After a year of deliberation, the Hannibal Board of Public Works Tuesday selected its new water filtration system.

The board voted unanimously to install a granulated activated carbon system to filter the city’s water.

The board had spent several months debating the pros and cons of the carbon and reverse osmosis systems before settling on the carbon filtration method.

The Hannibal City Council voted last fall that BPW discontinue the use of chloramines for its water disinfection.

The design, the taking of bids and the construction of the new system is expected to take about two years.

Officials expect the new system to be operational by March of 2020.