Section 75617 Of Article 4. Collection From California Water Code >> Division 21. >> Part 9. >> Chapter 3. >> Article 4.

. The board may, at the time of fixing the ground water charge, establish a method or methods to be used in computing the amount of water produced from a water-producing facility which is not measured by a measuring device. Such methods may be based upon any or all or a combination of the following criteria:
  (a) The size of water-producing facility discharge opening.
  (b) The area served by the water-producing facility.
  (c) The number of persons served by the water-producing facility.
  (d) The use of land served by the water-producing facility.
  (e) The crops grown on land served by the water-producing facility.
  (f) Any other criteria which may be used to determine with reasonable accuracy the amount of water produced from a water-producing facility.