Pickering Water Hardness & Quality Report (2026)

The Region of Durham provides drinking water to Pickering and surrounding communities in Durham Region, Ontario. This water system draws from multiple sources, including Lake Ontario surface water and regional groundwater supplies. Treatment is managed through the region's comprehensive water treatment infrastructure. The Region of Durham publishes annual water quality reports that detail hardness and other important parameters across all its service areas.

Pickering's water originates from the Greater Toronto Area watershed system, which sits atop Ordovician and Silurian limestone and dolostone bedrock. These rich carbonate rock layers naturally dissolve, releasing significant amounts of calcium and magnesium ions into both the groundwater and surface water sources. This particular geological setting, combined with mineral-rich runoff from Lake Ontario's watershed, consistently results in a hard water supply, a common characteristic of the Greater Golden Horseshoe region.

Homeowners in Pickering may notice scale buildup on plumbing fixtures and a reduction in the efficiency of appliances like water heaters and dishwashers. Soap and detergent won't lather as effectively, meaning you'll need to use more to get things clean. To combat these effects and help your plumbing and appliances last longer, installing a water softener is often recommended. For immediate relief, regularly descaling items like kettles and showerheads can help maintain their performance. The Region of Durham diligently tests and reports on water quality, including hardness levels, ensuring compliance with all drinking water standards.