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Drinking Water Quality and Supply

Whitchurch-Stouffville Drinking Water Quality

By OpenStats · Built from official Canadian sources

Direct municipal data
B

Water quality grade

Good

Graded against Health Canada drinking water guidelines

Lead within guidelinepH in range
Hardness vs provincial average101 mg/L · prov. avg 180 mg/L
Lead vs provincial average0.5 μg/L · prov. avg 0.4 μg/L
Hardness
101 mg/L
Lead
0.5 μg/L
≤ 5 μg/L
pH
7.9
6.5–8.5 range
Hardness
101 mg/L
Moderate
Lead
0.5 μg/L
Max: 5 μg/L
pH
7.9
6.5–8.5
Chlorine
1 mg/L
Max: 4 mg/L

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Reading this page

Whitchurch-Stouffville's drinking water earns Grade B (Good). Hardness is 101 mg/L (moderate), and pH is 7.9 against Health Canada's 6.5–8.5 guideline.

Lead at 0.5 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

Supply and treatment

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.

Source type

Mixed surface and groundwater

Research confidence: medium

Source waters

  • mixed

Treatment plants

  • Whitchurch-Stouffville Water Treatment Plant

    From municipal open data or regional estimate (verify locally).

Cited sources

Outbound municipal or utility citations pending. See methodology for how supply research is gathered.

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

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

Ontario · 123 cities in sample

Hardness (city vs Ontario avg)101 mg/L
pH (city vs Ontario avg)7.9
Lead (city vs Ontario avg)0.5 μg/L
Fluoride (city vs Ontario avg)0.7 mg/L

Provincial average: hardness 180 mg/L · pH 7.5 · lead 0.4 μg/L · fluoride 0.6 mg/L

Full parameters

ParameterReadingHealth Canada guidelineStatus
Hardness101 mg/LNo health limit (aesthetic)Compliant
pH7.96.5–8.5Compliant
Lead0.5 μg/L≤ 5 μg/LCompliant
Fluoride0.7 mg/L≤ 1.5 mg/LCompliant
Chlorine (free)1 mg/L≤ 4 mg/LCompliant
Turbidity2.2 NTU≤ 1 NTU (typical target)Exceeds guideline
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Source · ECCC / municipal open data (seed). Last updated 2026-09-01. Refreshed on the site's automated schedule.