Dollard-Des Ormeaux Water Hardness & Quality Report (2026)
Water Hardness
~60–119 mg/L
Moderately Hardestimated · not lab-verified
Source
river
pH Level
7.3
neutral = 7.0
Lead
0.003 mg/L
✓ Below action level
TDS
124.8 mg/L
Est. Daily Cost
$0.24
energy & soap waste
Source: Health Canada Water Quality · Updated 2026
0–60
mg/L
Soft
61–120
mg/L
Moderately Hard
121–180
mg/L
Hard
180+
mg/L
Very Hard
Appliance Damage Report
In Dollard-Des Ormeaux, your appliances are currently losing 12% efficiency due to mineral buildup.
| Appliance | In Dollard-Des Ormeaux | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 7.5 yrs | 8.5 yrs | -12% |
| Washing Machine | 10.6 yrs | 12 yrs | -12% |
| Water Heater | 13.2 yrs | 15 yrs | -12% |
Regional Water Comparison
How Dollard-Des Ormeaux compares to its nearest neighbours
| City | Hardness | Mineralization | Risk |
|---|---|---|---|
| ▶ Dollard-Des Ormeaux, Quebec | ≈ 60–119 mg/L | Medium | 🟡 Moderately Hard |
| Pierrefonds-Roxboro, Quebec | ≈ 60–120 mg/L | Medium | 🟡 Moderately Hard |
| Pointe-Claire, Quebec | ≈ 60–120 mg/L | Medium | 🟡 Moderately Hard |
| Kirkland, Quebec | ≈ 60–120 mg/L | Medium | 🟡 Moderately Hard |
| L'Île-Bizard–Sainte-Geneviève, Quebec | ≈ 60–120 mg/L | Medium | 🟡 Moderately Hard |
National Benchmark
How Dollard-Des Ormeaux compares to the Canada average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Dollard-Des Ormeaux | ≈ 60–119 mg/L | 🟡 Low |
| Canada National Avg | 140 mg/L | 🟠 Moderate |
| Vancouver Top Rated | 3 mg/L | 🟢 None |
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What Makes Dollard-Des Ormeaux's Water Unique?
Local geology and source profile
The drinking water for Dollard-des-Ormeaux comes from the St. Lawrence River, managed by the Service des eaux of the City of Dollard-des-Ormeaux, Québec. This raw water is treated at the Pointe-Claire Water Treatment Plant, which serves several West Island municipalities, including Dollard-des-Ormeaux, Pointe-Claire, Kirkland, Beaconsfield, and Baie-D'Urfé. The municipal system distributes treated river water across about 19 square kilometers, mostly residential areas within the Urban Agglomeration of Montréal. The water's journey begins in the St. Lawrence River watershed, flowing through southern Québec's mixed sedimentary and metamorphic terrains.
The region's geology is characterized by Ordovician limestone and dolomite formations on the St. Lawrence Platform, with some influence from the Precambrian Grenville Province. As water flows over and through these carbonate-rich rocks, it dissolves minerals like calcium and magnesium, giving the supply its moderately mineralized quality. Glacial till deposits and the river's natural flow dynamics also play a role in shaping the water's chemistry before it reaches the treatment plant.
Because the water is moderately hard, homeowners might notice scale buildup on fixtures. This can reduce the efficiency of appliances like water heaters, dishwashers, and washing machines over time, potentially shortening their lifespan. You may also see deposits in kettles and faucets. To combat spotting on glassware and soap scum, regular descaling with vinegar is a good idea. Installing a water softener is also recommended to protect your plumbing and maintain appliance longevity. The Pointe-Claire plant monitors for various contaminants, with past lead issues in older pipes prompting remediation efforts.
Geology & Source: St. Lawrence River watershed; Ordovician limestones and dolomites contribute moderate hardness
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