(70 ILCS 2405/16.8) (from Ch. 42, par. 315.8)
    Sec. 16.8. Any district issuing revenue bonds as provided by this Act shall charge rates for all services performed by the waterworks properties of the district, sufficient at all times to pay the cost of operation and maintenance, to provide an adequate depreciation fund, and to pay the principal of and interest upon all revenue bonds issued for such waterworks.
(Source: Laws 1967, p. 950.)