Dieppe Water Hardness & Quality Report (2026)

Dieppe's drinking water is managed by the City of Dieppe, the francophone suburb of Moncton and the fastest-growing city in Atlantic Canada, drawing from the regional Greater Moncton water supply system — sourced from the Petitcodiac River and supplemented by local reservoir supply via the Moncton Water Treatment Plant. Water undergoes coagulation, sedimentation, filtration, UV disinfection, and chloramination, meeting all Guidelines for Canadian Drinking Water Quality (GCDWQ) requirements. Hardness measures 45 mg/L (2.6 gpg) — classified as soft by Health Canada, reflecting the characteristically soft surface water supply of southeastern New Brunswick.

The Petitcodiac River watershed drains the Appalachian Highlands of southeastern New Brunswick — ancient Cambrian and Ordovician metamorphic slate, phyllite, and greywacke of the New Brunswick Appalachian terrane that dissolve very little calcium. The soft 45 mg/L supply is consistent with Atlantic Maritime province river systems (Fredericton 30 mg/L from NB, Lower Sackville 45 mg/L from NS from batch 8) — all reflecting the low-mineral character of eastern Canadian Appalachian watersheds.

With 45 mg/L of hardness, Dieppe homes are essentially scale-free — occasional kettle cleaning every three to four months is sufficient. Hot water tanks have an excellent operational lifespan. As the fastest-growing Atlantic city with extensive new residential and commercial development, Dieppe's modern housing stock meets current Health Canada plumbing standards. The City of Dieppe coordinates with the Greater Moncton region on annual water quality reporting following Health Canada Guidelines for Canadian Drinking Water Quality, with information available at dieppe.ca.