Drinking Water Quality and Supply

From source to sink

Where Granby water comes from

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

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

Deep dive for households

Granby drinking water starts as surface water (rivers, lakes, or reservoirs). The named source on the utility record is Yamaska River system / Lac Boivin watershed. That is the water that eventually reaches kitchen taps after treatment, not a separate bottled brand.

Water is cleaned at Usine de production d’eau potable de Granby before it enters city pipes. City surface treatment plant supplying Granby from the Yamaska / Lac Boivin local watershed system.

After treatment, water moves through pumps, storage, and underground mains to reach streets and buildings. City distribution with reservoirs serving the urban area and industrial park.

One detail that makes Granby water feel local: Lac Boivin is both a community landmark and part of Granby’s source-water story on the Yamaska system. 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: medium

Named source waters

  • Yamaska River system / Lac Boivin watershed

Treatment plants

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

  • Usine de production d’eau potable de Granby

    City surface treatment plant supplying Granby from the Yamaska / Lac Boivin local watershed system.

How it reaches your street

City distribution with reservoirs serving the urban area and industrial park.

Cited sources

Supply notes summarize published utility materials. They are not a substitute for the issuing authority's current notices or for a licensed tap test.

Granby water quality grades · All city rankings

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