Once a year credit for sewer charges on water used to top off a pool may be given (4,000 gallon maximum sewer credit). Read the meter before and after filling the pool: call these readings, along with pool dimensions and approximate depth, in to the Division of Utility Billing office at 419-897-7125. The next bill will have the sewer charge reduced by the amount of consumption used to fill the pool; maximum of 4,000 gallon per year sewer credit.