All users of the city sanitary sewerage system having connections without the corporate limits of Vinita shall be charged one and one-half (11/2) times the scheduled rates as set forth in section 8-3-2 of this chapter. The city does not obligate itself to furnish sanitary sewer service to any persons whomsoever, but will furnish such service as is reasonable within its financial ability to do so. (1986 Code § 18-20)