Calgary residents have been asked to conserve water after a major water main break in Calgary's northwest.

This morning, at 6:36, an Alberta Emergency Alert was sent out, alerting residents that The City of Calgary had issued a critical water supply alert.

"A water main break along 16 Avenue Northwest has impacted the city's water supply. Supply levels have reached a critical state, affecting the city's ability to provide water to communities and ensure adequate water is available to support emergency fire suppression," the alert stated.

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

The break happened in the Bowness area last night. 

A boil water advisory is in place for the community of Bowness, along with mandatory outdoor and indoor water restrictions.

Traffic is also impacted in that area.