Dieppe Water Hardness & Quality Report (2026)

The water serving Dieppe, New Brunswick, comes from a joint Moncton/Riverview/Dieppe Water and Wastewater service, managed by the City of Moncton. Its main source is the Petitcodiac River, with water treated at the Irishtown Water Treatment Plant. This system also draws from groundwater wells to ensure a reliable supply for the roughly 80,000 residents across the three municipalities in the Greater Moncton area. The Petitcodiac Watershed itself covers 1,200 square kilometers of mixed forest and farmland before emptying into Shepody Bay and Chignecto Bay.

The geology beneath the Petitcodiac Watershed consists of Carboniferous Maritimes Basin rocks. These include Horton sandstones and shales, along with limestone and dolomite found in formations like the Hopewell Cape Formation. As water flows through these rock types, it picks up calcium and magnesium, contributing to a hard water profile. Additionally, groundwater drawn from local glacial drift aquifers and fractured bedrock wells in the region picks up more minerals from Paleozoic carbonates, further enhancing the water's mineral content and resulting in a characteristically hard supply typical of Atlantic Canada's sedimentary basins.

This level of hardness means you might notice limescale buildup in appliances like kettles, coffee makers, dishwashers, and water heaters, which can reduce their efficiency and shorten their lifespan. Over time, pipes can also become narrowed by scale. You may find laundry comes out feeling stiff, soap doesn't lather as well, and your skin and hair might feel drier. To manage scale, consider monthly vinegar descaling for appliances and regular boiler flushes. Adjusting detergent amounts can also help. For households experiencing these issues, installing a water softener is often recommended to extend the life of your equipment and improve cleaning effectiveness. Recent reports from Moncton indicate compliance with New Brunswick guidelines, though occasional turbidity issues after main breaks have been resolved through flushing. Advisories were issued regarding potential lead risks in older plumbing, but copper levels remain stable.