Evansville residents may soon be paying more for sewer service, but the new rate will either be comparable or less than other cities in our area. Evansville Proposed Rate $23.67 Henderson $23.48 Chandler $40.46 Indianapolis $17.04 The Water and Sewer Utility Board has approved a 17% increase in the service cost. The increase will cost the average customer an extra $3.45 a month. The board approved the higher rates to help pay for sewer projects in the city. If the City Council approves the increase, it will go into effect on August 1.