Sammamish, WA Public Conduct: Loud Party Ordinance (2026)

020 then states flatly: "(1) An underage gathering constitutes a public nuisance, and is prohibited. " Liability does not stop at the minors themselves. 010(3) defines "responsible person" to include anyone with "the right to actually control the property at the time that an underage gathering occurs," anyone "in immediate control of property at which an underage gathering takes place," and anyone who "organizes, supervises, sponsors, conducts, allows, controls, or controls access to the underage gathering," meaning a parent, landlord, or event host who allows the gathering can be held liable even without personally serving alcohol.

030 exempts locations licensed by the Washington State Liquor Control Board, gatherings where minors drink under direct parental or guardian supervision, alcohol given for documented medicinal purposes, and alcohol used in religious services. 040: a first violation by a responsible person is a civil infraction with a $500 fine "for each day that any violation occurs," rising to "$1,000 for each day that any violation occurs" for a second or later violation within five years of the first.