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Missouri American Water issues precautionary boil advisory for portion of St. Charles County

Missouri American Water is issuing a precautionary boil advisory via reverse-911 call for portions of Weldon Spring, Cottleville and O’Fallon in St. Charles County. See map below for exact region.

The text of the call is:

“This is a message from Missouri American Water. We are calling to tell you that we have issued a precautionary boil water advisory for a portion of Weldon Spring, Cottleville and O’Fallon that affects you. We are asking customers in the affected area to bring their water to a boil for three minutes before using it for drinking or cooking. Tap water is okay for washing and bathing.  We will take water quality samples in the area soon.  The boil water advisory will be in effect until water quality samples confirm that the water remains safe for consumption.  Boil water advisories can last 48-72 hours.  We will call you again when the boil water advisory has been lifted. For more information, please visit our website at www.missouriamwater.com or call us at 866-430-0820.”

A water main break and the associated low-pressure event are responsible for the boil advisory.

The advisory affects approximately 1,500 customers, a mix of residential and commercial. Water for these customers will need to be brought to a boil for 3 minutes before consumption, until further notice. Tap water is OK for washing, bathing and other non-consumable uses during this period.

The precautionary boil advisory is required because of regulations regarding water pressure in our system. In this instance, water pressure dropped to a level that requires we issue a precautionary boil advisory.

Boil advisories typically last 48-72 hours, though timing cannot be guaranteed.

Water quality tests will be run once the main break is repaired.

Upon conclusion of the boil advisory, customers should flush the internal plumbing in their homes by turning on a few faucets and letting the water run for a few minutes.

Customers will be notified by reverse-911 when the boil advisory is lifted. Notice will also be posted to social media and the state’s website.


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