Crews are installing two odor control facilities that will be completed in November.
One is currently being installed at the intersection of Neil Avenue and Vine Street.
Large beds are being filled with lava rock and pine bark. Live bacteria will be added to help filter the air.
"We want people to live, work and play downtown. So, when they come downtown, obviously they don't want to be smelling sewer gas. This is a very important project and we believe it will help enhance the quality of life downtown," said George Zonders of the Columbus Public Utilities Department.
A second facility is being built at the intersection of Short and Liberty streets.
Both odor control facilities are part of a larger project to reduce river sewage overflow.
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