It shall be the duty of the board of supervisors of each county within the district to annually cause to be levied upon the lands only, exclusive of improvements, within the county liable therefor the amounts reported to it by the treasurer of such district, which amounts shall be clearly sufficient to pay the principal and interest coming due or past due in such year upon any funding bonds of the district together with a sufficient amount to cover delinquencies.

(Added by Stats. 1943, Ch. 284.)