Cal. Wat. Code § 12936
All bonds herein authorized, which shall have been duly sold and delivered as herein provided, shall constitute valid and legally binding general obligations of the State of California, and the full faith and credit of the State of California is hereby pledged for the punctual payment of both principal and interest thereof. Notwithstanding the provisions of subdivision (b) of Section 16731 of the Government Code, the first date or dates of maturity of any series of bonds issued under this chapter shall be not more than 10 years, and the last dates of maturity of any such series of bonds may be fixed at any date or dates to and including 50 years, after the date of that series. The committee may fix different dates for the bonds of each series and the bonds of any series may be made to mature and become payable at different times from those of any other series; provided, that the maturity dates of each separate series shall comply with the provisions of this section.
Ca. Water Code § 12936