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OpenStats picks for Coquitlam — everyday tap water
Coquitlam's 22 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.
Coquitlam tap water: Grade A, hardness 22 mg/L
By OpenStats · Built from official Canadian sources
Direct municipal dataA
Water quality grade
Excellent
Graded against Health Canada drinking water guidelines
Lead within guidelinepH in range
Hardness vs provincial average22 mg/L · prov. avg 142 mg/L
Lead vs provincial average0.1 μg/L · prov. avg 0.4 μg/L
Hardness
22 mg/L
Lead
0.1 μg/L
≤ 5 μg/L
pH
7.6
6.5–8.5 range
Hardness
22 mg/L
Soft
Lead
0.1 μg/L
Max: 5 μg/L
pH
7.6
6.5–8.5
Chlorine
0.6 mg/L
Max: 4 mg/L
SponsoredAlso consider
Brita Denali pitcher
OpenStats pick for Coquitlam’s 22 mg/L supply — taste, not minerals
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Waterdrop 15UA under-sink filter
Under-sink carbon for Coquitlam
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VARIFY 17-in-1 test kit
Baseline Coquitlam tap water before RO
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Waterdrop filtration systems
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Reading this page
Coquitlam water hardness is 22 mg/L with pH 7.6.
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 Coquitlam 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
Coquitlam 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
British Columbia · 58 cities in sample
Hardness (city vs British Columbia avg)22 mg/L
pH (city vs British Columbia avg)7.6
Lead (city vs British Columbia avg)0.1 μg/L
Fluoride (city vs British Columbia avg)0.5 mg/L
Provincial average: hardness 142 mg/L · pH 7.6 · lead 0.4 μg/L · fluoride 0.6 mg/L
Full parameters
| Parameter | Reading | Health Canada guideline | Status |
|---|---|---|---|
| Hardness | 22 mg/L | No health limit (aesthetic) | Compliant |
| pH | 7.6 | 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 | 1 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 Coquitlam — everyday tap water
Coquitlam's 22 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 Coquitlam’s 22 mg/L supply — taste, not minerals
- Shop on Amazon.caWaterdrop 15UA under-sink filterUnder-sink carbon for Coquitlam
- Shop on Amazon.caVARIFY 17-in-1 test kitBaseline Coquitlam tap water before RO
Source · Metro Vancouver GVWD water quality annual report. Last updated 2026-10-07. Refreshed on the site's automated schedule.