Marina Four

Toronto, Ontario

Marina Four is a well-protected slip that sits between Rees St. and Lower Simcoe St., right in the heart of the Harbourfront Centre. It is adjacent to the Concert Stage, and under the Amsterdam pedestrian bridge.

A combined sewer outfall is located in the northeast corner of the marina. Lake Ontario Waterkeeper monitors this location on a weekly basis, not only because of the pipe but also due to the many boaters that take residence in this Marina. 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 September 27th, 2018. 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

Marina Four is sampled from May 25th to September 27th

SOURCE INFORMATION

Swim Drink Fish staff, interns, and volunteers monitor recreational water quality at the Toronto Inner Harbour during the summer months. The standards followed are Ontario’s Provincial Water Quality Objectives, set by the Ministry of Environment and Climate Change at 100 E.coli per 100 millilitres of water.

Water is sampled for E. coli and Total coliform at all sites. We sample twice a week, on Tuesdays and Thursdays from the end of May to September 30th, 2018. Results are available 24 hours after samples are collected, on Wednesday and Friday afternoons.

Beaches 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 or combined sewer outfall.

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 website and apps.

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

WATER QUALITY GRAPH

Marina Four

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 September 27th, 2018. 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:   

Marina Four is a well-protected slip that sits between Rees St. and Lower Simcoe St., right in the heart of the Harbourfront Centre. It is adjacent to the Concert Stage, and under the Amsterdam pedestrian bridge.

A combined sewer outfall is located in the northeast corner of the marina. Lake Ontario Waterkeeper monitors this location on a weekly basis, not only because of the pipe but also due to the many boaters that take residence in this Marina. Six different sites are sampled in this slip, and the geomean of those six sites determine the water quality.

MONITORING FREQUENCY

Marina Four is sampled from May 25th to September 27th

SOURCE INFORMATION

Swim Drink Fish staff, interns, and volunteers monitor recreational water quality at the Toronto Inner Harbour during the summer months. The standards followed are Ontario’s Provincial Water Quality Objectives, set by the Ministry of Environment and Climate Change at 100 E.coli per 100 millilitres of water.

Water is sampled for E. coli and Total coliform at all sites. We sample twice a week, on Tuesdays and Thursdays from the end of May to September 30th, 2018. Results are available 24 hours after samples are collected, on Wednesday and Friday afternoons.

Beaches 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 or combined sewer outfall.

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 website and apps.

To see a full sample results tables visit the Waterkeeper.ca 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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