Section 4. - [Payment of bonds.]

The principal of and interest on the bonds issued under this act may be payable from the revenues derived from the operation of the system, and from other funds legally available for such purpose; provided, however, that neither the bonds issued under this act, nor the interest thereon, shall have any lien upon any property of or in the City of Jacksonville or any property of JEA except the revenues and other legally available funds, if any, pledged for the payment thereof. (Laws of Fla., Ch. 80-513, § 4; Laws of Fla., Ch. 99-459, § 4)