City given green light to move on to last step in feeder main repairs ...

2 days ago

Calgary

With water samples approved by AHS, city crews can move on to stabilizing the feeder main by slowly easing water back into it, a process that will take three to five days.

Calgary water update - Figure 1
Photo CBC.ca
Water samples tested by AHS met the agency's standards, officials reported on Sunday

CBC News

· Posted: Jun 30, 2024 3:14 PM EDT | Last Updated: 1 hour ago

City crews set up pumps to flush water through the feeder main on Saturday. Mayor Jyoti Gondek said the flushing of the pipe went ahead with no issues. (City of Calgary)

The flushing of Calgary's recently repaired water feeder main went ahead on Saturday with no issues, mayor Jyoti Gondek said during the Sunday update on the city's water situation.

She said monitors picked up no areas of concern during the process.

Water samples from the flushing analyzed by Alberta Health Services have met the agency's regulatory standards, Gondek said in a livestream on Sunday afternoon.

This means the city has the green light to proceed to the stabilizing stage, where workers will slowly turn on a series of pumps and valves to bring the feeder main back into the system.

Calgary water update - Figure 2
Photo CBC.ca

"I must stress again that this step is the one that involves the greatest amount of risk," said Gondek.

"We are going slowly and cautiously to ensure that turning valves and pumps back on does not create strain on the system."

A water use chart released by the City of Calgary shows that the consumption levels on Saturday, June 29, marked a 26 per cent reduction from typical usage, at 447 million litres. (City of Calgary)

Francois Bouchart, the city's director of capital priorities and investment, said the stabilization stage has a timeline of three to five days.

Also on Sunday, Gondek said city water consumption levels had fallen for the second consecutive day, with 447 million litres consumed on Saturday, down from 460 million litres on Friday. 

Calgary water update - Figure 3
Photo CBC.ca

Usage had spiked up to 500 million litres on Thursday, the highest levels since the feeder main break occurred, prompting both the mayor and city officials to issue a plea during Friday's update for Calgarians to reduce consumption.

Gondek said the Bow River Pathway has been completely reopened. The parking lot at Point McKay, north of Edworthy Park and the river near Bowness Road, has also reopened to the public.

In a release, the city said bylaw officers have issued 19 violation tickets for water misuse since restrictions were enacted. 

Regarding the fire ban, which remains in effect, bylaw officers have issued 36 written warnings, 110 verbal warnings and six violation tickets.

WATCH | City officials say they are on track to get feeder main back into water system this week:

City provides update on water main break
City officials provide an update on the major feeder main break affecting Calgary's water supply.
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