Ottawa Guards Against Sewer Overflows

A new tunnel project will give Canada’s capital city greater capacity for preventing CSOs.
Ottawa Guards Against Sewer Overflows
Ottawa’s Kent Street Outfall drains along the Ottawa River Pathway, with the Canadian Parliament buildings in the background. (Photography by Howard Whiting)

Some projects protect waterways. Some preserve a city and nation’s history.

As the capital city of Canada, Ottawa will play a central role in the country’s 150th anniversary this year. It’s fitting that the city is also ramping up its efforts to knock out combined sewer...

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