South Parkdale 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
598.3 mg/L
Est. Daily Cost
$0.63
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 Parkdale, your appliances are currently losing 32% efficiency due to mineral buildup.
| Appliance | In South Parkdale | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 1.7 yrs | 8.5 yrs | -80% |
| Washing Machine | 4.8 yrs | 12 yrs | -60% |
| Water Heater | 6.1 yrs | 15 yrs | -59% |
Regional Water Comparison
How South Parkdale compares to its nearest neighbours
| City | Hardness | Mineralization | Risk |
|---|---|---|---|
| ▶ South Parkdale, Ontario | 238 mg/L | Very High | 🔴 Very Hard |
| Little Portugal, Ontario | 236 mg/L | Very High | 🔴 Very Hard |
| Roncesvalles, Ontario | 235 mg/L | Very High | 🔴 Very Hard |
| Dufferin Grove, Ontario | 235 mg/L | Very High | 🔴 Very Hard |
| Dovercourt-Wallace Emerson-Junction, Ontario | 237.5 mg/L | Very High | 🔴 Very Hard |
National Benchmark
How South Parkdale compares to the Canada average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ South Parkdale | 238 mg/L | 🔴 High |
| Canada National Avg | 141 mg/L | 🟠 Moderate |
| Vancouver Top Rated | 3 mg/L | 🟢 None |
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What Makes South Parkdale's Water Unique?
Local geology and source profile
South Parkdale (a dense, gritty, and historically significant west Toronto neighbourhood along King Street West and Dufferin Street, south of the rail corridor — one of Toronto's most socioeconomically mixed communities, evolving from the 19th-century Parkdale resort town through decades as a rooming-house district and now experiencing significant gentrification pressure, with the Parkdale Community Food Bank and vibrant Tibetan, Somali, and Caribbean cultural communities) 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 238 mg/L (13.9 gpg) — classified as very hard by Health Canada, with TDS of 598 mg/L, consistent with the west Toronto lakeshore distribution corridor.
South Parkdale 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 from the Great Lakes basin) supplying all Toronto boroughs. The 238 mg/L is consistent with the adjacent South Riverdale (237.5 mg/L), High Park-Swansea (242 mg/L), and Stonegate-Queensway (240.5 mg/L), confirming the uniform very hard supply throughout Toronto's lakefront distribution zones.
At 238 mg/L, South Parkdale residents face persistent scale challenges — kettle and showerhead descaling every one to two weeks is typical. The neighbourhood's dense stock of Victorian and Edwardian rooming houses, converted mansions, and pre-war apartment buildings means that South Parkdale has among the highest density of pre-1940 plumbing infrastructure in Toronto. The City of Toronto's lead service line replacement programme at toronto.ca/water is particularly critical for this community; Health Canada precautionary guidance on lead and corrosion is strongly applicable throughout South Parkdale's heritage housing stock.
Geology & Source: Supplied by City of Toronto from Lake Ontario via the F.J. Horgan Water Treatment Plant — the South Parkdale west Toronto lakeshore distribution zone carries very hard water at 238 mg/L (13.9 gpg), consistent with the Parkdale–Roncesvalles supply corridor.