(a) Every garbage or sewer customer of the city shall be required to pay a sum which is set forth in appendix B to this code as a deposit for sewer and garbage and trash collection services.

(b) For new industrial customers whose monthly sewage charges are based upon water consumption at existing service location, the deposit fee shall be equivalent to a three-month service period for sewer and garbage, plus three months' penalty charges. monthly charges are to be computed upon the average monthly charge for the previous six-month period. For a new industrial customer at a new service location, a deposit fee shall be equivalent to the sewage rate for the estimated water consumption based upon the state department of environmental protection technical information memorandum, § 6.2.1., and the estimated garbage service multiplied by three, plus three months' penalty charges. This deposit fee may be recalculated after six months based upon actual sewage and garbage service charges. In lieu of the cash deposit required for industrial customers, the customer may post a surety bond to the city in an amount equal to the deposit.

(c) The deposit shall be paid to the city by the new customer upon occupancy.

(d) The deposit shall be returned to the depositor upon satisfaction of all outstanding balances, upon termination of the service.

(e) Any deposit pursuant to this section shall be refunded to the customer upon the satisfactory completion of 24 months service without a thirty-day delinquency.