FARMINGTON HILLS, Mich. (AP) — The Latest on the effects of a water main break in suburban Detroit (all times local):

6:55 p.m.

Officials say a water main break in suburban Detroit has affected more than 300,000 people.

A fact sheet distributed by the Great Lakes Water Authority on Tuesday afternoon cites Oakland County officials in saying nearly 305,000 county residents that have been impacted by the break of a 48-inch (122-centimeter) diameter pipe in Farmington Hills. It said 51,000 had no water at that time.

The break Monday night prompted a boil water advisory for several communities.

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9:45 a.m.

Officials say the earliest that a boil water advisory could be lifted for several suburban Detroit communities is Friday evening.

The Great Lakes Water Authority gave the update Tuesday on Monday evening's break of a 48-inch (122-centimeter) diameter pipe in Farmington Hills that serves customers in western portions of Oakland County.

The water authority says it's working with community water departments to isolate water systems from the damaged portion of main in order to begin repairs. Officials say they expect to have a replacement piece of pipe installed by Wednesday night and water quality tests will take place afterward.

The water authority says, however, the timeline could change.

Wixom, Walled Lake, Commerce Township and parts of Novi are expected to have low to no water pressure as repairs take place.

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9 a.m.

Two hospitals are canceling elective surgeries and procedures due to water emergency following a water main break in suburban Detroit.

Providence Park Hospital in Novi says ambulances are being rerouted on Tuesday morning away from the hospital and some patients are being transferred to Providence Hospital in Southfield.

Henry Ford West Bloomfield Hospital says in a statement on its website Tuesday that it has no water service and its clinics are closed for the day.

The break Monday night in Farmington Hills prompted a boil water advisory for several communities in the area. The Great Lakes Water Authority is working to repair the break and says it's hoping have the water main back in operation this week.

The authority says the advisory could be in effect until Thursday or Friday.

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5:45 a.m.

A water main break in suburban Detroit has prompted officials to issue a boil water advisory for about a dozen communities.

The break on Monday evening in Farmington Hills affected surrounding communities and closed a number of area schools on Tuesday. In parts of Novi, no water service was reported. Oakland County health officials were alerting people and businesses to take precautions before using water.

The affected communities include parts or all of Bloomfield Township, Commerce Township, Farmington Hills, Keego Harbor, Oakland Township, Orchard Lake, Novi, Novi Township, Rochester Hills, Wixom, West Bloomfield Township and Walled Lake.

The Great Lakes Water Authority is investigating the cause of the break and crews are working to resolve the problem. People also may see low water pressure or discoloration.

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Online:

http://www.oakgov.com/health