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Drinking Water Quality and Supply

Aurora tap water: Grade B, hardness 130 mg/L

By OpenStats · Built from official Canadian sources

Direct municipal data
B

Water quality grade

Good

Graded against Health Canada drinking water guidelines

Lead within guidelinepH in range
Hardness vs provincial average130 mg/L · prov. avg 178 mg/L
Lead vs provincial average0.4 μg/L · prov. avg 0.4 μg/L
Hardness
130 mg/L
Lead
0.4 μg/L
≤ 5 μg/L
pH
7.8
6.5–8.5 range
Hardness
130 mg/L
Hard
Lead
0.4 μg/L
Max: 5 μg/L
pH
7.8
6.5–8.5
Chlorine
0.9 mg/L
Max: 4 mg/L
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Compare filters · Water test kits · Hardness guide

Reading this page

Aurora water hardness is 130 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

Supply and treatment

How Aurora 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

Groundwater

Research confidence: medium

Source waters

  • groundwater

Treatment plants

  • Aurora Water Treatment Plant

    From municipal open data or regional estimate (verify locally).

Cited sources

Outbound municipal or utility citations pending. See methodology for how supply research is gathered.

Supply notes summarize published utility materials. They are not a substitute for the issuing authority's current notices or for a licensed tap test.

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

Compared to provincial average

Ontario · 123 cities in sample

Hardness (city vs Ontario avg)130 mg/L
pH (city vs Ontario avg)7.8
Lead (city vs Ontario avg)0.4 μg/L
Fluoride (city vs Ontario avg)0.6 mg/L

Provincial average: hardness 178 mg/L · pH 7.5 · lead 0.4 μg/L · fluoride 0.6 mg/L

Full parameters

ParameterReadingHealth Canada guidelineStatus
Hardness130 mg/LNo health limit (aesthetic)Compliant
pH7.86.5–8.5Compliant
Lead0.4 μg/L≤ 5 μg/LCompliant
Fluoride0.6 mg/L≤ 1.5 mg/LCompliant
Chlorine (free)0.9 mg/L≤ 4 mg/LCompliant
Turbidity2.1 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 Aurora — chlorine + hardness

Aurora pairs 130 mg/L hardness with 0.9 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

  • Brita 10-cup Elite pitcher
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  • SR SUN RISE 20-stage shower filter
    Aurora’s 0.9 mg/L chlorine — bestselling shower filter on Amazon.ca
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  • Frizzlife SW20 under-sink filter
    NSF 53 lead reduction for Aurora older plumbing
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  • Brita Elite replacement filters
    Six-month Elite cartridges for Aurora
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  • VARIFY hardness test strips
    130 mg/L at Aurora — pitchers do not soften; strips decide if you need a softener
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Source · York Region drinking water quality monitoring (2026 Q2 hardness table). Last updated 2026-10-07. Refreshed on the site's automated schedule.