Iowa Code § 331.489
A county which has created a district for a public improvement and, to the extent provided in the agreement creating a joint special assessment district, each county or city which is a party to the agreement, may establish, impose, adjust, and provide for the collection of rates and charges to produce gross revenues at least sufficient to pay the expenses of operation and maintenance of a public improvement, against property within the district and, where appropriate, establish, impose, adjust, and provide for the collection of charges for connection to a public improvement. The rates and charges must be established by ordinance of the governing body of the county or the city imposing the rates or charges. The rates and charges established as provided in this section, if not paid as provided by the ordinance of the governing body, are a lien upon the premises served or benefited by the public improvement and may be certified to the county treasurer and collected in the same manner as property taxes.
Iowa Code § 331.489
90 Acts, ch 1115, §5; 93 Acts, ch 73, §2
Referred to in §445.1
Collection of taxes, see chapter 445