Cal. Pub. Util. Code § 13206

Upon receiving a petition with the certificate of the secretary stating that it contains the required number of signatures, the board shall formulate for submission to the voters of the district at a special bond election called for that purpose the proposition of incurring a bonded indebtedness for the purposes set forth in the petition. In its discretion the board may defer the calling of the election until the next general election to be held in the district in order to consolidate them.