(A) Notwithstanding the provisions of § 5-37-30, assessments, revenues, or debt service on bonds which may be used under this chapter to fund municipal improvements must not impose or be derived from, in whole or in part, a tax or assessment on property not located in the improvement district. Bonds issued pursuant to § 5-37-30, however, may be made payable from assessments imposed on property located in the improvement district, and may be additionally secured, in whole or in part, by the full faith, credit, and taxing power of the municipality, if the governing body of the municipality certifies on the date of issuance of the bonds that the assessments as imposed are sufficient as to both amount and duration to pay all debt service on these bonds as they become due.

(B) The provisions of this section do not apply to projects or undertakings designated by a municipal governing body as a "system" pursuant to § 6-21-40.