All revenue of the system from every source shall be designated and accounted for as a separate accounting fund known as the Sewer Revenue Fund of the city. Money in this revenue fund is required to be set aside each month into each of the accounts or funds created in this subchapter. These accounts together with the monthly amounts to be credited thereto are respectively set out hereinafter in the order in which the credits are to be made. All credits shall be as of the last business day of each month and shall include all receipts to the end of the immediately preceding month.
(A) Operating, maintenance and billing account. This account shall be credited with all revenues received from the operation of the sewer system. Expenses for operations, maintenance and billing shall be paid from this account.
(B) Sewer Construction Fund. A Sewer Construction Fund is hereby established. A deposit shall be made to this fund from the Sewer Revenue Fund each month. The amount of the deposit may be raised by resolution of the Council. Money in this fund shall first be used to provide an adequate allowance for depreciation, the amount thereof to be determined from time to time by the Council, then for extraordinary repairs or replacements or for improvements and extensions to the system. At any time the balance of the Sewer Construction Fund may be transferred to other city accounts and used for any lawful city purpose by resolution of the Council.
(1999 Code, § 99.10)