Sanitary districts are authorized to make appropriations and to levy annually a tax on property having a situs in the district under the rules and according to the procedure prescribed in the Machinery Act for the purpose of paying the principal of and interest on bonds validated in N.C. Gen. Stat. § 130A-77 The tax shall be sufficient for this purpose and shall be in addition to all other taxes which may be levied upon the taxable property in the sanitary district. (1945, c. 89, s. 3; 1957, c. 1357, s. 1; 1973, c. 803, s. 17; 1983, c. 891, s. 2.)