Some Michigan residents are under a boil water advisory after a leak was discovered in a major waterway that serves the Detroit area.
The Great Lakes Water Authority said it discovered a break early Saturday at a 10-foot water transmission main that distributes drinking water from its Lake Huron water treatment facility.
Out of an “abundance of caution”, the water authority issued a precautionary boil water advisory that initially covered 23 communities The waters, serviced by the main, represent an estimated 935,000 people, a statement said.
After reviewing the water pressure data, the water authority later withdrew the advisory for 11 communities and added one, with 13 communities now covered as of Saturday afternoon. The affected area affects approximately 288,000 people.
The water authority said businesses in Greenwood and Tamarind townships are also potentially affected.
The Water Authority listed the city of Flint among the initial 23 affected communities. But city officials in Flint Told They moved to a secondary water supply line after an emergency warning from the Great Lakes Water Authority, which is its primary water source. Officials said the city’s water quality is unaffected and residents do not need to boil water.
Great Lakes Water Authority personnel were working to isolate the leak—which was identified in Port Huron, about a mile west of the Huron Lake Water Treatment Facility—to begin repair work.
“Once the leak is isolated, crews will begin opening emergency connections to other mains in the system to restore some flow to the affected communities,” the authority said.
The water authority is also probing the cause of the leak.
Officials warned that low water pressure in the water system could lead to bacterial infection. As a precaution, affected residents are urged to boil water for at least one minute before drinking, or to use bottled or disinfected water until further notice.
The water authority said that once the sampling shows that the water is safe to drink, the boiling water advisory will be lifted.
It is unclear how long it will take to repair the water main brake.