Mercer Island School District cancels Monday classes; boil water advisory remains in effect

MERCER ISLAND -- The city of Mercer Island is advising all residents to boil their water before drinking after routine tests came back showing the presence of E. coli.

On Saturday, Public Health - Seattle and King County ordered all food establishments to "suspend operations" until the boil water advisory is lifted.

The Mercer Island School District announced Sunday that all classes and activities on Monday, September 29th are canceled.

Seattle Public Utilities, the city's water provider, routinely collects 18 samples each month from the Mercer Island water distribution system. Test samples collected on September 26th came back the next day showing the presence of E. coli -- indicating the water may be unsafe to drink, officials said.

Here's information from the city of Mercer Island: