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Milton tap water: Grade C, hardness 191 mg/L
By OpenStats · Built from official Canadian sources
Regional estimateC
Water quality grade
Fair
Graded against Health Canada drinking water guidelines
Lead within guidelinepH in range
Hardness vs provincial average191 mg/L · prov. avg 178 mg/L
Lead vs provincial average0.7 μg/L · prov. avg 0.4 μg/L
Hardness
191 mg/L
Lead
0.7 μg/L
≤ 5 μg/L
pH
7.9
6.5–8.5 range
Hardness
191 mg/L
Very hard
Lead
0.7 μg/L
Max: 5 μg/L
pH
7.9
6.5–8.5
Chlorine
1.2 mg/L
Max: 4 mg/L
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OpenStats pick for Milton — 1.2 mg/L chlorine taste on 191 mg/L water
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Reading this page
Milton's drinking water earns Grade C (Fair). Hardness is 191 mg/L (very hard), and pH is 7.9 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 0.7 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 Milton 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
Mixed surface and groundwater
Research confidence: medium
Source waters
- mixed
Treatment plants
Milton Water Treatment Plant
From municipal open data or regional estimate (verify locally).
Health parameters meet Health Canada limits; turbidity above the 1 NTU typical target and very hard water.
One or more parameters exceed a Health Canada drinking water guideline or turbidity target.
Figure 1 · Supply chain
From watershed to tap
Compared to provincial average
Ontario · 123 cities in sample
Hardness (city vs Ontario avg)191 mg/L
pH (city vs Ontario avg)7.9
Lead (city vs Ontario avg)0.7 μg/L
Fluoride (city vs Ontario avg)0.7 mg/L
Provincial average: hardness 178 mg/L · pH 7.5 · lead 0.4 μg/L · fluoride 0.6 mg/L
Full parameters
| Parameter | Reading | Health Canada guideline | Status |
|---|---|---|---|
| Hardness | 191 mg/L | No health limit (aesthetic) | Compliant |
| pH | 7.9 | 6.5–8.5 | Compliant |
| Lead | 0.7 μg/L | ≤ 5 μg/L | Compliant |
| Fluoride | 0.7 mg/L | ≤ 1.5 mg/L | Compliant |
| Chlorine (free) | 1.2 mg/L | ≤ 4 mg/L | Compliant |
| Turbidity | 3.2 NTU | ≤ 1 NTU (typical target) | Exceeds guideline |
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 Milton — chlorine + hardness
Milton pairs 191 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.
· Compare options- Shop on Amazon.caBrita 10-cup Elite pitcherOpenStats pick for Milton — 1.2 mg/L chlorine taste on 191 mg/L water
- Shop on Amazon.caSR SUN RISE 20-stage shower filterMilton’s 1.2 mg/L chlorine — bestselling shower filter on Amazon.ca
- Shop on Amazon.caFrizzlife SW20 under-sink filterNSF 53 lead reduction for Milton older plumbing
- Shop on Amazon.caBrita Elite replacement filtersSix-month Elite cartridges for Milton
- Shop on Amazon.caVARIFY hardness test strips191 mg/L at Milton — pitchers do not soften; strips decide if you need a softener
Source · ECCC / municipal open data (seed). Last updated 2026-09-01. Refreshed on the site's automated schedule.