CA Pub Util Code Section 105302

(a)

As an alternative to the initiation of proceedings for the formation of a service zone by resolution or resolutions, a petition may be filed with the secretary of the district signed by voters equal in number to at least 25 percent of the registered voters registered within the proposed service zone as determined from the affidavits of registration. The boundaries of the proposed service zone shall be described in the petition. When the entire area of a public agency is to be included in the service zone, it may be described by name.

(b)

The petition shall declare that the public interest or necessity demands the creation of a service zone within the area of the district described in the petition. The petition may include one or more separate documents, but each document shall contain the affidavit of the party who circulated it, certifying that each name signed thereto is the true signature of the person whose name it purports to be.