Sponsored
Drinking water filters and test kits
Pitcher and under-sink filters, plus hardness strips and TDS meters for tap checks.
Cobourg Drinking Water Quality
By OpenStats · Built from official Canadian sources
Regional estimateB
Water quality grade
Good
Graded against Health Canada drinking water guidelines
Lead within guidelinepH in range
Hardness vs provincial average91 mg/L · prov. avg 182 mg/L
Lead vs provincial average0.3 μg/L · prov. avg 0.4 μg/L
Hardness
91 mg/L
Lead
0.3 μg/L
≤ 5 μg/L
pH
7.9
6.5–8.5 range
Hardness
91 mg/L
Moderate
Lead
0.3 μg/L
Max: 5 μg/L
pH
7.9
6.5–8.5
Chlorine
0.8 mg/L
Max: 4 mg/L
From source to sink
Where Cobourg water comes from
Lakes, rivers, wells, and treatment plants behind the kitchen tap, in plain language. Chemistry grades above are a separate lab snapshot; this section is the route the water travels.
Open the full tap storyOn the map
Where Cobourg water lives
Source waters and treatment plants pinned from published utility names. Open a pin below for the full OpenStreetMap view.
- CityCobourg
Municipal service area
- Source waterLake Ontario
Source water
- Treatment plantCobourg Water Treatment Plant
Approximate pin near Cobourg (exact plant coordinates pending)
Map data © OpenStreetMap contributors. Pins are approximate for orientation, not legal survey points.
Where it starts
Surface water
Research confidence: medium
Named source waters
- Lake Ontario
Treatment plants
Cobourg Water Treatment Plant
Lake Ontario surface plant serving the Town of Cobourg with filtration treatment and chlorine residual distribution typical of north-shore Great Lakes plants.
How it reaches your street
Town-operated distribution with lakeside intake and in-town storage/pumping.
SponsoredAlso consider
Water filter pitcher
Popular everyday tap filter
SponsoredAlso consider
Brita replacement filters
Recurring purchase
SponsoredAlso consider
Under-sink water filter
Higher capacity drinking water
SponsoredAlso consider
Reverse osmosis system
High-ticket under-sink upgrade
As an Amazon Associate, OpenStats earns from qualifying purchases.
Partner
Lab water test for Cobourg taps
Municipal reports cover the plant. A Tap Score kit tests the water at a Cobourg tap for a broader contaminant panel.
Lab kit partner link. We may earn a commission when tracking is active.
Partner
Waterdrop filtration systems
Under-sink and RO systems from Waterdrop Canada — a direct brand alternative to marketplace filters.
Waterdrop affiliate link. We may earn a commission.
Reading this page
Cobourg's most recent drinking water sample (2026-07-22) reports hardness of 91 mg/L, classified as moderately hard, and pH 7.9, drawn from a mixed water source and treated at Cobourg Water Treatment Plant. Lead measured 0.3 μg/L and fluoride 0.7 mg/L.
Free chlorine measured 0.8 mg/L in this sample. No E. coli was detected in this sample.
Cobourg's hardness of 91 mg/L is below the Ontario average of 182 mg/L across 51 tracked municipalities, with a provincial average pH of 7.5.
These readings summarize a single compliance snapshot, not a certification of the water reaching your tap. Test your own water periodically, especially on a private well, and consider a softener if hardness is classified hard or very hard.
How to use this page: read the headline metrics first, then where the water comes from (map and tap story), then the parameter table and source footer.
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 · From source to sink
How drinking water reaches your tap
Compared to provincial average
Ontario · 51 cities in sample
Hardness (city vs Ontario avg)91 mg/L
pH (city vs Ontario avg)7.9
Lead (city vs Ontario avg)0.3 μg/L
Fluoride (city vs Ontario avg)0.7 mg/L
Provincial average: hardness 182 mg/L · pH 7.5 · lead 0.4 μg/L · fluoride 0.6 mg/L
Full parameters
| Parameter | Reading | Health Canada guideline | Status |
|---|---|---|---|
| Hardness | 91 mg/L | No health limit (aesthetic) | Compliant |
| pH | 7.9 | 6.5–8.5 | Compliant |
| Lead | 0.3 μg/L | ≤ 5 μg/L | Compliant |
| Fluoride | 0.7 mg/L | ≤ 1.5 mg/L | Compliant |
| Chlorine (free) | 0.8 mg/L | ≤ 4 mg/L | Compliant |
| Turbidity | 1.2 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 →Drinking water filters and test kits
Pitcher and under-sink filters, plus hardness strips and TDS meters for tap checks.
As an Amazon Associate, OpenStats earns from qualifying purchases.
· Compare options- Shop on Amazon.caWater filter pitcherPopular everyday tap filter
- Shop on Amazon.caBrita replacement filtersRecurring purchase
- Shop on Amazon.caUnder-sink water filterHigher capacity drinking water
- Shop on Amazon.caReverse osmosis systemHigh-ticket under-sink upgrade
- Shop on Amazon.caShower filterChlorine at the showerhead
- Shop on Amazon.caWater test kitLead, pH, and hardness spot-check
- Shop on Amazon.caTDS meterQuick dissolved-solids readout
- Shop on Amazon.caWater hardness test stripsQuick tap reading
Source · ECCC / municipal open data (seed). Last updated 2026-07-22. Refreshed on the site's automated schedule.