Bonds issued under the provisions of this part shall not be deemed to constitute a debt or liability of the local agency or a pledge of the faith and credit of the local agency, but shall be payable solely from the funds specified in this part. All such bonds shall contain on the face thereof a statement to the following effect:
Neither the faith and credit nor the taxing power of the [local agency] is pledged to the payment of the principal of or interest on this bond.
The issuance of bonds under the provisions of this part shall not directly, indirectly, or contingently obligate the local agency to levy or to pledge any form of taxation whatever therefor or to make any appropriation for their payment.