An engineering firm has recommended Owensboro Municipal Utilities shut down the aging “Plant A” water treatment plant on East Fourth Street and expand the much newer Cavin Water Plant. OMU officials say the old plant has been having filter issues and is unable to meet customer’s water needs. The engineering firm recommends OMU spend around $47-million to expand the plant. If the commission votes in favor of the recommendation in July, the average water customer bill will go up five dollars a month to pay for the project. No action was taken on the recommendation last night. That is expected at next month’s utility commission meeting.