Health officials are asking residents of the Village of Glencoe to boil their water after a water main break may have allowed contaminated water to enter the municipal water supply.
The water is unsafe to drink, a spokesperson at the Middlesex-London Health Unit told CBC News Monday.
The boil water advisory applies to all water being used for drinking, food preparation or any other human consumption.
"The community shouldn’t be using tap water until the advisory is lifted," said Fatih Sekercioglu, Environmental Health Manager with the Middlesex-London Health Unit.
He said it’s important the water is brought to a rolling boil before using it to make everything from ice cubes to a cup of coffee.
Sekercioglu said showering is not harmful so long as the water is not being consumed.
The advisory will likely be in effect for the next couple of days.

According to Mayor Ronald Parks’ wife, the city of Rantoul, Kansas is under a boil water advisory.
There has been a major water main break, which is under repair right now.
The advisory will remain in effect for the next day or two.
KCTV5 News will update when the water is safe to drink without boiling again.
Copyright 2018 KCTV (Meredith Corp.) All rights reserved.
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Update 4:55 p.m., July 23: A boil water advisory has been issued for some Lynchburg residents due to a broken water main valve on Polk Street.
Failure to follow this advisory could result in stomach or intestinal illness, according to a news release from water resources.
Lynchburg Department of Water Resources advises residents use boiled or bottled water for drinking, beverage and food preparation, and making ice until further notice.
Boiling kills bacteria and other organisms in the water.
Bring all tap water to a rolling boil, boil for one minute, and let cool before using, or use bottled water.
An alternative method of water purification is to use liquid household bleach containing a hypochlorite solution of a least 5.25 percent to disinfect water.
Public health officials recommend adding eight drops of bleach (1/4 teaspoon), to each gallon of water.
Water purification tablets may also be used by following the manufacturer’s instructions.
Water resources anticipates resolving the problem within 48 hours.
Once water is restored, we’ll issue a Boiled Water Advisory #LYH #LynchburgVA pic.twitter.com/wF0Yu79sew — Lynchburg Water (@LynchburgH20) July 23, 2018 Water service is out in part of the the Fifth Street area of Lynchburg due to a broken water main valve.

More than 4,600 customers in Pittsburgh’s North Side affected by a “flush and boil” water order this week likely will be able to resume consuming their household water as usual by Thursday, officials said.
The precautionary order remained in place Wednesday while water quality officials waited on the results from samples collected the day before, PWSA spokeswoman Mora McLaughlin told the Tribune-Review.
“We have to complete two consecutive rounds of testing to confirm to residents and our regulators that there is no contaminant issue,” McLaughlin said.
Officials said they issued the order “out of an abundance of caution” to ensure the area’s water was safe following an hours-long drop in pressure caused by the main break.
The line that split was 97 years old.
The order calls on affected customers first to flush water by letting it run from a faucet for at least 60 seconds to eradicate any loose particulates from lead pipes.
PWSA customers also can access a water buffalo stationed at Brighton Road and Woods Run Avenue.
Symptoms caused by bacteria in drinking water can include diarrhea, cramps, nausea and headaches.
Natasha Lindstrom is a Tribune-Review staff writer.
You can contact Natasha at 412-380-8514, nlindstrom@tribweb.com or via Twitter @NewsNatasha.

A boil advisory is in effect for a portion of Surf City after an unexpected water service interruption last Wednesday night.
According to the Surf City Police Department Facebook page, crews were working on water lines near Atkinson Point Road.
A representative with Surf City Utilities said water service has been restored but a 48-hour boil advisory is in effect for the island portion of Surf City and a portion of the mainland.
Stay with this story as we get further details.
Copyright 2018 WECT.
All rights reserved.

DALLAS, N.C. – Officials are advising people in the town of Dallas to boil their water after a treatment failure was detected.
Officials with public works said the treatment technique failure was detected in samples collected from the water system serving the town.
They recommend customers boil their water before any use, including drinking, making ice, brushing teeth, washing dishes and food preparation.
Officials said boiling for one minute should kill any disease-causing organisms that may be in the water.
They’re advising people to continue boiling their water until more testing can confirm the treatment technique has been fixed.
Read more top trending stories on wsoctv.com: © 2018 Cox Media Group.

MOUNT GILEAD — The boil advisory has been lifted as of noon Thursday, according to village administrator Dan Rogers.
Please contact the Mount Gilead Water treatment plant for information at 419-946-1871.

Trenton Municipal Utilities has extended a boil water advisory following a positive filiform sample for a new water main tie in.
The new advisory began at noon on Wednesday, July 25 and will continue through 6 p.m. on Thursday, unless otherwise reissued.
The area affected includes Lincoln Street from 17th Street to the end of Lincoln.

Chief Harley Chappell signed an agreement this week with the City of Surrey at a council meeting.
Now that a deal is in place with the city, Chappell is confident the SFN can proceed with the substantial infrastructure upgrades that are needed.
"My whole life, our community has been struggling for basic necessities of potable water and sewer," he said.
‘Its a historic moment’ The SFN currently gets its water from White Rock, but its deal with the municipality expires at the end of 2019.
"No one in this day and age should be without potable water," said Mayor Linda Hepner.
"Mabel has been waiting her whole adult life for this to happen," Chappell said.
Councillor Tom Gill, who was part of negotiations with the city, says the city had a rocky relationship with the SFN in the past.
He says it was an emotional moment to see Charles in attendance when the deal was signed.
Chappell says a fire would be catastrophic to the community.
Chappell says once the infrastructure is in place, they will be able to install fire hydrants.

If you live in Vesper, which is northwest of Wisconsin Rapids, don’t drink the water, even when it comes back on.
There was a water main break Tuesday, which drained the village’s water tower.
That should be repaired by Wednesday morning, except to about 5-homes closest to the break.
But even after the water comes back on, the village clerk says you shouldn’t drink it without boiling it, until they can do more testing to make sure it’s safe to drink.
It’s okay to use it for things like showering and laundry.
They don’t know what caused the break.
It affected 235 customers.