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MMSD Confirms Massive Blockage in Jones Island Overflow Pipe

The clog could have worsened Bay View basement backups, prompting an emergency cleanup and storm modeling.

Overview

  • MMSD confirmed Wednesday that crews found tons of tree debris and street trash fully blocking a submerged overflow pipe at the south end of Jones Island.
  • Emergency clearing began immediately and is expected to take at least two weeks as crews excavate access points, load trucks, and remove the volume of debris.
  • The district is running storm models for the August 2025 and April 2026 events to determine how much the blockage increased local sewer backups.
  • Alderwoman Marina Dimitrijevic has demanded a public timeline and restitution for Bay View residents, while MMSD says the submerged pipe was its responsibility and has not committed to payments.
  • Officials say lower Lake Michigan levels likely helped draw debris into the underwater outfall, and MMSD plans to install a protective flap and other fixes while Veolia faces a separate third-party audit after advocacy group allegations.