In cases where it is found that a meter has ceased to
register or has registered inaccurately and it cannot be determined by reasonable
test the percentage of inaccuracy, an estimated bill for the billing period
may be rendered the customer. This estimated bill will be based upon the amount
of water consumed in the corresponding period in prior years, except where
it appears that there has been a change in the occupancy of the premises or
in the use of water, in which case an equitable adjustment will be made by
the Town.