Delta 3 report flags aging wastewater plant, recommends multi-year upgrades

Nov 3, 2025

Consultant Delta 3 told the Village Board the 1983 wastewater treatment facility is undersized for modern permit limits and requires major upgrades — including new controls, headworks, UV disinfection and a new sludge tank — with a planning timeline through 2029.

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Delta 3 engineer Jordan Fure told the Village Board that Bloomington’s wastewater treatment plant — installed in 1983 — faces multiple obsolescence and regulatory challenges and requires phased upgrades over the next several years. "The current facility was installed in 1983," he said, and the plant now must meet newer DNR standards for ammonia, E. coli, PFAS, chlorides and total phosphorus that the original design did not anticipate.

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