The treasurer shall inform the landowner or any authorized person proposing to lessen or remove the lien of an improvement district assessment upon a piece of land of the amount of principal and interest due and to become due on warrants and the amount of any other indebtedness payable out of the improvement district assessment. Upon receipt of funds the treasurer shall take such action as is necessary to clear the specified land of all or the appropriate portion of the lien created by the improvement district assessment.