The City Council passed sewer rate increases with a vote of seven to two at Monday night's meeting, with Jonathan Weaver and Al Lindsey representing the dissenting votes.
That means bills will go up 32-percent next year, eight-percent the following year and 18-percent in 2016.
The hike is in response to EPA threats to fine the city if upgrades are not made to the sewer system. The EPA had originally filed a lawsuit against the city, but agreed to drop it as long as the changes are made.
Heavy rains cause sewage to overflow into storm drains, which empty into the Ohio River.