Drinking Water Quality and Supply

From source to sink

Where Baie-Comeau water comes from

A plain-language tour of the lakes, rivers, or wells that feed Baie-Comeau, 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 Baie-Comeau 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 Baie-Comeau

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

Deep dive for households

Baie-Comeau drinking water starts as surface water (rivers, lakes, or reservoirs). The named source on the utility record is Rivière Manicouagan. That is the water that eventually reaches kitchen taps after treatment, not a separate bottled brand.

Water is cleaned at Usine de traitement d'eau potable Baie-Comeau (2015/2018) before it enters city pipes. CO₂ and sulphur dioxide at Manicouagan pumping station; membrane filtration trains, chlorination, corrosion control. Consolidated former multi-plant / Lac à La Chasse system onto Manicouagan.

After treatment, water moves through pumps, storage, and underground mains to reach streets and buildings. New plant linked former four networks with >8 km of mains; large clearwell for ~24 h emergency storage.

One detail that makes Baie-Comeau water feel local: Since 2018 the whole city drinks Manicouagan River water from one membrane plant,Lac à La Chasse is no longer the east-sector source. 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

Surface water

Rivers, lakes, or reservoirs, not underground wells as the main draw.

Research confidence: high

Named source waters

  • Rivière Manicouagan

Treatment plants

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

  • Usine de traitement d'eau potable Baie-Comeau (2015/2018)

    CO₂ and sulphur dioxide at Manicouagan pumping station; membrane filtration trains, chlorination, corrosion control. Consolidated former multi-plant / Lac à La Chasse system onto Manicouagan.

How it reaches your street

New plant linked former four networks with >8 km of mains; large clearwell for ~24 h emergency storage.

Baie-Comeau water quality grades · All city rankings

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