Cal. Pub. Util. Code § 30200

All powers, privileges and duties vested in or imposed upon the district shall be exercised and performed by and through a board of directors; provided, however, that the exercise of any and all executive, administrative, and ministerial power may be delegated and redelegated by the board of directors to any of the offices and officers created pursuant to this part or created by the board of directors acting pursuant to this part.