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Drinking Water Quality and Supply

Woodstock tap water: Grade C, hardness 155 mg/L

By OpenStats · Built from official Canadian sources

Regional estimate
C

Water quality grade

Fair

Graded against Health Canada drinking water guidelines

Lead within guidelinepH in range
Hardness vs provincial average155 mg/L · prov. avg 178 mg/L
Lead vs provincial average0.3 μg/L · prov. avg 0.4 μg/L
Hardness
155 mg/L
Lead
0.3 μg/L
≤ 5 μg/L
pH
7.3
6.5–8.5 range
Hardness
155 mg/L
Hard
Lead
0.3 μg/L
Max: 5 μg/L
pH
7.3
6.5–8.5
Chlorine
0.8 mg/L
Max: 4 mg/L
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Reading this page

Woodstock's drinking water earns Grade C (Fair). Hardness is 155 mg/L (hard), and pH is 7.3 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

Supply and treatment

How Woodstock 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

Groundwater

Research confidence: medium

Source waters

  • Local aquifers (Oxford County / Woodstock wells)

Treatment plants

  • Woodstock / Oxford County well supplies

    Municipal supply from groundwater wells with disinfection; Oxford County and the City coordinate water services for Woodstock’s urban system.

Distribution

City/county distribution with reservoirs and booster stations; hardness characteristically high on limestone aquifers.

Health parameters meet Health Canada limits; turbidity above the 1 NTU typical target.

One or more parameters exceed a Health Canada drinking water guideline or turbidity target.

Figure 1 · Supply chain

From watershed to tap

Compared to provincial average

Ontario · 123 cities in sample

Hardness (city vs Ontario avg)155 mg/L
pH (city vs Ontario avg)7.3
Lead (city vs Ontario avg)0.3 μg/L
Fluoride (city vs Ontario avg)0.7 mg/L

Provincial average: hardness 178 mg/L · pH 7.5 · lead 0.4 μg/L · fluoride 0.6 mg/L

Full parameters

ParameterReadingHealth Canada guidelineStatus
Hardness155 mg/LNo health limit (aesthetic)Compliant
pH7.36.5–8.5Compliant
Lead0.3 μg/L≤ 5 μg/LCompliant
Fluoride0.7 mg/L≤ 1.5 mg/LCompliant
Chlorine (free)0.8 mg/L≤ 4 mg/LCompliant
Turbidity3.6 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.

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OpenStats pick

OpenStats picks for Woodstock — moderate hardness

Woodstock at 155 mg/L is hard enough for kettle scale but often below whole-house softener urgency. Carbon filtration for taste plus hardness strips before you overspend.

As an Amazon Associate, OpenStats earns from qualifying purchases.

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Source · ECCC / municipal open data (seed). Last updated 2026-09-01. Refreshed on the site's automated schedule.