K.S.A. 19-2765a

The revenue derived from the charges for the use of the sewage disposal system shall be deposited in the office of the county treasurer in an account known as (name of district) improvement district sewage disposal fund and is not to be paid out except for the purpose of operating, maintaining and renewing the sewage disposal system and the payment of the salaries of employees engaged in operating said sewage disposal system: Provided, At any time there may be a surplus in such fund it may be transferred to the general operating fund of the district semi-annually, upon resolution of the board of directors.