Cal. Health and Safety Code § 37646

Any holder of bonds issued under the provisions of this part or any of the coupons appertaining thereto, and the trustee or trustees appointed pursuant to any resolution authorizing the issuance of such bonds, except to the extent the rights thereof may be restricted by the resolution authorizing the issuance of the bonds, may, either at law or in equity, by suit, action, mandamus, or other proceedings, protect or enforce any and all rights specified in the laws of the state or in such resolution, and may enforce and compel the performance of all duties required by this part or by such resolution to be performed by the local agency or by any officer, employee, or agent thereof, including the fixing, charging, and collecting of rates, fees, interest, and charges authorized and required by the provisions of such resolution to be fixed, established, and collected.