The Commission will from time to time, after public notice and hearing, make, amend and revise a schedule of water charges. Until changed, the charge for water shall be as follows:
(a) $80 per million gallons for consumptive use; and
(b) $.80 per million gallons for nonconsumptive use. [42 FR 13544, Mar. 11, 1977, as amended at 43 FR 56655, Dec. 4, 1978; 76 FR 10234, Feb. 24, 2011]