Precautionary water boil advisory lifted after two weekend water line breaks in Grayslake

Two water transmission line breaks over the weekend in Grayslake resulted in precautionary boil advisories, including for Grayslake North High School, that were lifted Tuesday morning.

Residential and commercial customers and others affected in the northwest part of the village had been advised to take precautions to protect themselves from consuming potentially contaminated water.

As of 8:30 a.m. Tuesday, the testing period was complete and a preliminary boil advisory lifted, customers were told.

“This was a complicated event as there were two separate breaks and two separate service interruptions,” explained Chase Muscato, deputy village manager.

The first break and service interruption occurred Saturday afternoon and ended later that day with a boil advisory. The second break and interruption happened Sunday morning and resulted in a boil advisory for the affected area, he added.

As a result, service interruptions and instances of low water pressure occurred in various locations in the northwest part of the village.

Residents, he added, received numerous notifications via robocall, Facebook postings and website updates.

On Sunday evening, Grayslake Community High School District 127 also informed families, students and staff of a boil advisory issued by the village for three subdivisions including the Grayslake North campus, Superintendent Mikkel Storaasli said Tuesday.

Contrary to reports of “limited facilities” Grayslake North was in regular session Monday and maintained access to functional restrooms and sanitary facilities throughout the boil order, he added.

The district followed safety protocols outlined by the Lake County Health Department and Illinois Department of Public Health, Storaasli said.

Bottled water was distributed to all students and staff, drinking fountains shut off and cafeteria operations adjusted to eliminate any reliance on the building's tap water, according to Storaasli.

Tap water was available to flush toilets and hand-washing sanitizer was provided.

Both lines were promptly repaired and services restored after repairs were made, Muscato said.