Cal. Pub. Util. Code § 11930

Notwithstanding this article, until such time as the district has operated, controlled, or used works or parts of works for providing the inhabitants and public agencies within the boundaries of the district with the utility services, or any of them, specified in this division, for a period of six months, the board may or may not appoint a general manager, who during such time holds office at the pleasure of the majority of the board.