“Operator” means the person or persons operating a water-producing facility; the owner thereof shall be conclusively presumed to be such operator unless satisfactory showing be made to the board of directors of the replenishment district that such water-producing facility actually is operated by some other person or persons. “Operator” shall mean any “person” mentioned in Section 60011 of this act who is operating a water-producing facility, it being the purpose of this act to include any such person within the provisions hereof.