Drinking Water Quality and Supply

Corner Brook tap water: Grade A, hardness 120 mg/L

By OpenStats · Built from official Canadian sources

Regional estimate
A

Water quality grade

Excellent

Graded against Health Canada drinking water guidelines

Lead within guidelinepH in range
Hardness vs provincial average120 mg/L · prov. avg 162 mg/L
Lead vs provincial average0 μg/L · prov. avg 0.4 μg/L
Hardness
120 mg/L
Lead
0 μg/L
≤ 5 μg/L
pH
7.3
6.5–8.5 range
Hardness
120 mg/L
Hard
Lead
0 μg/L
Max: 5 μg/L
pH
7.3
6.5–8.5
Chlorine
0.5 mg/L
Max: 4 mg/L
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Reading this page

Corner Brook's drinking water earns Grade A (Excellent). Hardness is 120 mg/L (hard), and pH is 7.3 against Health Canada's 6.5–8.5 guideline.

Lead at 0 μg/L is below the 5 μg/L maximum, and fluoride is 0.7 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 Corner Brook 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: medium

Source waters

  • Corner Brook Lake / Steady Brook watershed system

Treatment plants

  • Corner Brook water treatment facilities

    City surface supply from the Corner Brook Lake / Steady Brook upland system with municipal treatment before distribution.

Distribution

City reservoirs and distribution on the west coast urban area.

Cited sources

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

All monitored parameters meet Health Canada guidelines.

All health parameters meet Health Canada guidelines with comfortable pH, hardness, and turbidity.

Figure 1 · Supply chain

From watershed to tap

Compared to provincial average

Newfoundland and Labrador · 15 cities in sample

Hardness (city vs Newfoundland and Labrador avg)120 mg/L
pH (city vs Newfoundland and Labrador avg)7.3
Lead (city vs Newfoundland and Labrador avg)0 μg/L
Fluoride (city vs Newfoundland and Labrador avg)0.7 mg/L

Provincial average: hardness 162 mg/L · pH 7.6 · lead 0.4 μg/L · fluoride 0.6 mg/L

Full parameters

ParameterReadingHealth Canada guidelineStatus
Hardness120 mg/LNo health limit (aesthetic)Compliant
pH7.36.5–8.5Compliant
Lead0 μg/L≤ 5 μg/LCompliant
Fluoride0.7 mg/L≤ 1.5 mg/LCompliant
Chlorine (free)0.5 mg/L≤ 4 mg/LCompliant
Turbidity0.1 NTU≤ 1 NTU (typical target)Compliant
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 Corner Brook — moderate hardness

Corner Brook at 120 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.