This is an Alberta Emergency Alert. The City of Calgary has issued a Water Supply alert. A feeder main break along 16 Avenue Northwest has impacted the city’s water supply. Supply levels remain in a critical state, affecting the city’s ability to provide water to communities and ensure adequate water is available for firefighting. Area: (This alert is in effect for all communities of Calgary’s water supply, including Airdrie, Strathmore, Tsuu T’ina Nation and Chestermere.)