§ 1199-u. County may levy tax within district. Should it appear to the county legislature at any time that the revenue of the authority is or will be insufficient to provide for the payment of any bonds issued under this title and to reimburse the county for any moneys that it may have advanced to the authority, the county legislature shall determine the amount of money necessary to be raised for such purpose, and shall levy a tax on the territory of the district located within the county and upon the several parcels of real estate in the district located within the county in an amount sufficient to produce the amount necessary to be raised as aforesaid; provided that such tax shall not be levied to pay any bonds of the authority unless the authority with the consent of the county legislature has pledged such tax prior to the issuance of such bonds. Such tax shall be levied and apportioned upon such territory located within the county and collected from the several parcels of real estate in the district located within the county in like manner as other county taxes. It is hereby determined that the liability imposed upon the territory included in the district located within the county is based upon the special benefit to such territory accruing under this title and that the tax to be levied because of such liability and in proportion to the taxable value of real estate in such territory will be in proportion to such benefits.