More than 130,000 residents in southeast Michigan are under a boil water advisory after a leak was discovered in a major water main early Saturday, according to the Great Lakes Water Authority.

The break was discovered on a 10-foot water transmission main that distributes drinking water from the Lake Huron Water Treatment Facility, affecting around 935,000 people. The advisory will be in effect for the counties of Amount, Bruce Township, Burtchville Township, Imlay City, Rochester, Shelby Township, and Washington Township, which are located near Detroit.

Gov. Gretchen Whitmer declared a state of emergency for the counties.

"We are drawing on every resource we have and taking every action necessary to get impacted families the help they need," Whitmer said in a statement. "On Saturday, I activated the State Emergency Operations Center to coordinate our response efforts, and with today's state of emergency declaration, we are ensuring that state resources will be available as long as the impacted communities need them. In times of crisis, Michiganders stand together. We will do what it takes to get through this."

Some water pressure was restored to the communities and the repairs are set to begin, the GLWA noted in an update on Sunday.

The GLWA expects it would take roughly two weeks for the pipeline to return to service.

"GLWA understands the real-life impact that this water main break is having on the hundreds of thousands of people in the affected communities and we truly appreciate their patience and understanding as we work to implement the necessary repairs," CEO Suzanne Coffey said Sunday.

Boiling water kills bacterial contamination. The communities are advised that boiled, bottled or disinfected water should be used for drinking, ice, washing dishes, brushing teeth and preparing food.