Stuff we 'flush down the toilet' ending up in Toronto Harbour, environmental group warns

An environmental group is sounding the alarm about the city's main sewage and stormwater system after finding trash like condoms, sanitary wipes and tampons floating in Toronto harbour last month.

Mark Mattson,  an environmental lawyer and the founder of Swim Drink Fish — a volunteer group working to create swimmable, drinkable, and fishable water for everyone — told CBC Toronto he went to Ontario Place to check out the quality of the water the day after a large storm on July 24.

"We [had] been getting a lot of complaints about floatables ... plastics, napkins, sanitary napkins, condoms, things people flush down the toilet," he said.

"This whole area was covered."

Mattson soon discovered that the debris had come from a pipe that occasionally dumps Toronto's combined sewage and stormwater directly into Lake Ontario. A combined sewage overflow (CSO) occurs during heavy rainfall and, in addition to trash items, the discharge can contain harmful bacteria, pathogens, heavy metals, oils, and pesticides, according to the city's website. 

The city has a handful of major projects in progress to help address the issue, but Mattson said he wants to see more communication with the public.

He pointed to Kingston, Ont. as an example. The municipality provides real-time monitoring of its pipes and informs residents when an overflow has occurred.

Letting the public in on what's happening makes the problem more visible, Mattson said. "The public's on the side of the utilities to clean up the lake. So just [give] them the information they need to help make this happen faster."

According to the city, only 20 to 25 per cent of Toronto's sewers are still on the combined system. The CSO outlet near Ontario Place is one of 94 left over from before an overhaul of Toronto's sanitation system. 

Bill Shea, the director of water distribution and collection with the City of Toronto, told CBC News the discharge in the water on July 25 was caused by a maintenance project on the Western Beaches Storage Tunnel.

This tunnel was built to collect water from CSOs to prevent it from being discharged directly into the lake, he said.

When Swim Drink Fish reported the debris in the water, the city agreed to put the maintenance project on hold until the end of swimming season. Work on the tunnel will continue during the winter months, Shea said. 

In addition to upgrades to the Western Beaches Storage Tunnel, the city is in the middle of a $3-billion project to protect the waterfront from CSOs, he said.

The project involves an eastward extension of the Western Beaches tunnel and the construction of three large sewers in the city's east end.