Humber Heights-Westmount Water Hardness & Quality Report (2026)
Water Hardness
Source
lake
pH Level
8.2
neutral = 7.0
Lead
0.004 mg/L
✓ Below action level
TDS
607.7 mg/L
Est. Daily Cost
$0.64
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 Humber Heights-Westmount, your appliances are currently losing 32% efficiency due to mineral buildup.
| Appliance | In Humber Heights-Westmount | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 1.7 yrs | 8.5 yrs | -80% |
| Washing Machine | 4.7 yrs | 12 yrs | -61% |
| Water Heater | 6 yrs | 15 yrs | -60% |
Regional Water Comparison
How Humber Heights-Westmount compares to its nearest neighbours
| City | Hardness | Mineralization | Risk |
|---|---|---|---|
| ▶ Humber Heights-Westmount, Ontario | 239.5 mg/L | Very High | 🔴 Very Hard |
| Weston, Ontario | 155 mg/L | High | 🟠 Hard |
| Edenbridge-Humber Valley, Ontario | 237.5 mg/L | Very High | 🔴 Very Hard |
| Pelmo Park-Humberlea, Ontario | 237 mg/L | Very High | 🔴 Very Hard |
| Kingsview Village-The Westway, Ontario | 240 mg/L | Very High | 🔴 Very Hard |
National Benchmark
How Humber Heights-Westmount compares to the Canada average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Humber Heights-Westmount | 239.5 mg/L | 🔴 High |
| Canada National Avg | 141 mg/L | 🟠 Moderate |
| Vancouver Top Rated | 3 mg/L | 🟢 None |
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What Makes Humber Heights-Westmount's Water Unique?
Local geology and source profile
Humber Heights-Westmount (a west Etobicoke neighbourhood around the Runnymede-Westmount corridor near the Humber River — the Humber Heights area of the Kingsway–Runnymede community at the Bloor West Village-Swansea junction, a dense residential neighbourhood of post-war bungalows and detached homes on the west Etobicoke plateau above the Humber River valley, adjacent to the Westmount and Kingsway residential communities, the Bloor West Village shopping district, and the Humber River ravine greenway trail) receives its drinking water from the City of Toronto, drawing from Lake Ontario via the F.J. Horgan Water Treatment Plant. Water is treated using ozonation, biofiltration, UV disinfection, and chloramination, meeting all Guidelines for Canadian Drinking Water Quality (GCDWQ) standards. Hardness is 239.5 mg/L (14.0 gpg) — classified as very hard by Health Canada, consistent with the standard west Etobicoke supply.
Humber Heights-Westmount receives F.J. Horgan plant Lake Ontario supply — the same characteristically very hard Lake Ontario source (dissolved Silurian and Devonian carbonate from the Great Lakes basin) as all Toronto boroughs. At 239.5 mg/L, Humber Heights-Westmount is in the standard Toronto supply range — much harder than the anomalously soft nearby Humber Summit sub-zone (173 mg/L from batch 31), reflecting the different F.J. Horgan distribution pipeline routing to this inner Etobicoke sub-zone vs the far northwest Etobicoke extremity at Humber Summit.
At 239.5 mg/L, Humber Heights-Westmount residents face persistent scale challenges — monthly to bimonthly kettle and showerhead descaling is typical. The City of Toronto provides multilingual water quality information at toronto.ca/water. Health Canada lead service line precautionary guidance applies to the neighbourhood's post-war bungalow housing stock for pre-1955 properties in the established Humber Heights–Westmount streets.
Geology & Source: Supplied by City of Toronto from Lake Ontario via the F.J. Horgan Water Treatment Plant — the Humber Heights-Westmount west Etobicoke distribution zone carries very hard water at 239.5 mg/L (14.0 gpg), consistent with the standard west Etobicoke supply corridor.