Iowa Code § 445.63: Abatement of taxes.

When taxes are owing against a parcel owned or claimed by the state or a political subdivision of this state and the taxes were owing before the parcel was acquired by the state or a political subdivision of this state, the county treasurer shall give notice to the appropriate governing body which shall pay the amount of the taxes due. If the governing body fails to immediately pay the taxes due, the board of supervisors shall abate all of the taxes.