City of Hamilton discovers 26-year leak of sewage into Hamilton Harbour
Hamilton Water director says it appears a consultant put hole into combined sewage pipe in 1996
Bobby Hristova · CBC News · Posted: Nov 22, 2022 5:26 PM ET | Last Updated: 4 hours ago
A sign that tells people not to swim in the water.
The City of Hamilton says sewage has been leaking into the Hamilton Harbour since 1996. (Bobby Hristova/CBC)
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The City of Hamilton says it has just discovered sewage has been leaking into the Hamilton Harbour for 26 years because of a hole in a combined sewage pipe in the industrial sector.
It's unclear how much sewage has spilled into the harbour.
But Nick Winters, director of Hamilton Water, told reporters on Tuesday afternoon "it's going to be a big number," adding the city will publicly release the number as soon as they have it.
Carlyle Khan, general manager of public works, said Hamilton Water staff noticed something odd on security camera footage. Winters said that led to the discovery of the hole late Tuesday morning at the northeast corner of Wentworth Street North and Burlington Street East.
A preliminary investigation from staff notes they believe a consultant put the hole into the combined sewage pipe in 1996, Winters said.
"It appears the consultant involved in that work was under the impression all the sewers in that area were storm sewers and they designed a direct connection to a box culvert that leads out to Hamilton Harbour," he said.
"The situation we're describing to you today is something that shouldn't have happened."
What is impacted by the sewage spill?
City staff said the drinking water of Hamilton residents has not been affected by the newly discovered leak, but the spill will have impacted the environment of the harbour.
The outflow ends at a Hamilton Oshawa Port Authority Pier, Winters said.
Some 50 homes are tied into this pipe, but he said the water used by those homes has been going into the lake.
Hamilton asks Ontario for 1 more year to clean up Chedoke Creek spill amid Haudenosaunee dispute
Winters said staff are looking at the amount of water each home uses to find out how much sewage has ended up in the harbour.
He also said the leak should be "significantly less" sewage than the 24 billion litres of sewage that leaked into Chedoke Creek for four years — a leak which the city is still working on cleaning up.
How did the leak go unnoticed for 26 years?
The storm sewer outfall is always under water, so a sewage spill wouldn't be easy to detect and or sample water from, Winters said.
He said the storm sewer is 2½ metres wide by 2½ metres deep.
Sampling from within the sewers itself also isn't something that generally happens, Winters added, but the city launched its surface water quality program last year.
He said the Hamilton Water team was preparing t
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