The connection charges for additions to existing residential facility or parcels shall be one hundred sixty-five dollars per additional fixture unit and applied to the sum of existing and proposed fixture units in excess of eighteen fixture units in general, or twelve fixture units for senior housing connected under the terms of this chapter. The connection charge for expansion for use by existing commercial or industrial facilities or parcels shall be twelve dollars per additional gallon per day discharge with no minimum charge. (Ord. 98 §3, 1999; Ord. 58 §1, 1987; Ord. 52 §1, 1986; Ord. 32 §1, 1981; Ord. 18 §1, 1977; Ord. 4 §2.3, 1973)