Drinking Water Quality and Supply

From source to sink

Where Saguenay water comes from

A plain-language tour of the lakes, rivers, or wells that feed Saguenay, the plants that clean the water, and how it reaches kitchen taps. Lab grades for hardness, lead, and pH live on the water quality page.

On the map

Where Saguenay water lives

Source waters and treatment plants pinned from published utility names. Open a pin below for the full OpenStreetMap view.

Map showing drinking-water locations for Saguenay

Map data © OpenStreetMap contributors. Pins are approximate for orientation, not legal survey points.

Deep dive for households

Saguenay drinking water starts as a mix of surface water and wells. The named sources on the utility record are Lac Kénogami (via Rivière Chicoutimi and Rivière aux Sables), Lac Kénogami sector lakes / intakes, Lac de l'Aqueduc (Saint-Honoré), Groundwater wells (La Baie sector). That is the water that eventually reaches kitchen taps after treatment, not a separate bottled brand.

Saguenay uses more than one treatment plant (Usine de filtration de Chicoutimi; Usine de filtration de Jonquière; Usine de filtration d'Arvida; Usine / système Saint-Honoré). Utilities often run plants in parallel so different neighbourhoods can be served, or so one plant can cover for another during maintenance. Usine de filtration de Chicoutimi: Major plant supplied via Rivière Chicoutimi from Lac Kénogami reservoir system. Usine de filtration de Jonquière: Rivière aux Sables intake; fully renovated 2016 with membrane filtration.

After treatment, water moves through pumps, storage, and underground mains to reach streets and buildings. City operates multiple filtration plants, wells, boosters, and reservoirs across former Chicoutimi, Jonquière, and La Baie networks. Lac Kénogami is the principal raw-water reservoir for ~100,000 residents via the Chicoutimi and aux Sables rivers; La Baie relies mainly on groundwater wells.

One detail that makes Saguenay water feel local: Kénogami outflow sharing between Chicoutimi and aux Sables rivers still reflects the historic Letellier judgment (roughly 2/3 vs 1/3). Lab grades for hardness, lead, and pH sit on the city water quality page; this overview is about the route the water travels.

Where it starts

Mixed surface and groundwater

A blend of surface water and wells, depending on the neighbourhood or season.

Research confidence: medium

Named source waters

  • Lac Kénogami (via Rivière Chicoutimi and Rivière aux Sables)
  • Lac Kénogami sector lakes / intakes
  • Lac de l'Aqueduc (Saint-Honoré)
  • Groundwater wells (La Baie sector)

Treatment plants

These are the buildings that filter and disinfect water before it enters city pipes.

  • Usine de filtration de Chicoutimi

    Major plant supplied via Rivière Chicoutimi from Lac Kénogami reservoir system.

  • Usine de filtration de Jonquière

    Rivière aux Sables intake; fully renovated 2016 with membrane filtration.

  • Usine de filtration d'Arvida

    One of four surface/filtration plants cited for the amalgamated city.

  • Usine / système Saint-Honoré

    Serves northern Chicoutimi area from Lac de l'Aqueduc supply.

How it reaches your street

City operates multiple filtration plants, wells, boosters, and reservoirs across former Chicoutimi, Jonquière, and La Baie networks. Lac Kénogami is the principal raw-water reservoir for ~100,000 residents via the Chicoutimi and aux Sables rivers; La Baie relies mainly on groundwater wells.

Saguenay water quality grades · All city rankings

Source · ECCC / municipal open data (seed). Last updated 2026-07-22. Refreshed on the site's automated schedule.