By OpenStats · Built from official Canadian sources
Regional estimateWater quality grade
Good
Graded against Health Canada drinking water guidelines
Gatineau at 203 mg/L is hard enough to scale kettles, but most residents solve taste and lead at the tap first. Carbon filtration + test strips; whole-house softener only if repeat hardness readings justify it.
OpenStats pick for Gatineau’s 203 mg/L hardness — drinking-water carbon first; pitchers do not soften
Higher-flow kitchen carbon for Gatineau without dedicating a softener closet
Gatineau at 203 mg/L — measure before jumping to a whole-house softener
Consider whole-house softening only if strips confirm 203 mg/L+ is wrecking appliances
As an Amazon Associate, OpenStats earns from qualifying purchases.
Municipal reports cover the plant. A Tap Score kit tests the water at a Gatineau tap for a broader contaminant panel.
Lab kit partner link. We may earn a commission when tracking is active.
Under-sink and RO systems from Waterdrop Canada — a direct brand alternative to marketplace filters.
Waterdrop affiliate link. We may earn a commission.
Gatineau's drinking water earns Grade B (Good). Hardness is 203 mg/L (very hard), and pH is 7.6 against Health Canada's 6.5–8.5 guideline.
Lead at 0.3 μg/L is below the 5 μg/L maximum, and fluoride is 0.7 mg/L against a guideline of ≤ 1.5 mg/L.
How to use this page: read the headline metric and provincial comparison first, then supply and treatment notes, then the source footer for the underlying dataset.
Watershed to tap
How Gatineau draws, treats, and distributes drinking water, from municipal and utility publications. Chemistry grades above come from separate parameter records; this section does not invent plant lab figures.
Surface water
Research confidence: high
Usine d'Aylmer
Ottawa River intake; serves Aylmer sector.
Usine de Hull
Ottawa River intake; serves Hull sector.
Usine de Gatineau
Ottawa River intake; largest sector plant; provincial-funded rehab/ozonation project underway.
Usine de Buckingham
Rivière du Lièvre intake; serves Buckingham and Masson-Angers.
Four largely independent production plants treat and distribute through sector aqueduct networks (city reports on the order of 1,400 km of watermains). Each plant has its own RPEP source-vulnerability assessment.
All monitored parameters meet Health Canada guidelines.
Health parameters compliant; minor aesthetic factors such as hardness or pH near guideline edges.
Figure 1 · Supply chain
From watershed to tap
Quebec · 34 cities in sample
Provincial average: hardness 183 mg/L · pH 7.5 · lead 0.3 μg/L · fluoride 0.6 mg/L
| Parameter | Reading | Health Canada guideline | Status |
|---|---|---|---|
| Hardness | 203 mg/L | No health limit (aesthetic) | Compliant |
| pH | 7.6 | 6.5–8.5 | Compliant |
| Lead | 0.3 μg/L | ≤ 5 μg/L | Compliant |
| Fluoride | 0.7 mg/L | ≤ 1.5 mg/L | Compliant |
| Chlorine (free) | 0.8 mg/L | ≤ 4 mg/L | Compliant |
| Turbidity | 0.4 NTU | ≤ 1 NTU (typical target) | Compliant |
On a private well or holding an Alberta water allocation licence? Water Register maps EPA licence records, transfer comparables, and watershed context across the province.
Explore WaterRegister.ca →OpenStats pick
Gatineau at 203 mg/L is hard enough to scale kettles, but most residents solve taste and lead at the tap first. Carbon filtration + test strips; whole-house softener only if repeat hardness readings justify it.
As an Amazon Associate, OpenStats earns from qualifying purchases.
· Compare options
