Boisbriand Water Hardness & Quality Report (2026)

The Ville de Boisbriand Water Utility provides water to about 28,000 residents in Boisbriand, Quebec. Their supply comes from a combination of sources, including the Chateauguay River and local wells tapping into fractured bedrock aquifers. Water undergoes treatment at the municipal plant, which involves filtration, chlorination for disinfection, and adjustments to pH. This system serves the urban area within the Deux-Montagnes Regional County Municipality, north of Montreal.

The Chateauguay River watershed stretches across the Appalachian piedmont and into the St. Lawrence Lowlands. This area is geologically characterized by Ordovician sedimentary rocks, such as shales and limestones that contain little calcium. Glacial deposits cover fractured bedrock aquifers where water doesn't linger long enough for significant mineral dissolution. This geological makeup results in a very soft water supply. Dissolved calcium and magnesium levels are low because the water has minimal contact with rich carbonate layers and is frequently replenished by precipitation.

Because the water is so soft, homeowners in Boisbriand likely won't encounter much scale buildup in their plumbing and appliances. This means less frequent maintenance for items like water heaters and dishwashers. You'll also find that soaps and detergents create a good lather with less product, and spotting on dishes after washing is uncommon. A water softener isn't typically necessary here; instead, the utility focuses on maintaining a balanced pH to prevent corrosion. Treated water generally falls within a pH range of 7.2–7.8, keeping lead and copper levels well below Health Canada's guidelines.