By OpenStats · Built from official Canadian sources
Regional estimateWater quality grade
Good
Graded against Health Canada drinking water guidelines
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Grand Falls-Windsor's drinking water earns Grade B (Good). Hardness is 189 mg/L (very hard), and pH is 7.2 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 0.6 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
How Grand Falls-Windsor 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.
Surface water
Research confidence: high
Exploits Regional Water Treatment Plant (New Bay Road)
Conventional plant (1995): hydrated lime pre-treatment, alum coagulation, plate settlers, multi-media filters, gas chlorination, lime post-pH. Design ~27.5 ML/d; orthophosphate corrosion control added ~2025.
GFW operates plant for region serving GFW, Bishop's Falls, Botwood, Peterview, Northern Arm (~23,000 people).
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
Newfoundland and Labrador · 15 cities in sample
Provincial average: hardness 162 mg/L · pH 7.6 · lead 0.4 μg/L · fluoride 0.6 mg/L
| Parameter | Reading | Health Canada guideline | Status |
|---|---|---|---|
| Hardness | 189 mg/L | No health limit (aesthetic) | Compliant |
| pH | 7.2 | 6.5–8.5 | Compliant |
| Lead | 0.5 μg/L | ≤ 5 μg/L | Compliant |
| Fluoride | 0.6 mg/L | ≤ 1.5 mg/L | Compliant |
| Chlorine (free) | 1 mg/L | ≤ 4 mg/L | Compliant |
| Turbidity | 3 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.
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Grand Falls-Windsor pairs 189 mg/L hardness with 1.0 mg/L chlorine — taste and scale show up together. Elite carbon for drinking, shower filter for chlorine, strips so you know when you need a softener.
As an Amazon Associate, OpenStats earns from qualifying purchases.
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