Each municipality which may now or hereafter own a system or systems and which shall have authorized a corporation to be incorporated under the provisions of this division, is hereby authorized to transfer and convey any such system or systems to such corporation without the necessity of authorization at an election of the qualified voters of such municipality; provided, that an ordinance authorizing such transfer and conveyance shall have theretofore been duly enacted by the governing body of such municipality; provided further, that such corporation shall assume and agree to pay, as the same become due and payable, the principal of and interest on any obligations of such municipality that are payable from or secured by the revenues from the system or systems so transferred or shall pay to such municipality at the time of the transfer an amount of money sufficient to provide funds to retire any such obligations. The governing body of such municipality is hereby authorized to enter into any agreements with such corporation which may be necessary or appropriate in order to effectuate such transfer and in the instrument of transfer may impose any conditions or stipulations deemed advisable by its governing body and not inconsistent with the provisions of this division respecting the subsequent control, management, operation, extension, and improvement by such corporation of the system or systems so transferred to it. Nothing contained in this division shall be construed to authorize any corporation organized under this division to convey any system which may be transferred to it by a municipality so as to vest title thereto in private ownership and control; provided, however, that title to such a system may be subjected pursuant to the provisions of this division to a mortgage, deed of trust, or pledge agreement as security for repayment of money borrowed by such corporation.