Saint-Hubert 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
131.5 mg/L
Est. Daily Cost
$0.20
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-Hubert, your appliances are currently losing 10% efficiency due to mineral buildup.
| Appliance | In Saint-Hubert | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 7.1 yrs | 8.5 yrs | -16% |
| Washing Machine | 10.8 yrs | 12 yrs | -10% |
| Water Heater | 12.6 yrs | 15 yrs | -16% |
Regional Water Comparison
How Saint-Hubert compares to its nearest neighbours
| City | Hardness | Mineralization | Risk |
|---|---|---|---|
| ▶ Saint-Hubert, Quebec | 75.5 mg/L | Medium | 🟡 Moderately Hard |
| Greenfield Park, Quebec | 90.5 mg/L | Medium | 🟡 Moderately Hard |
| Laflèche, Quebec | 70.5 mg/L | Medium | 🟡 Moderately Hard |
| Longueuil, Quebec | 115 mg/L | Medium | 🟡 Moderately Hard |
| Brossard, Quebec | 99.5 mg/L | Medium | 🟡 Moderately Hard |
National Benchmark
How Saint-Hubert compares to the Canada average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Saint-Hubert | 75.5 mg/L | 🟡 Low |
| Canada National Avg | 141 mg/L | 🟠 Moderate |
| Vancouver Top Rated | 3 mg/L | 🟢 None |
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What Makes Saint-Hubert's Water Unique?
Local geology and source profile
Saint-Hubert (a borough within the City of Longueuil on the South Shore of the St. Lawrence) receives its drinking water through Ville de Longueuil, part of the integrated Longueuil agglomeration supply network drawing from the St. Lawrence River via the Longueuil Water Treatment Plant. Treatment includes coagulation, sedimentation, ozonation, filtration, and chloramination, fully meeting the Guidelines for Canadian Drinking Water Quality (GCDWQ). Hardness in the Saint-Hubert distribution zone is 75.5 mg/L (4.4 gpg) — classified as moderately hard by Health Canada, consistent with the Longueuil South Shore supply and the broader Montérégie St. Lawrence water chemistry.
Saint-Hubert's supply draws from the St. Lawrence River at the Longueuil intake on the South Shore, where the river carries a blend of Precambrian Shield tributary inflows from the north (Ottawa, Saint-Maurice Rivers) and the Ordovician limestone Lowlands carbonate baseline. The blend produces a moderately hard supply in the 73–83 mg/L range characteristic of the Montréal South Shore corridor. Saint-Hubert, located further from the primary St. Lawrence mainstream than Le Vieux-Longueuil, receives supply through the same treatment and distribution network with consistent hardness.
At 75.5 mg/L, Saint-Hubert residents see only moderate scale deposits in kettles and on tap aerators — descaling every two to three months is adequate. Hot water tanks operate well at this hardness. For Saint-Hubert's diverse housing stock — ranging from post-war bungalows to newer suburban developments — Ville de Longueuil provides annual water quality reports and advises residents in older pre-1970 properties to follow Health Canada lead precautionary guidance and contact the city regarding lead service line status.
Geology & Source: Supplied by Ville de Longueuil from the St. Lawrence River via the Longueuil Water Treatment Plant — the Saint-Hubert sector of Longueuil's distribution network receives St. Lawrence supply at 75.5 mg/L (4.4 gpg).