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OpenStats picks for Arnprior — everyday tap water
Arnprior's 81 mg/L supply is relatively soft — filtration is mostly about chlorine taste. A certified pitcher or compact under-sink unit is enough for most homes.
Arnprior tap water: Grade A, hardness 81 mg/L
By OpenStats · Built from official Canadian sources
Regional estimateA
Water quality grade
Excellent
Graded against Health Canada drinking water guidelines
Lead within guidelinepH in range
Hardness vs provincial average81 mg/L · prov. avg 178 mg/L
Lead vs provincial average0.1 μg/L · prov. avg 0.4 μg/L
Hardness
81 mg/L
Lead
0.1 μg/L
≤ 5 μg/L
pH
7.4
6.5–8.5 range
Hardness
81 mg/L
Moderate
Lead
0.1 μg/L
Max: 5 μg/L
pH
7.4
6.5–8.5
Chlorine
0.6 mg/L
Max: 4 mg/L
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OpenStats pick for Arnprior’s 81 mg/L supply — taste, not minerals
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Waterdrop 15UA under-sink filter
Under-sink carbon for Arnprior
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Baseline Arnprior tap water before RO
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Reading this page
Arnprior's drinking water earns Grade A (Excellent). Hardness is 81 mg/L (moderate), and pH is 7.4 against Health Canada's 6.5–8.5 guideline.
Lead at 0.1 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 Arnprior 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
Arnprior Water Treatment Plant
From municipal open data or regional estimate (verify locally).
All monitored parameters meet Health Canada guidelines.
All health parameters meet Health Canada guidelines with comfortable pH, hardness, and turbidity.
Figure 1 · Supply chain
From watershed to tap
Compared to provincial average
Ontario · 123 cities in sample
Hardness (city vs Ontario avg)81 mg/L
pH (city vs Ontario avg)7.4
Lead (city vs Ontario avg)0.1 μg/L
Fluoride (city vs Ontario avg)0.5 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 | 81 mg/L | No health limit (aesthetic) | Compliant |
| pH | 7.4 | 6.5–8.5 | Compliant |
| Lead | 0.1 μg/L | ≤ 5 μg/L | Compliant |
| Fluoride | 0.5 mg/L | ≤ 1.5 mg/L | Compliant |
| Chlorine (free) | 0.6 mg/L | ≤ 4 mg/L | Compliant |
| Turbidity | 0.2 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 →OpenStats pick
OpenStats picks for Arnprior — everyday tap water
Arnprior's 81 mg/L supply is relatively soft — filtration is mostly about chlorine taste. A certified pitcher or compact under-sink unit is enough for most homes.
As an Amazon Associate, OpenStats earns from qualifying purchases.
· Compare options- Shop on Amazon.caBrita Denali pitcherOpenStats pick for Arnprior’s 81 mg/L supply — taste, not minerals
- Shop on Amazon.caWaterdrop 15UA under-sink filterUnder-sink carbon for Arnprior
- Shop on Amazon.caVARIFY 17-in-1 test kitBaseline Arnprior tap water before RO
Source · ECCC / municipal open data (seed). Last updated 2026-09-01. Refreshed on the site's automated schedule.