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Halton Hills Drinking Water Quality
By OpenStats · Built from official Canadian sources
Direct municipal dataB
Water quality grade
Good
Graded against Health Canada drinking water guidelines
Lead within guidelinepH in range
Hardness vs provincial average247 mg/L · prov. avg 180 mg/L
Lead vs provincial average0.7 μg/L · prov. avg 0.4 μg/L
Hardness
247 mg/L
Lead
0.7 μg/L
≤ 5 μg/L
pH
8
6.5–8.5 range
Hardness
247 mg/L
Very hard
Lead
0.7 μg/L
Max: 5 μg/L
pH
8
6.5–8.5
Chlorine
1.2 mg/L
Max: 4 mg/L
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Reading this page
Halton Hills's drinking water earns Grade B (Good). Hardness is 247 mg/L (very hard), and pH is 8 against Health Canada's 6.5–8.5 guideline.
Lead at 0.7 μg/L is below the 5 μg/L maximum, and fluoride is 0.5 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 Halton Hills 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
- surface
Treatment plants
Halton Hills Water Treatment Plant
From municipal open data or regional estimate (verify locally).
All monitored parameters meet Health Canada guidelines.
Health parameters compliant; minor aesthetic factors such as hardness or pH near guideline edges.
Figure 1 · Supply chain
From watershed to tap
Compared to provincial average
Ontario · 123 cities in sample
Hardness (city vs Ontario avg)247 mg/L
pH (city vs Ontario avg)8
Lead (city vs Ontario avg)0.7 μg/L
Fluoride (city vs Ontario avg)0.5 mg/L
Provincial average: hardness 180 mg/L · pH 7.5 · lead 0.4 μg/L · fluoride 0.6 mg/L
Full parameters
| Parameter | Reading | Health Canada guideline | Status |
|---|---|---|---|
| Hardness | 247 mg/L | No health limit (aesthetic) | Compliant |
| pH | 8 | 6.5–8.5 | Compliant |
| Lead | 0.7 μg/L | ≤ 5 μg/L | Compliant |
| Fluoride | 0.5 mg/L | ≤ 1.5 mg/L | Compliant |
| Chlorine (free) | 1.2 mg/L | ≤ 4 mg/L | Compliant |
| Turbidity | 0.7999999999999999 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 →Water softeners for hard water
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Source · ECCC / municipal open data (seed). Last updated 2026-09-01. Refreshed on the site's automated schedule.