South Riverdale Water Hardness & Quality Report (2026)
Water Hardness
180+ mg/L
Very Hardestimated · not lab-verified
Source
lake
pH Level
8.6
neutral = 7.0
Lead
0.001 mg/L
✓ Below action level
TDS
653.3 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 South Riverdale, your appliances are currently losing 45% efficiency due to mineral buildup.
| Appliance | In South Riverdale | 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 South Riverdale compares to its nearest neighbours
| City | Hardness | Mineralization | Risk |
|---|---|---|---|
| ▶ South Riverdale, Ontario | ≈ 180+ mg/L | Very High | 🔴 Very Hard |
| North Riverdale, Ontario | ≈ 120–179 mg/L | High | 🟠 Hard |
| Regent Park, Ontario | ≈ 120–179 mg/L | High | 🟠 Hard |
| Greenwood-Coxwell, Ontario | ≈ 120–179 mg/L | High | 🟠 Hard |
| Woodbine Corridor, Ontario | ≈ 120–179 mg/L | High | 🟠 Hard |
National Benchmark
How South Riverdale compares to the Canada average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ South Riverdale | ≈ 180+ mg/L | 🔴 High |
| Canada National Avg | 140 mg/L | 🟠 Moderate |
| Vancouver Top Rated | 3 mg/L | 🟢 None |
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What Makes South Riverdale's Water Unique?
Local geology and source profile
South Riverdale in Toronto, Ontario, Canada, gets its municipal water from Toronto Water. This utility draws primarily from Lake Ontario, with water treated at major facilities like the R.C. Harris Water Treatment Plant and the F.J. Horgan Plant. The supply serves millions of residents across Toronto and nearby areas, utilizing a mixed system that relies mainly on surface water from the Lake Ontario watershed, part of the Great Lakes Basin. Some outlying areas may receive a small amount of groundwater.
The bedrock beneath South Riverdale is rich in Paleozoic limestone and dolomite, including formations such as the Lockport Dolomite and Georgian Bay Formation. As this rock weathers, it releases calcium and magnesium into the water. Lake Ontario itself receives mineral input from runoff across the Niagara Escarpment. Even the limited groundwater sources in the region tap into these hard, mineral-laden bedrock layers, contributing to the water's characteristically hard nature.
Homeowners in areas like South Riverdale may notice faster scale buildup in appliances such as water heaters, coffee makers, and dishwashers due to the water's hardness. This can reduce efficiency and shorten the lifespan of these devices. You might also observe issues like spotted glassware or difficulty getting a good lather from soaps and detergents. Regularly flushing your water heater and using descaling solutions can help. Installing a water softener is a highly recommended step to significantly reduce these effects and protect your home's plumbing and appliances.
Geology & Source: Southwestern Ontario limestone and dolomite; Paleozoic formations like Lockport Dolomite and Georgian Bay Formation; high mineral dissolution results in hard water
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