Ms. Michèle Prévost at the Transport, Infrastructure and Communities Committee

On November 30th, 2017. See this statement in context.

November 30th, 2017 / 4:05 p.m.

Professor, École Polytechnique de Montréal and Industrial Research Chair, Natural Sciences and Engineering Research Council of Canada, As an Individual

Michèle Prévost

Last year, Ms. Deshommes published the results after a five-minute flush and after the water stood for 30 minutes and 6 hours. The simulation took place during one night. The differences are considerable: the concentration can be almost double.

A sample taken after a five-minute flow certainly does not detect the concentration to which users are typically exposed, as you mentioned just now.

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