Public Utilities Code § 27300
ARTICLE 3. Exclusion of Territory Within or Without City
In the event that a majority of the votes cast at the election are in favor of the exclusion, the board, upon completion of the canvass, shall make an order excluding the area from the district. In the event that a majority of the votes cast at the election are opposed to the exclusion, the measure fails and no proceedings for exclusion of the area may be subsequently initiated within one year.