Downsview-Roding-CFB Water Hardness & Quality Report (2026)
Water Hardness
180+ mg/L
Very Hardestimated · not lab-verified
Source
lake
pH Level
8.1
neutral = 7.0
Lead
0.001 mg/L
✓ Below action level
TDS
339.4 mg/L
Est. Daily Cost
$0.91
energy & soap waste
Source: Health Canada Water Quality · Updated 2026
0–60
mg/L
Soft
61–120
mg/L
Moderately Hard
121–180
mg/L
Hard
180+
mg/L
Very Hard
Appliance Damage Report
In Downsview-Roding-CFB, your appliances are currently losing 45% efficiency due to mineral buildup.
| Appliance | In Downsview-Roding-CFB | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 4.7 yrs | 8.5 yrs | -45% |
| Washing Machine | 6.6 yrs | 12 yrs | -45% |
| Water Heater | 8.3 yrs | 15 yrs | -45% |
Regional Water Comparison
How Downsview-Roding-CFB compares to its nearest neighbours
| City | Hardness | Mineralization | Risk |
|---|---|---|---|
| ▶ Downsview-Roding-CFB, Ontario | ≈ 180+ mg/L | Very High | 🔴 Very Hard |
| Maple Leaf, Ontario | ≈ 120–179 mg/L | High | 🟠 Hard |
| Glenfield-Jane Heights, Ontario | ≈ 120–179 mg/L | High | 🟠 Hard |
| Brookhaven-Amesbury, Ontario | ≈ 180+ mg/L | Very High | 🔴 Very Hard |
| York University Heights, Ontario | ≈ 120–179 mg/L | High | 🟠 Hard |
National Benchmark
How Downsview-Roding-CFB compares to the Canada average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Downsview-Roding-CFB | ≈ 180+ mg/L | 🔴 High |
| Canada National Avg | 140 mg/L | 🟠 Moderate |
| Vancouver Top Rated | 3 mg/L | 🟢 None |
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What Makes Downsview-Roding-CFB's Water Unique?
Local geology and source profile
North Toronto's Downsview-Roding-CFB community, centered around the former Canadian Forces Base Downsview site and Downsview Park, receives its drinking water from the City of Toronto Water division. The supply originates from Lake Ontario, drawn into the F.J. Horgan Water Treatment Plant situated on the lake's eastern shore. This facility is a key part of the city's northwest distribution network, serving the residents and businesses in this developing area. The water's journey begins in the Lake Ontario watershed, a landscape profoundly shaped by the Niagara Escarpment and the underlying Paleozoic bedrock formations.
The geology of the Lake Ontario watershed is dominated by limestone and dolostone bedrock, particularly prominent in the Niagara Escarpment. These Paleozoic carbonate formations naturally dissolve over time, releasing calcium and magnesium into the surface water. The regional geology of southern Ontario's Great Lakes basin, characterized by karstic limestone aquifers and glacial till overlying Ordovician-Silurian bedrock, further contributes to the water's high mineral content. Because this system relies on surface water from the lake, its hardness is directly influenced by the mineral-rich runoff from these rock types.
Homeowners in Downsview-Roding-CFB will likely notice the effects of this very hard water on their plumbing and appliances. Heavy limescale buildup is common in pipes, hot water heaters, dishwashers, and washing machines, which can decrease their efficiency and shorten their lifespan. You might also see spotting on kettles and coffee makers, and calcium deposits forming in showerheads. Regular descaling of appliances with vinegar can help, but installing a water softener is highly recommended to combat soap inefficiency, fabric wear, and general appliance damage. Despite its hardness, the water quality meets all federal standards, with safe levels of lead and no notable contaminants exceeding limits, ensuring it is safe to drink.
Geology & Source: Lake Ontario watershed; limestone and dolostone bedrock of the Niagara Escarpment produce high hardness
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