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2h ago

Novi Water Main Break Cuts Pressure as GLWA Works to Isolate 42-Inch Line

Repairs hinge on securing the final isolation valve after six were closed overnight.

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The area affected by a Sept. 25, 2025, boil water advisory in Novi (left) and Walled Lake (right).

Overview

  • A rupture on 14 Mile Road west of M‑5 in a 42-inch Great Lakes Water Authority transmission main caused widespread pressure loss across multiple communities.
  • GLWA says six of seven valves needed to isolate the break are closed, and crews are engineering a workaround to secure the remaining valve before excavation.
  • Boil-water advisories remain in effect for Novi and Walled Lake, while Commerce Township and Wixom lifted advisories but warned of continuing low pressure.
  • Novi Public Schools and other campuses canceled classes, and residents lined up at ITC Community Sports Park and city Public Works for water distribution.
  • Businesses scaled back operations under Oakland County Health Department guidance, and 14 Mile remains closed between Welch and M‑5 during the ongoing repair effort.