From source to sink
Where Sept-Îles water comes from
A plain-language tour of the lakes, rivers, or wells that feed Sept-Îles, 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 Sept-Îles water lives
Source waters and treatment plants pinned from published utility names. Open a pin below for the full OpenStreetMap view.
- CitySept-Îles
Municipal service area
- Treatment plantCentrale de traitement d'eau Sept-Îles
Approximate pin near Sept-Îles (exact plant coordinates pending)
Map data © OpenStreetMap contributors. Pins are approximate for orientation, not legal survey points.
Deep dive for households
Sept-Îles drinking water starts as surface water (rivers, lakes, or reservoirs). The named source on the utility record is Lac des Rapides (intake in Baie des Crans). That is the water that eventually reaches kitchen taps after treatment, not a separate bottled brand.
Water is cleaned at Centrale de traitement d'eau Sept-Îles before it enters city pipes. Filtration, corrosion control, chlorination historically; chloramine disinfection commissioned Oct 2025 to cut THMs from high-organic lake water.
After treatment, water moves through pumps, storage, and underground mains to reach streets and buildings. Lake ~10-12 km NW of urban core; also smaller satellite systems (Moisie, Gallix, Clarke City rechlorination).
One detail that makes Sept-Îles water feel local: Lac des Rapides' natural organics drove a switch from free chlorine to chloramine in 2025 to control disinfection by-products. 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 des Rapides (intake in Baie des Crans)
Treatment plants
These are the buildings that filter and disinfect water before it enters city pipes.
Centrale de traitement d'eau Sept-Îles
Filtration, corrosion control, chlorination historically; chloramine disinfection commissioned Oct 2025 to cut THMs from high-organic lake water.
How it reaches your street
Lake ~10-12 km NW of urban core; also smaller satellite systems (Moisie, Gallix, Clarke City rechlorination).