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OpenStats picks for Cowansville — everyday tap water
Cowansville's 96 mg/L supply is relatively soft — filtration is mostly about chlorine taste. A certified pitcher or compact under-sink unit is enough for most homes.
Cowansville tap water: Grade B, hardness 96 mg/L
By OpenStats · Built from official Canadian sources
Regional estimateB
Water quality grade
Good
Graded against Health Canada drinking water guidelines
Lead within guidelinepH in range
Hardness vs provincial average96 mg/L · prov. avg 183 mg/L
Lead vs provincial average0 μg/L · prov. avg 0.3 μg/L
Hardness
96 mg/L
Lead
0 μg/L
≤ 5 μg/L
pH
7.4
6.5–8.5 range
Hardness
96 mg/L
Moderate
Lead
0 μg/L
Max: 5 μg/L
pH
7.4
6.5–8.5
Chlorine
0.5 mg/L
Max: 4 mg/L
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OpenStats pick for Cowansville’s 96 mg/L supply — taste, not minerals
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Reading this page
Cowansville's drinking water earns Grade B (Good). Hardness is 96 mg/L (moderate), and pH is 7.4 against Health Canada's 6.5–8.5 guideline.
Lead at 0 μg/L is below the 5 μg/L maximum, and fluoride is 0.5 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
Supply and treatment
How Cowansville 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.
Source type
Surface water
Research confidence: high
Source waters
- Lac Davignon (reservoir on Rivière Yamaska Sud-Est, created 1969)
Treatment plants
Usine de filtration de Cowansville
Full municipal filtration plant with modern process controls; >8,500 m³ reservoir storage before distribution and booster stations.
Distribution
Lac Davignon is both the drinking reservoir and a recreation lake (no gas motors).
Health parameters meet Health Canada limits; turbidity above the 1 NTU typical target.
Health parameters meet Health Canada limits; turbidity exceeds the typical 1 NTU aesthetic target.
Figure 1 · Supply chain
From watershed to tap
Compared to provincial average
Quebec · 34 cities in sample
Hardness (city vs Quebec avg)96 mg/L
pH (city vs Quebec avg)7.4
Lead (city vs Quebec avg)0 μg/L
Fluoride (city vs Quebec avg)0.5 mg/L
Provincial average: hardness 183 mg/L · pH 7.5 · lead 0.3 μg/L · fluoride 0.6 mg/L
Full parameters
| Parameter | Reading | Health Canada guideline | Status |
|---|---|---|---|
| Hardness | 96 mg/L | No health limit (aesthetic) | Compliant |
| pH | 7.4 | 6.5–8.5 | Compliant |
| Lead | 0 μg/L | ≤ 5 μg/L | Compliant |
| Fluoride | 0.5 mg/L | ≤ 1.5 mg/L | Compliant |
| Chlorine (free) | 0.5 mg/L | ≤ 4 mg/L | Compliant |
| Turbidity | 1.7 NTU | ≤ 1 NTU (typical target) | Exceeds guideline |
Alberta water licences
WaterRegister.ca
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
OpenStats picks for Cowansville — everyday tap water
Cowansville's 96 mg/L supply is relatively soft — filtration is mostly about chlorine taste. A certified pitcher or compact under-sink unit is enough for most homes.
As an Amazon Associate, OpenStats earns from qualifying purchases.
· Compare options- Shop on Amazon.caBrita Denali pitcherOpenStats pick for Cowansville’s 96 mg/L supply — taste, not minerals
- Shop on Amazon.caWaterdrop 15UA under-sink filterUnder-sink carbon for Cowansville
- Shop on Amazon.caVARIFY 17-in-1 test kitBaseline Cowansville tap water before RO
Source · ECCC / municipal open data (seed). Last updated 2026-09-01. Refreshed on the site's automated schedule.