Waterloo, IA Landscaping Rules: Weed Ordinances (2026)

Section 7-5B-2(A) of the Waterloo City Code declares weeds, vines, brush, volunteer trees, grass, noxious weeds and other growths a weed hazard or public nuisance once they exceed twelve inches in height on any lot or parcel within the city limits, tightening to an eight-inch ceiling on lots carrying a residential zoning classification. The property owner or person in possession must abate the hazard. Subsection B separately makes it unlawful to maintain, cause or permit weeds or other herbaceous vegetation to grow as a nuisance or weed hazard, with the code enforcement department or its designee making that determination.

Code enforcement officers administer the article under section 7-5B-4. A complaint or the department's own observation triggers a written notice under section 7-5B-5: the first notice of the calendar year gives the owner five days to abate from the date of posting and mailing, while any later notice on the same property that year gives only three days. If the owner still does not act, the city can mow the lot itself under its mowing contract and assess the cost against the property, with an appeal process available through the city clerk.