Waterloo, IA Public Conduct: Loud Party Ordinance (2026)

Under Waterloo City Code section 5-5-1, "Loudpart (loud party)" is one of the specific nuisance activities tracked in the Waterloo Police Department's call-reporting database, alongside disorderly conduct, fighting and weapons calls. Section 5-5-4 makes a property a "chronic nuisance property" once it generates three or more police-service calls for nuisance activities resulting in an enforcement action within any 12-month period; calls reported by the owner or found to involve domestic abuse do not count. Once declared, the Chief of Police must send the owner written notice under section 5-5-5, served at least 20 days before any judicial action, with a copy to the Code Enforcement Division.

The owner or host is then billed a police service fee of $50.00 per hour per responding officer for each subsequent nuisance call, with any fraction of an hour billed as a full hour; unpaid fees are assessed against the property like a property tax under Iowa Code section 364.22. Section 5-5-6 makes violating or resisting enforcement of the chapter a municipal infraction carrying a $100.00 civil penalty for a first offense and $200.00 for each repeat offense at the same location, without precluding the city from also seeking abatement or injunctive relief. A landlord can be deemed to have abated the nuisance by starting eviction proceedings under Iowa Code chapter 562A.