Beach Water Quality Results

Beach Water Quality Testing at the City of Ottawa Supervised Beaches

Water samples will be collected daily from City of Ottawa supervised beaches between June 17 and August 27, 2023 and tested for the presence of E. coli bacteria. When elevated levels of E. coli are detected in the water, it is more likely that other disease-causing organisms are also present. These organisms can result in skin, ear, throat or gastro-intestinal illnesses. 

Beach water test results 

Water test results are not available immediately as they take at least 18 hours to process in the laboratory. For this reason, swim advisories are issued based on water sample results from the previous day, as well as our knowledge of water quality at each beach in previous years and how they react to factors such as rainfall and bird activity. Ottawa Public Health will not recommend swimming at beaches if: 

  • the geometric mean of 5 water samples taken on the previous day is greater than 200 E. coli per 100mL of water (Ontario water quality standard for beach water quality);
  • there is a significant rainfall event; or
  • we are aware of a situation that could impact the water quality at a beach.

For information on the City of Ottawa Beaches visit the City of Ottawa website.

For more information on the Beach Water Quality Monitoring Program, call Ottawa Public Health at 613-580-6744 and ask to speak with a Public Health Inspector.

Swim icon Swim

Red caution symbolSwimming not recommended

  • Swim in the supervised area. Lifeguards are on duty from noon to 7 pm every day during the supervised swimming season.
  • Avoid going into water with an open wound.
  • Don't swallow the water or take it in your mouth. It is best to keep your head out of the water.
  • Shower as soon as possible after swimming and dry ears thoroughly with a towel. 
  • Wash hands carefully with soap and treated water or use alcohol-based hand rub after playing in the sand, and before preparing foods or eating.
  • As a precaution, take children to the toilet before entering the water. 

If you choose to wade into the water:

  • Avoid going into water with an open wound.
  • Don't swallow the water or take it in your mouth. It is best to keep your head out of the water.
  • Shower as soon as possible after using water.
  • Wash hands carefully with soap and treated water or use alcohol-based hand rub after playing in the sand, and before preparing foods or eating.

Tips for staying safe around lakes and rivers.

Tips to stay cool during a Heat Warning 

Dashboard in testing.

Dashboard updated daily during supervised swimming season.

Visuals in the dashboard may present conflicting information. Certain visuals will update sooner than others due to data caching on the Microsoft Power BI server.

To enter the Power BI report from the dashboard webpage using a keyboard, press Tab once after the “full screen mode” link and press Ctrl + Enter. A small box will appear in the top left corner of the report. Press Tab three times to navigate through the options and you will then be inside the report. From here you can navigate the content of the report using Tab and the other keyboard shortcuts enumerated in the Keyboard Shortcuts document.

The City of Ottawa Open Data keeps Beach water sampling data from previous years.

Having trouble viewing the report?   Try viewing the report in full screen mode. 

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