Cal. Water Code § 75939

From and after the date of such certificate, the area or areas named therein shall be deemed added to, and shall form a part of, said district, and the taxable property therein shall be subject to taxation thereafter for the purposes of said district, including the payment of bonds and other obligations of such district at the time authorized or outstanding, and the board of the district shall be empowered to do all things necessary to enforce and make effective the terms and conditions of annexation fixed as hereinabove authorized.