Saint-Lazare Water Hardness & Quality Report (2026)
Water Hardness
Source
river
pH Level
7.4
neutral = 7.0
Lead
0.002 mg/L
✓ Below action level
TDS
152.8 mg/L
Est. Daily Cost
$0.22
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 Saint-Lazare, your appliances are currently losing 11% efficiency due to mineral buildup.
| Appliance | In Saint-Lazare | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 6.8 yrs | 8.5 yrs | -20% |
| Washing Machine | 10.5 yrs | 12 yrs | -13% |
| Water Heater | 12.2 yrs | 15 yrs | -19% |
Regional Water Comparison
How Saint-Lazare compares to its nearest neighbours
| City | Hardness | Mineralization | Risk |
|---|---|---|---|
| ▶ Saint-Lazare, Quebec | 84 mg/L | Medium | 🟡 Moderately Hard |
| Vaudreuil-Dorion, Quebec | 119.5 mg/L | High | 🟡 Moderately Hard |
| Salaberry-de-Valleyfield, Quebec | 104 mg/L | Medium | 🟡 Moderately Hard |
| Pincourt, Quebec | 79.5 mg/L | Medium | 🟡 Moderately Hard |
| Les Coteaux, Quebec | 69.5 mg/L | Medium | 🟡 Moderately Hard |
National Benchmark
How Saint-Lazare compares to the Canada average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Saint-Lazare | 84 mg/L | 🟡 Low |
| Canada National Avg | 141 mg/L | 🟠 Moderate |
| Vancouver Top Rated | 3 mg/L | 🟢 None |
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What Makes Saint-Lazare's Water Unique?
Local geology and source profile
Saint-Lazare's drinking water is managed by Ville de Saint-Lazare, drawing from the Ottawa River corridor or the Lake of Two Mountains (Lac des Deux Montagnes) supply system — part of the Vaudreuil-Soulanges MRC regional water infrastructure west of Montréal Island. Water undergoes coagulation, sedimentation, filtration, UV disinfection, and chloramination, meeting all Guidelines for Canadian Drinking Water Quality (GCDWQ) requirements. Hardness measures 84 mg/L (4.9 gpg) — classified as moderately hard by Health Canada, consistent with the western Montréal periphery supply corridor, softer than the south shore Montérégie communities (112 mg/L Varennes) but harder than central Montréal Island supply (65–85 mg/L).
Saint-Lazare (a large-lot residential rural community in the Vaudreuil-Soulanges corridor west of Montréal — known for its equestrian estates, hobby farms, and the Rigaud Mountain ski area nearby, attracting Montréal families seeking a semi-rural lifestyle) receives supply from the Ottawa River–Lac des Deux Montagnes system entering the Vaudreuil-Soulanges peninsula. The Ottawa River at this confluence zone carries moderate dissolved calcium from the Outaouais Lowlands limestone terrain, producing the 84 mg/L moderately hard supply consistent with the broader Vaudreuil-Soulanges water network (Vaudreuil-Dorion 115 mg/L from batch 15, harder; Saint-Lazare 84 mg/L, softer — reflecting the specific intake and distribution sub-zone characteristics).
At 84 mg/L, Saint-Lazare residents experience moderate scale deposits — cleaning every two months is adequate. Hot water tanks operate reliably at this hardness level. Ville de Saint-Lazare publishes annual water quality reports following Ministère de l'Environnement standards. Saint-Lazare's large-lot residential character, with many private well users in the community's rural estate sections, means that some residents use private well supply requiring independent testing; the municipal supply serves the denser core residential areas.
Geology & Source: Supplied by Ville de Saint-Lazare from the Ottawa River corridor via the Vaudreuil-Soulanges MRC regional supply system — the western Montréal Island periphery supply from the Ottawa–St. Lawrence confluence zone produces moderately hard water at 84 mg/L (4.9 gpg).