Mayor Brian Bowman says pushing forward phosphorus reduction solutions at Winnipeg’s North End sewage treatment plant at the province’s behest could have disastrous environmental effects on the province’s waterways and create further project delays.

Manitoba’s Conservation and Climate Ministry denied the city’s request for a two-year extension to bring the plant into compliance with environmental regulations Thursday, instead forcing Winnipeg into an advisory group to develop an interim phosphorus reduction plan by the end of January, with implementation mandated for Feb. 1.

The licensing requirements would have made the city reduce phosphorus emissions at the North End plant to one mg/litre from the current 3.54 mg/litre average by Dec. 31.

The province now says the city will be out of compliance by New Year’s Day.

Winnipeg’s North End sewage treatment plant is the single-largest source of phosphorus to Lake Winnipeg, according to the Lake Winnipeg Foundation. That phosphorus causes algae blooms.

However, Bowman stressed any phosphorus reduction plan needs to be first studied to determine whether its safe.

“Without proper testing, without knowing from a science perspective and an engineering perspective… there are significant risks to the integrity of that plant, but also the integrity and quality of the water in our rivers and lakes,” Bowman said.

“A catastrophic failure means months of raw sewage flowing into the rivers and we know that that’s a risk that’s been identified by a third-party engineer.”

The city will participate in the province’s advisory group, Bowman said, and it wants to accelerate phosphorus reduction, but worries it could delay the progress the city has already made.

“We will not be supportive of any processes that will delay our progress in protecting the rivers and lakes,” Bowman said.

The city has moved ahead on the first of three upgrade phases —  $408 million in power supply and headworks facilities upgrades — but it hasn’t approved biosolid and nutrient removal projects.

Those two projects will cost $1.38 billion combined, and the city says it can’t proceed without federal and provincial dollars.

The province has yet to approve Winnipeg’s $267-million funding request and Ottawa has yet to approve a $306-million funding request from the city.

“That could have been announced yesterday and it was not,” Bowman said of the provincial funds.

If the city is forced to take on those projects without federal and provincial support, Bowman warned of major impacts on taxpayers’ pockets.

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