Cal. Water Code § 36252

Bonds may be issued for the purposes of acquiring or constructing works for irrigation, domestic, municipal and industrial water supply and to furnish facilities and services within or without the district to the extent provided for in Section 35500 for the collection, treatment and disposal of sewage, waste and storm water including the acquisition of necessary property for these works, acquiring funds to fulfill contractual commitments to carry out the powers and purposes of the district contained in contracts with other agencies, acquiring all or part of the operating funds for the district, the total amount of such funds so acquired not to exceed at any time an amount equal to the total operating costs of the district for a two-year period as estimated by its board, acquiring any property necessary for the purposes of the district, and otherwise carrying out the provisions of this division.