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Air and Water Quality

Air quality

The Réseau de surveillance de la qualite de l'air (RSQA) of the City of Montreal operates 15 monitoring stations for the ambient air on the island of Montreal. There are no stations, however, located on the City of Dorval territory.

The pollutants mesured by these stations on a continual basis (24 hours per day) are sulfur dioxide, ozone, nitrogen dioxide, and fine particulate matter. The volatile organic compounds, total suspended particulates, particulate matters PM10, as well as organic carbonyl compounds (aldehyde and ketones) are measured on a punctual basis in certain stations, while metals are measured every 5 years at the Pointe-aux-Trembles station only.

Concentrations of pollutants mesured on a continual basis are used to calculate an air quality index , which is available in real time of the RSQA website. All of the results obtained by the stations' continuous analyzers are available on this website while the results of the punctual analyses are available in the annual reports found in the Publications section.

Check the website - French only

Air Quality Environmental Assessment Report 2017 - City of Montreal

Letter from the City of Montreal Environment Director sent to the Mayor of Dorval - October 18, 2018 - French only

Water quality

Whether you are a swimmer, a watercraft user, or simply an environmentally conscientious person, it is possible to obtain the bacteriological quality of the water that streams along the entire island of Montreal, including Dorval.

Check the interactive map of the Aquatic Environment Monitoring Network (AEMN) - French only

Thanks to the map’s analysis results, it is possible to paint a relatively accurate portrait of the quality of water along Dorval’s shores.