Officials say they are looking for ways to ease costs, which are being driven upward by debt repayment on a sewer project and the rising price of sewage treatment.
Residents complained that costs have gone up by the thousands for some customers, in large part due to a $3 million sewer replacement project completed in 2020.
Some residents say their sewer bills next year will be more expensive than their taxes. Officials have previously said they need to money to pay off an extensive infrastructure project.
The system runs through Vassalboro's East Village up Main Street and state Route 32 to Winslow's Dunbar Street, where the sewage then goes into Winslow's system.