The town is roughly a year behind on its upgrades to its sewer system, a project that when completed would improve the water quality in the Norwalk River. The project cost has grown 15 percent to $57.1 million due to inflation and supply chain woes, and involves decommissioning the Route 7 treatment plant and upgrading the South Street plant. When the Route 7 plant is decommissioned, the town will go from two wastewater treatment plants to one, Marconi said. A bigger pump station will be constructed at the Route 7 site, and wastewater will be pumped from there to the South Street plant. The sewer project is with the WPCA, which is a separate authority from the town, Marconi said. The state Department of Energy and Environmental Protection told the town it would need to upgrade the Route 7 treatment plant if it were to remain in operation, Marconi said. Those improvements would cost at least $12 million to $15 million — millions more than the current project, he said.
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