High Park North 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
583.5 mg/L
Est. Daily Cost
$0.62
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 High Park North, your appliances are currently losing 31% efficiency due to mineral buildup.
| Appliance | In High Park North | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 1.9 yrs | 8.5 yrs | -78% |
| Washing Machine | 4.9 yrs | 12 yrs | -59% |
| Water Heater | 6.2 yrs | 15 yrs | -59% |
Regional Water Comparison
How High Park North compares to its nearest neighbours
| City | Hardness | Mineralization | Risk |
|---|---|---|---|
| ▶ High Park North, Ontario | 234 mg/L | Very High | 🔴 Very Hard |
| Runnymede-Bloor West Village, Ontario | 239 mg/L | Very High | 🔴 Very Hard |
| Junction Area, Ontario | 237.5 mg/L | Very High | 🔴 Very Hard |
| High Park-Swansea, Ontario | 242 mg/L | Very High | 🔴 Very Hard |
| Weston-Pellam Park, Ontario | 239.5 mg/L | Very High | 🔴 Very Hard |
National Benchmark
How High Park North compares to the Canada average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ High Park North | 234 mg/L | 🔴 High |
| Canada National Avg | 141 mg/L | 🟠 Moderate |
| Vancouver Top Rated | 3 mg/L | 🟢 None |
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What Makes High Park North's Water Unique?
Local geology and source profile
High Park North (a charming west Toronto neighbourhood adjacent to the north edge of High Park, centred on Bloor Street West near Keele Street and the Roncesvalles and Bloor West Village commercial strips — known for its diverse architectural character, century-old homes, and proximity to the park's 399 acres of urban forest and Grenadier Pond) 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 in this distribution zone is 234 mg/L (13.7 gpg) — classified as very hard by Health Canada, with TDS of 584 mg/L, consistent with the west Toronto distribution corridor.
High Park North receives F.J. Horgan plant Lake Ontario supply through the west Toronto distribution network — the same characteristically very hard Lake Ontario source (dissolved Silurian and Devonian carbonate) as all Toronto boroughs. The 234 mg/L is consistent with the adjacent High Park-Swansea (242 mg/L) and Rockcliffe-Smythe (238.5 mg/L), confirming the uniform very hard supply throughout the Bloor West and High Park distribution area.
At 234 mg/L, High Park North residents face persistent scale challenges in one of Toronto's most desirable and competitively priced family neighbourhoods. Kettle and showerhead descaling every one to two weeks is typical. The neighbourhood's large stock of early 20th-century homes along Gothic Avenue, Glenlake Avenue, and the streets north of Bloor includes many pre-1940 properties where the City of Toronto's lead service line replacement programme is highly relevant. Residents are encouraged to review lead service line status at toronto.ca/water.
Geology & Source: Supplied by City of Toronto from Lake Ontario via the F.J. Horgan Water Treatment Plant — the High Park North west Toronto distribution zone carries very hard water at 234 mg/L (13.7 gpg), consistent with the Bloor West Village and Roncesvalles supply corridor.