From source to sink
Where Quebec City water comes from
A plain-language tour of the lakes, rivers, or wells that feed Quebec City, 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 Quebec City water lives
Source waters and treatment plants pinned from published utility names. Open a pin below for the full OpenStreetMap view.
- CityQuebec City
Municipal service area
- Source waterLac Saint-Charles
Source water
- Source waterRivière Saint-Charles
Source water
- Source waterRivière Montmorency
Source water
- Source waterLac des Roches
Source water
- Source waterSt. Lawrence River
St. Lawrence at Quebec
- Source waterRivière des Sept Ponts
Source water
- Treatment plantUTE de Québec
Approximate pin near Quebec City (exact plant coordinates pending)
- Treatment plantUTE de Sainte-Foy
Approximate pin near Quebec City (exact plant coordinates pending)
- Treatment plantUTE de Beauport
Approximate pin near Quebec City (exact plant coordinates pending)
- Treatment plantUTE de Charlesbourg
Approximate pin near Quebec City (exact plant coordinates pending)
Map data © OpenStreetMap contributors. Pins are approximate for orientation, not legal survey points.
Deep dive for households
Quebec City drinking water starts as surface water (rivers, lakes, or reservoirs). The named sources on the utility record are Lac Saint-Charles, Rivière Saint-Charles, Rivière Montmorency, Lac des Roches, St. Lawrence River, Source du Bon Pasteur, Rivière des Sept Ponts. That is the water that eventually reaches kitchen taps after treatment, not a separate bottled brand.
Quebec City uses more than one treatment plant (UTE de Québec; UTE de Sainte-Foy; UTE de Beauport; UTE de Charlesbourg). Utilities often run plants in parallel so different neighbourhoods can be served, or so one plant can cover for another during maintenance. UTE de Québec: Serves centre / Val-Bélair network; source is rivière and lac Saint-Charles. UTE de Sainte-Foy: West network (Sainte-Foy, Cap-Rouge, Saint-Augustin); St. Lawrence River intake.
After treatment, water moves through pumps, storage, and underground mains to reach streets and buildings. Four treatment plants and about 2,800 km of potable distribution mains feed sector networks that can support each other when needed. City also operates 23 drinking-water reservoirs.
One detail that makes Quebec City water feel local: Lac and rivière Saint-Charles are the region’s main supply; roughly one-fifth of distributed water is drawn from the St. Lawrence at Sainte-Foy. Interim watershed control rules protect Saint-Charles and Montmorency intake basins. 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
- Lac Saint-Charles
- Rivière Saint-Charles
- Rivière Montmorency
- Lac des Roches
- St. Lawrence River
- Source du Bon Pasteur
- Rivière des Sept Ponts
Treatment plants
These are the buildings that filter and disinfect water before it enters city pipes.
UTE de Québec
Serves centre / Val-Bélair network; source is rivière and lac Saint-Charles.
UTE de Sainte-Foy
West network (Sainte-Foy, Cap-Rouge, Saint-Augustin); St. Lawrence River intake.
UTE de Beauport
Beauport network; Rivière Montmorency intake.
UTE de Charlesbourg
Charlesbourg network; Rivière Montmorency, lac des Roches, source du Bon Pasteur, and rivière des Sept Ponts; includes under-river intake works on Montmorency.
How it reaches your street
Four treatment plants and about 2,800 km of potable distribution mains feed sector networks that can support each other when needed. City also operates 23 drinking-water reservoirs.