In connection with the issuance of any bonds under this chapter, and in order to secure the payment of any such bonds and the interest thereon, the district shall have the power to provide that bonds issued under this chapter, subject only to the prior payment of the operation and maintenance expenses of any project, shall be payable from and secured by a pledge of and lien on all or any part of the income and revenues derived from, and to pledge and assign to, or in trust for the benefit of, the holder or holders of bonds issued under this chapter all or any part of the income and revenues derived from:
SDCL 46A-1-33