Bathurst Quay

Toronto, Ontario

Also known as Portland Slip, Bathurst Quay lies at the base of Bathurst Street, just west of Marina Quay West. On the west side of the slip sits the Canada Malting Silos, an old mill that used to take in and store grain. The silos are no longer in service and have been designated a Heritage Site, leaving the slip primarily as a location for larger boats to dock.

While sampling various locations in the summer of 2016, Lake Ontario Waterkeeper discovered extraordinarily high levels of E. coli at Bathurst Quay. We have now added this location to our weekly sampling program in efforts to collect more data and get a better understanding of the slip. Six different sites are sampled in this slip, and the geomean of those six sites determine the water quality.

WATER QUALITY
  • Met water quality standards less than 60% of the time
  • Historical Status
  • This status is based on the latest sample, taken on . Lake Ontario Waterkeeper updates the status of this beach as soon as test results become available. These results were posted to Swim Guide on at
For water quality icon legend, click:   
MONITORING FREQUENCY

Bathurst Quay is sampled weekly from May 1st to September 30th

SOURCE INFORMATION

Lake Ontario Waterkeeper staff, interns and volunteers monitor freshwater quality at the Toronto Inner Harbour year round, even outside of summer months. According to the province’s Beach Management Protocol, official sampling season starts June 1st and ends September 30th. This coincides with the official swim season in Ontario.

Samples are collected on a weekly basis, every Wednesday morning. Water is sampled for E. coli and Total coliform at all sites. Beaches in Ontario are posted when the geometric mean of 5 samples collected within a given swimming area and within a 30-day period exceeds 100 E.coli / 100 ml of water. A Ministry of the Environment procedure says that a clean beach meets water quality criteria at least 95% of the swimming season, even if it is near a sewage pipe.

Test results are expressed as Most Probable Number (MPN) of E.coli cfu (colony forming units) per 100 ml by using the IDEXX Quanti-Tray/2000 MPN Table.

A beach is marked Green when geometric mean of 5 samples results are equal or below 100 E.coli / 100 ML water.

A beach is marked Red when the geometric mean concentration (minimum of five samples) is equal to or above 100 E.coli / 100 ML water, according to Ontario’s water quality guidelines.

A beach is marked Grey when there are no current results or there is no available information.

Results are posted as soon as lab results are available. Results will be communicated through the swim guide app.

To see a full sample results tables visit the Lake Ontario Waterkeeper website. Results are also available by email at contact@theswimguide.org or by calling The Swim Guide +1 (416) 861-1237.

WATER QUALITY GRAPH

Bathurst Quay

Toronto, Ontario

WATER QUALITY
  • Met water quality standards less than 60% of the time
  • Historical Status
  • This status is based on the latest sample, taken on . Lake Ontario Waterkeeper updates the status of this beach as soon as test results become available. These results were posted to Swim Guide on at
For water quality icon legend, click:   

Also known as Portland Slip, Bathurst Quay lies at the base of Bathurst Street, just west of Marina Quay West. On the west side of the slip sits the Canada Malting Silos, an old mill that used to take in and store grain. The silos are no longer in service and have been designated a Heritage Site, leaving the slip primarily as a location for larger boats to dock.

While sampling various locations in the summer of 2016, Lake Ontario Waterkeeper discovered extraordinarily high levels of E. coli at Bathurst Quay. We have now added this location to our weekly sampling program in efforts to collect more data and get a better understanding of the slip. Six different sites are sampled in this slip, and the geomean of those six sites determine the water quality.

MONITORING FREQUENCY

Bathurst Quay is sampled weekly from May 1st to September 30th

SOURCE INFORMATION

Lake Ontario Waterkeeper staff, interns and volunteers monitor freshwater quality at the Toronto Inner Harbour year round, even outside of summer months. According to the province’s Beach Management Protocol, official sampling season starts June 1st and ends September 30th. This coincides with the official swim season in Ontario.

Samples are collected on a weekly basis, every Wednesday morning. Water is sampled for E. coli and Total coliform at all sites. Beaches in Ontario are posted when the geometric mean of 5 samples collected within a given swimming area and within a 30-day period exceeds 100 E.coli / 100 ml of water. A Ministry of the Environment procedure says that a clean beach meets water quality criteria at least 95% of the swimming season, even if it is near a sewage pipe.

Test results are expressed as Most Probable Number (MPN) of E.coli cfu (colony forming units) per 100 ml by using the IDEXX Quanti-Tray/2000 MPN Table.

A beach is marked Green when geometric mean of 5 samples results are equal or below 100 E.coli / 100 ML water.

A beach is marked Red when the geometric mean concentration (minimum of five samples) is equal to or above 100 E.coli / 100 ML water, according to Ontario’s water quality guidelines.

A beach is marked Grey when there are no current results or there is no available information.

Results are posted as soon as lab results are available. Results will be communicated through the swim guide app.

To see a full sample results tables visit the Lake Ontario Waterkeeper website. Results are also available by email at contact@theswimguide.org or by calling The Swim Guide +1 (416) 861-1237.

WATER QUALITY GRAPH



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