By OpenStats · Built from official Canadian sources
Direct municipal dataWater quality grade
Good
Graded against Health Canada drinking water guidelines
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Mississauga water hardness is 125 mg/L with pH 7.3.
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 Mississauga 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
Arthur P. Kennedy Water Treatment Plant
Peel Region plant on Lake Ontario serving primarily the east side of Mississauga and Brampton (plus southern Caledon and York Region). Up to 1,200 million litres per day; conventional plus advanced ozone / biologically active carbon / membrane trains. Operated by OCWA.
Lorne Park Water Treatment Plant
Peel Region plant largely underground beneath parkland on the Lake Ontario shore; serves primarily the west side of Mississauga and Brampton. Up to 500 million litres per day; conventional plus membrane / UV / GAC advanced train. Operated by OCWA.
South Peel Drinking Water System distribution is owned and operated by Peel Region; Mississauga sits entirely on the lake-based South Peel network (Caledon wells are separate rural systems).
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
Ontario · 123 cities in sample
Provincial average: hardness 178 mg/L · pH 7.5 · lead 0.4 μg/L · fluoride 0.6 mg/L
| Parameter | Reading | Health Canada guideline | Status |
|---|---|---|---|
| Hardness | 125 mg/L | No health limit (aesthetic) | Compliant |
| pH | 7.3 | 6.5–8.5 | Compliant |
| Lead | 0.7 μg/L | ≤ 5 μg/L | Compliant |
| Fluoride | 0.6 mg/L | ≤ 1.5 mg/L | Compliant |
| Chlorine (free) | 1.2 mg/L | ≤ 4 mg/L | Compliant |
| Turbidity | 1.6 NTU | ≤ 1 NTU (typical target) | Exceeds guideline |
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Mississauga pairs 125 mg/L hardness with 1.2 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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