By OpenStats · Built from official Canadian sources
Direct municipal dataWater quality grade
Fair
Graded against Health Canada drinking water guidelines
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Municipal reports cover the plant. A Tap Score kit tests the water at a Windsor tap for a broader contaminant panel.
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Windsor water hardness is 110 mg/L, from the city's published water quality reporting.
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 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
A.H. Weeks Water Treatment Plant
Windsor Utilities Commission plant commissioned 1994; ozone primary disinfection added 2001. Screening, pH adjustment, ozone, coagulation/flocculation/sedimentation, dual-media filtration, chlorination, fluoridation, and phosphate corrosion control. Maximum capacity about 268 million litres per day. Operated by ENWIN.
Treated water feeds on-site and nearby reservoirs, then A.J. Brian and George Avenue pumping stations. J.F. Cooke Reservoir / rechlorination station supports the southwest; a downtown water tower aids pressure control. System also supplies LaSalle and Tecumseh.
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
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 | 110 mg/L | No health limit (aesthetic) | Compliant |
| pH | 7.8 | 6.5–8.5 | Compliant |
| Lead | 0.6 μg/L | ≤ 5 μg/L | Compliant |
| Fluoride | 0.6 mg/L | ≤ 1.5 mg/L | Compliant |
| Chlorine (free) | 1.1 mg/L | ≤ 4 mg/L | Compliant |
| Turbidity | 3.1 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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Windsor pairs 110 mg/L hardness with 1.1 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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