UPDATE: At 2 p.m., Thursday, a water supply alert was issued for communities on Calgary's water supply including Airdrie, Strathmore, and Chestermere.

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On Thursday, June 6, an Alberta Emergency Alert was issued because of a water main break.

The water main break is along 16 Avenue NW and has impacted the city's water supply.

Supply levels have reached a critical state.

The Alert is in effect for the City of Calgary until further notice.

Residents and businesses are asked not to use any water.

Do not shower or bath or wash dishes or run appliances that use water.