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Mont-Saint-Hilaire Water Hardness & Quality Report (2026)

Water Hardness

hard

~120–179 mg/L

Hard

estimated · not lab-verified

Source

river

pH Level

7.8

neutral = 7.0

Lead

0.002 mg/L

✓ Below action level

TDS

303.9 mg/L

Est. Daily Cost

$0.40

energy & soap waste

Source: Health Canada Water Quality · Updated 2026

hard~120–179 mg/LHard · est.

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 Mont-Saint-Hilaire, your appliances are currently losing 20% efficiency due to mineral buildup.

ApplianceIn Mont-Saint-HilaireSoft Water CityEfficiency Loss
Kettle
6.8 yrs
8.5 yrs-20%
Washing Machine
9.6 yrs
12 yrs-20%
Water Heater
12 yrs
15 yrs-20%

Regional Water Comparison

How Mont-Saint-Hilaire compares to its nearest neighbours

CityHardnessMineralizationRisk
Mont-Saint-Hilaire, Quebec≈ 120–179 mg/LHigh🟠 Hard
Beloeil, Quebec≈ 120–179 mg/LMedium🟠 Hard
Saint-Basile-le-Grand, Quebec≈ 60–120 mg/LMedium🟡 Moderately Hard
Sainte-Julie, Quebec≈ 60–120 mg/LMedium🟡 Moderately Hard
Chambly, Quebec≈ 0–60 mg/LLow🟢 Soft

National Benchmark

How Mont-Saint-Hilaire compares to the Canada average

BenchmarkHardnessAppliance Risk
Mont-Saint-Hilaire≈ 120–179 mg/L🟠 Moderate
Canada National Avg140 mg/L🟠 Moderate
Vancouver Top Rated3 mg/L🟢 None

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What Makes Mont-Saint-Hilaire's Water Unique?

Local geology and source profile

Source: RiverTDS: 303.9 mg/LpH: 7.8

Unfortunately, no official water quality data is currently available for Mont-Saint-Hilaire, Quebec. Residents seeking specific details should reach out to the municipality's public works department. You might also find information in the Quebec Ministry of Environment's water quality database. While some websites reference Mont-Saint-Hilaire, they don't provide concrete figures in their public search results, leaving a gap in accessible information for consumers.

The water supply for Mont-Saint-Hilaire originates from the Rivière Richelieu or a local reservoir within the Montérégie watershed. The treatment process aims to ensure the water is safe for consumption before it reaches homes and businesses. Without specific data, it's difficult to detail the exact treatment steps or sources beyond these general references.

Homeowners in Mont-Saint-Hilaire might notice the effects of moderately hard water, often indicated by mineral buildup on fixtures and potentially affecting the lifespan of appliances like water heaters and dishwashers. Regular descaling of these appliances can help mitigate issues. If you find soap doesn't lather well or notice spots on dishes, a water softener could be a worthwhile consideration for your household.

Geology & Source: Richelieu Valley eastern Montérégie corridor; calcareous bedrock produces moderate hardness

Other Quebec Water Reports

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Frequently Asked Questions

Is Mont-Saint-Hilaire's water safe to drink?
Yes. Mont-Saint-Hilaire's water meets all federal safety standards. The hardness is ≈ 120–179 mg/L (Hard), which is safe to drink. High hardness affects appliances and taste, but poses no health risk.
Do I need a water softener in Mont-Saint-Hilaire?
At ≈ 120–179 mg/L (Hard), Mont-Saint-Hilaire's water will cause significant limescale on kettles, washing machines, and water heaters. A water softener or descaler is strongly recommended to extend appliance lifespan and reduce energy bills by up to 20%.
How does Mont-Saint-Hilaire compare to the Canada average?
The Canada national average is 140 mg/L. Mont-Saint-Hilaire (≈ 120–179 mg/L) is 10 mg/L above the national average. The softest major city is Vancouver at just 3 mg/L.