control
Any unincorporated-area property infested by rats, mice or other vectors, or piled with material that could harbor them, is a declared county nuisance; the health department can order the infestation cleared within 15 days or abate it and bill the owner.
Washington County Rodent & Vector Nuisance Rule
Some RestrictionsWashington County Code § 8.20.030(A)(7) — Nuisances Designated
A.It shall be unlawful for any owner or person in charge of property to maintain or allow to exist, the following things, practice, or conditions on his property, which are declared to be nuisances:...7.Any property, whether vacant or improved, building or structure that is infested by flies, fleas, rodents, lice, ticks, rats, mice, fly maggots, mosquito larvae, or other vector and their hosts;...
Public Health Rules by City in Washington County
2 cities in Washington County have their own public health rules rules. Each link goes to that city's dedicated page with code citations.
All Washington County ordinances
See every category we cover for Washington County: parking, noise, fences, fires, animals, pools, and more.
Washington County Ordinance Hub →