Saint-Augustin-de-Desmaures Water Hardness & Quality Report (2026)

Saint-Augustin-de-Desmaures draws its water from two main sources: the vast Saint Lawrence River and underground aquifers. This mixed supply is treated at local facilities to ensure it meets stringent Canadian drinking water guidelines before reaching homes and businesses. The municipality, situated alongside Quebec City, relies on these sources to serve its population. The watershed itself includes the extensive Saint Lawrence River system, feeding into the treatment processes that prepare the water for distribution.

The region's geology plays a significant role in the water's composition. Underlying the area are Ordovician-age bedrock formations, characterized by sedimentary rocks rich in carbonates. Glacial deposits also contribute to the mix. These geological features dissolve minerals, including calcium and magnesium, into the water supply. This process results in the moderately hard water that is typical for many municipalities in central Quebec.

With water hardness at 80 mg/L, homeowners might notice some scale forming over time in appliances like kettles and coffee makers, or on shower heads. You may also see reduced efficiency in water heaters and dishwashers due to mineral deposits. While a water softener isn't strictly necessary, many residents opt for one to prolong appliance life and improve cleaning. Simple descaling of fixtures and using dishwasher additives can also help manage the effects of this moderately soft water.