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Burlington, Vermont, is beginning a major upgrade of its wastewater treatment facilities due to aging infrastructure and environmental compliance needs. Initiated after disinfection failures in 2018, the project includes a $124 million bond for upgrades to the main treatment plant, featuring a 5.3 Membrane Degasification System.

The project is divided into multiple stages, with Stage 0 completed in July 2022 and Stage 1 underway. Future stages will consolidate service areas and upgrade additional facilities. The project aims to improve wastewater treatment capacity while adhering to phosphorus reduction obligations.