Drinking Water Quality and Supply

From source to sink

Where Dolbeau-Mistassini water comes from

A plain-language tour of the lakes, rivers, or wells that feed Dolbeau-Mistassini, 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 Dolbeau-Mistassini 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 Dolbeau-Mistassini

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

Deep dive for households

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

Dolbeau-Mistassini uses more than one treatment plant (Usine Hamel (secteur Dolbeau); Usine Sainte-Marie (secteur Mistassini)). Utilities often run plants in parallel so different neighbourhoods can be served, or so one plant can cover for another during maintenance. Usine Hamel (secteur Dolbeau): Filtration + chlorination plant from early 1970s; city seeking rebuild funding (~$19M) as facility ages out of standards. Usine Sainte-Marie (secteur Mistassini): Filtration + chlorination for Mistassini sector per MELCC registry / city annual bilans.

After treatment, water moves through pumps, storage, and underground mains to reach streets and buildings. Two main production plants serve former Dolbeau and Mistassini sectors across the Mistassini River.

One detail that makes Dolbeau-Mistassini water feel local: A merged city still runs twin filtration plants on opposite sides of the Mistassini,Hamel's rebuild is the current flashpoint. 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 Mistassini (sector intakes for Dolbeau and Mistassini)

Treatment plants

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

  • Usine Hamel (secteur Dolbeau)

    Filtration + chlorination plant from early 1970s; city seeking rebuild funding (~$19M) as facility ages out of standards.

  • Usine Sainte-Marie (secteur Mistassini)

    Filtration + chlorination for Mistassini sector per MELCC registry / city annual bilans.

How it reaches your street

Two main production plants serve former Dolbeau and Mistassini sectors across the Mistassini River.

Dolbeau-Mistassini water quality grades · All city rankings

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