Water Hardness In Montreal Quebec
The city of Montreal publishes annual drinking water reports for all of the drinking water treatment facilities in the region. The chart below shows the water hardness reported for each of these regional facilities and the neighbourhoods supplied by each. Note that with the exception of the Montreal / Mount-Royal / West Montreal data, all other hardness data on this chart has been calculated by looking at Calcium and Magnesium concentrations as water hardness was not directly tested or reported for these regions.
| Regions Served | Water Hardness (GPG) |
| Pointe-Claire, Dollard Des Ormeaux, Beaconsfield, Kirkland, Baie D'Urfée | 3.8 |
| Pierrefonds, Roxboro, Dollard Des Ormeaux, Senneville, Sainter-Anne-de-Bellevue | 3.0 |
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