Sainte-Agathe-des-Monts Water Hardness & Quality Report (2026)
Water Hardness
Source
river
pH Level
7.8
neutral = 7.0
Lead
0.006 mg/L
✓ Below action level
TDS
261.5 mg/L
Est. Daily Cost
$0.30
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 Sainte-Agathe-des-Monts, your appliances are currently losing 15% efficiency due to mineral buildup.
| Appliance | In Sainte-Agathe-des-Monts | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 5.9 yrs | 8.5 yrs | -31% |
| Washing Machine | 9.5 yrs | 12 yrs | -21% |
| Water Heater | 11.1 yrs | 15 yrs | -26% |
Regional Water Comparison
How Sainte-Agathe-des-Monts compares to its nearest neighbours
| City | Hardness | Mineralization | Risk |
|---|---|---|---|
| ▶ Sainte-Agathe-des-Monts, Quebec | 112 mg/L | High | 🟡 Moderately Hard |
| Sainte-Adèle, Quebec | 114 mg/L | High | 🟡 Moderately Hard |
| Prévost, Quebec | 83.5 mg/L | Medium | 🟡 Moderately Hard |
| Saint-Jérôme, Quebec | 73 mg/L | Medium | 🟡 Moderately Hard |
| Saint-Canut, Quebec | 115.5 mg/L | High | 🟡 Moderately Hard |
National Benchmark
How Sainte-Agathe-des-Monts compares to the Canada average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Sainte-Agathe-des-Monts | 112 mg/L | 🟡 Low |
| Canada National Avg | 141 mg/L | 🟠 Moderate |
| Vancouver Top Rated | 3 mg/L | 🟢 None |
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What Makes Sainte-Agathe-des-Monts's Water Unique?
Local geology and source profile
Sainte-Agathe-des-Monts's drinking water is managed by the Ville de Sainte-Agathe-des-Monts, drawing from the Rivière du Nord and Lac des Sables — Sainte-Agathe-des-Monts is the regional capital of the MRC des Laurentides in the Laurentides region, the largest resort town in the Laurentians and the historic cultural capital of the Pays d'en Haut resort corridor, on the shores of the scenic Lac des Sables, a renowned four-season destination of summer swimming, boating, and cycling, autumn foliage viewing, and winter skiing on the surrounding Laurentian hills, home to the famous Sainte-Agathe-des-Monts summer music festivals and the vibrant arts and culture community of the upper Laurentians. Water undergoes coagulation, sedimentation, filtration, UV disinfection, and chloramination, meeting all Guidelines for Canadian Drinking Water Quality (GCDWQ) requirements. Hardness measures 112 mg/L (6.5 gpg) — classified as moderately hard by Health Canada, consistent with the upper Laurentides resort corridor supply range.
Sainte-Agathe-des-Monts draws from the Rivière du Nord and Lac des Sables — the Lac des Sables and Rivière du Nord at this upper Laurentides elevation carry dissolved minerals from the Precambrian Grenville Province granitic-gneiss terrain with some Ordovician carbonate influence from the lower valley transition, producing moderately hard water at 112 mg/L. This is consistent with Sainte-Adèle (114 mg/L from batch 36) just to the south in the same Rivière du Nord corridor, confirming the consistent Laurentides Rivière du Nord supply character in the 112–115 mg/L range. Water quality reports are published under Ministère de l'Environnement oversight.
At 112 mg/L, Sainte-Agathe-des-Monts homes and seasonal cottages experience moderate scale deposits — monthly kettle and showerhead cleaning is typical. The elevated lead (0.006 mg/L) warrants particular attention. Health Canada lead precautionary guidance applies to pre-1975 properties in the historic Sainte-Agathe-des-Monts Lac des Sables resort residential properties and the municipal core.
Geology & Source: Supplied by the Ville de Sainte-Agathe-des-Monts from the Rivière du Nord and Lac des Sables — the Sainte-Agathe-des-Monts Laurentides supply from the upper Rivière du Nord watershed produces hard water at 112 mg/L (6.5 gpg), consistent with the upper Laurentides resort corridor supply range.