The revenue laws of this state for the assessment, levying and collection of taxes for state and county purposes, except as herein modified, shall be applicable for the purposes of the district in the collection of assessments including the enforcement of penalties and forfeiture for delinquent taxes. All interest and penalties that may be collected on delinquent assessments levied and assessed for district purposes shall be by the respective county treasurers delivered to the treasurer as herein provided for the delivery of assessments collected by such county treasurer.