Water Code § 21553
ARTICLE 1. Divisions and Methods of Electing Directors
The board shall order a change in the number of divisions or the method of electing directors, or both, or increase the number of directors from three to five in a district without divisions, if a petition therefor, signed by a majority of the holders of title to all of the land who are also the holders of title to a majority in value of the land, is filed in the district office at least 85 days before a general district election.