By OpenStats · Built from official Canadian sources
Direct municipal dataWater quality grade
Good
Graded against Health Canada drinking water guidelines
Whitchurch-Stouffville hardness is 318 mg/L — pitcher filters improve taste but will not soften water. Size a metered whole-house softener for scale, and add under-sink carbon for drinking chlorine.
OpenStats pick for Whitchurch-Stouffville’s 318 mg/L hardness — metered whole-house softener sized for very hard Canadian tap water
Whitchurch-Stouffville: under-sink carbon for drinking water (chlorine 1.0 mg/L) — does not remove hardness minerals
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Municipal reports cover the plant. A Tap Score kit tests the water at a Whitchurch-Stouffville tap for a broader contaminant panel.
Lab kit partner link. We may earn a commission when tracking is active.
Whitchurch-Stouffville water hardness is 318 mg/L, from the city's published water quality reporting.
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 Whitchurch-Stouffville 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.
Mixed surface and groundwater
Research confidence: medium
Whitchurch-Stouffville Water Treatment Plant
From municipal open data or regional estimate (verify locally).
Health parameters meet Health Canada limits; turbidity above the 1 NTU typical target and very hard water.
Health parameters meet Health Canada limits; turbidity exceeds the typical 1 NTU aesthetic target.
Figure 1 · Supply chain
From watershed to tap
Ontario · 123 cities in sample
Provincial average: hardness 178 mg/L · pH 7.5 · lead 0.4 μg/L · fluoride 0.6 mg/L
| Parameter | Reading | Health Canada guideline | Status |
|---|---|---|---|
| Hardness | 318 mg/L | No health limit (aesthetic) | Compliant |
| pH | 7.9 | 6.5–8.5 | Compliant |
| Lead | 0.5 μg/L | ≤ 5 μg/L | Compliant |
| Fluoride | 0.7 mg/L | ≤ 1.5 mg/L | Compliant |
| Chlorine (free) | 1 mg/L | ≤ 4 mg/L | Compliant |
| Turbidity | 2.2 NTU | ≤ 1 NTU (typical target) | Exceeds guideline |
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
Whitchurch-Stouffville hardness is 318 mg/L — pitcher filters improve taste but will not soften water. Size a metered whole-house softener for scale, and add under-sink carbon for drinking chlorine.
As an Amazon Associate, OpenStats earns from qualifying purchases.
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