Beauport Water Hardness & Quality Report (2026)

Beauport (an eastern borough of Ville de Québec, extending along the St. Lawrence shoreline and the Montmorency River valley) receives its drinking water through Ville de Québec, drawing from the St. Lawrence River via the Charlesbourg-Est water treatment plant — Québec City's principal treatment facility for the northern and eastern boroughs. Water is treated with coagulation, sedimentation, ozonation, granular activated carbon filtration, and chlorination, fully meeting the Guidelines for Canadian Drinking Water Quality (GCDWQ). Hardness measures 79.5 mg/L (4.6 gpg) — classified as moderately hard by Health Canada, consistent with Québec City's standard distribution chemistry.

Beauport borders the St. Lawrence River downstream of the Québec City narrows, where the river is influenced by both Precambrian Shield tributary inflows from the Laurentian uplands and Ordovician limestone Lowlands geology. The Rivière Montmorency — which flows through Beauport and is famous for Montmorency Falls — drains soft Shield terrain from the Laurentides, slightly moderating the local hardness. Supply from the Charlesbourg-Est plant serves all eastern boroughs with consistent 79–82 mg/L hardness throughout.

At 79.5 mg/L, Beauport residents experience only modest scale deposits in kettles and on tap aerators — descaling every two to three months is typically adequate. Hot water tanks operate well at this hardness without dedicated scale treatment. Beauport's mixed housing stock — from historic waterfront properties to post-war residential developments — means that Ville de Québec advises residents in older pre-1970 homes to follow Health Canada lead precautionary guidance and participate in available lead service line assessment programmes.