Vaudreuil-Dorion Water Hardness & Quality Report (2026)
Water Hardness
~0–59 mg/L
Softestimated · not lab-verified
Source
river
pH Level
7
neutral = 7.0
Lead
0.005 mg/L
✓ Below action level
TDS
33.8 mg/L
Est. Daily Cost
$0.08
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 Vaudreuil-Dorion, your appliances are currently losing 4% efficiency due to mineral buildup.
| Appliance | In Vaudreuil-Dorion | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 8.2 yrs | 8.5 yrs | -4% |
| Washing Machine | 11.5 yrs | 12 yrs | -4% |
| Water Heater | 14.4 yrs | 15 yrs | -4% |
Regional Water Comparison
How Vaudreuil-Dorion compares to its nearest neighbours
| City | Hardness | Mineralization | Risk |
|---|---|---|---|
| ▶ Vaudreuil-Dorion, Quebec | ≈ 0–59 mg/L | Low | 🟢 Soft |
| Pincourt, Quebec | 79.5 mg/L | Medium | 🟡 Moderately Hard |
| Saint-Lazare, Quebec | ≈ 120–179 mg/L | High | 🟠 Hard |
| Pierrefonds, Quebec | ≈ 60–120 mg/L | Medium | 🟡 Moderately Hard |
| L'Île-Bizard–Sainte-Geneviève, Quebec | ≈ 60–120 mg/L | Medium | 🟡 Moderately Hard |
National Benchmark
How Vaudreuil-Dorion compares to the Canada average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Vaudreuil-Dorion | ≈ 0–59 mg/L | 🟢 None |
| Canada National Avg | 140 mg/L | 🟠 Moderate |
| Vancouver Top Rated | 3 mg/L | 🟢 None |
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What Makes Vaudreuil-Dorion's Water Unique?
Local geology and source profile
The City of Vaudreuil-Dorion manages the local water supply, serving residents of Vaudreuil-Dorion itself, as well as Vaudreuil-sur-le-Lac and L'Île-Cadieux. The main water source is the Ottawa River, with its surface water undergoing treatment at a dedicated municipal filtration plant. Supplementing this is a secondary supply drawn from seven groundwater wells located in the Dorion area. These wells provide water that is disinfected, softened, and treated with a corrosion inhibitor before being distributed via a water tower situated near Place Dumont.
The Ottawa River watershed primarily drains the Canadian Shield, an area known for its Precambrian granitic and metamorphic bedrock. This geological makeup contains few carbonate minerals. The groundwater in the Dorion sector also reflects this underlying geology. Consequently, the region's water is naturally soft, containing very little dissolved calcium and magnesium. This characteristic helps prevent the scale and corrosion problems often encountered in areas with harder water supplies.
Homeowners in Vaudreuil-Dorion will notice minimal limescale buildup within their pipes and appliances thanks to the soft water. Soap performs exceptionally well, and there are fewer maintenance demands on appliances like water heaters and dishwashers. Installing a water softener isn't necessary here and wouldn't offer any real advantages. This soft supply is excellent for laundry, general cleaning, and personal hygiene, as it avoids the mineral deposits typically associated with harder water sources. The utility does apply additional softening treatment and a corrosion inhibitor to the groundwater to further enhance its quality.
Geology & Source: Ottawa River watershed Precambrian Canadian Shield bedrock and Paleozoic sedimentary formations; granitic and metamorphic geology produces low hardness
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