The tax shall be computed, entered upon the tax rolls and collected in the same manner as county taxes are computed, entered and collected. Such taxes shall be a lien on the taxable property of the district and shall be paid with, and not separately from, county taxes. All moneys so collected shall be paid into the county treasury or treasuries of the county or counties in which the district lies and shall be transferred upon order of the district board to the district and placed in the proper fund or funds of the district; provided, however, that the proceeds of any tax levied to pay principal or interest of bonds which is payable at the office of the treasurer of the organizing county at the option of the holder, or otherwise, shall be placed in the bond interest and sinking fund of the district in the treasury of the organizing county.