California Code, Water Code - WAT § 75954

Upon the canvassing of the votes cast in the election, if it appears that a majority of all votes cast are in favor of the annexation petition, the board of the petitioning district shall, within 10 days after the canvass of the vote, forward to the board of the annexing district a certified copy of the annexation petition, together with a certificate that the petition has been submitted to the electors of the petitioning district and adopted by a majority of those voting at the election.