The increase is aimed at paying for more than $500 million worth of federally mandated sewer improvements. Most of the $500 million would be spent on separating the city's sanitary sewers from the storm sewers.
Several years ago the EPA filed suit against Evansville claiming the combined sewers were a violation of the Clean Water Act.
The sewer fee increase varies depending size and class of user, but officials say the average residential customer would see rates increase of 32% in 2014, another 8% in 2015, and an additional 18% in 2016.
The Evansville City Council must vote on the increase before it is official. That vote will likely come September 23.