Officials: Walnut Street force main limits drive Front Street backups; fixes could exceed $1 million
City staff said the wastewater force main leaving Walnut Street can move a maximum of 2,300 gallons per minute, a constraint officials say contributes to Front Street backups during heavy rain. Options under study include storage, upsizing the force main and plant expansion; estimated costs and DNR requirements complicate timing and funding.
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Kevin, a city staff member, told meeting participants the wastewater force main that runs from Walnut Street to the treatment plant “can only carry 2,300 gallons a minute,” and that limit contributes to backups on Front Street during heavy rains. He said the city is working with Cochran Engineering on options that include short-term storage (a retention tank) and upsizing the force main.
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