Water loss as used herein shall be that portion of water usage as read on the water meter over and beyond an established average usage. Water loss shall be subject to the following conditions:
(A) No such loss had been accommodated within the previous eighteen (18) months; and
(B) The city meter reader has read the meter within the previous seven (7) months; and
(C) The water user affirms that the water loss was actually unknown to him and files with the city clerk a notarized document to that effect; and
(D) The water loss is at least equal to twice the average usage as determined by the records of the previous usage; and
(E) The rate for water loss shall be as shown in schedule 12, section 8-4-23 of this chapter. This rate does not apply to water used during winter months to prevent freeze up of water lines. (1977 Code)