Mich. Comp. Laws § 41.729
When any special assessment roll shall be confirmed the township board shall direct the assessments made therein to be collected. The township clerk shall thereupon deliver to the township treasurer such special assessment roll, to which he shall attach his warrant commanding the township treasurer to collect the assessments therein in accordance with the directions of the township board in respect thereto. Said warrant shall further require the township treasurer on the 1st day of September following the date when any such assessments or any part thereof have become due to submit to the township board a sworn statement setting forth the names of the persons delinquent, if known, a description of the parcels of land upon which there are delinquent assessments and the amount of such delinquency, including accrued interest and penalties computed to September 1 of such year. Upon receiving such special assessment roll and warrant the treasurer shall proceed to collect the several amounts assessed therein as the same shall become due.
MCL 41.729