Mount Pleasant East 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
598.4 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 Mount Pleasant East, your appliances are currently losing 32% efficiency due to mineral buildup.
| Appliance | In Mount Pleasant East | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 1.8 yrs | 8.5 yrs | -79% |
| Washing Machine | 4.8 yrs | 12 yrs | -60% |
| Water Heater | 6.1 yrs | 15 yrs | -59% |
Regional Water Comparison
How Mount Pleasant East compares to its nearest neighbours
| City | Hardness | Mineralization | Risk |
|---|---|---|---|
| ▶ Mount Pleasant East, Ontario | 237 mg/L | Very High | 🔴 Very Hard |
| Mount Pleasant West, Ontario | 235.5 mg/L | Very High | 🔴 Very Hard |
| Toronto, Ontario | 124 mg/L | High | 🟠 Hard |
| Yonge-Eglinton, Ontario | 238 mg/L | Very High | 🔴 Very Hard |
| Leaside-Bennington, Ontario | 237 mg/L | Very High | 🔴 Very Hard |
National Benchmark
How Mount Pleasant East compares to the Canada average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Mount Pleasant East | 237 mg/L | 🔴 High |
| Canada National Avg | 141 mg/L | 🟠 Moderate |
| Vancouver Top Rated | 3 mg/L | 🟢 None |
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What Makes Mount Pleasant East's Water Unique?
Local geology and source profile
Mount Pleasant East (the eastern half of the Mount Pleasant neighbourhood in midtown Toronto — centred around Davisville Avenue and Mount Pleasant Road, one of Toronto's most desirable midtown residential areas, home to the Mt. Pleasant Cemetery (the final resting place of many Canadian luminaries including William Lyon Mackenzie King and Glenn Gould), a mix of brick Edwardian detached homes, boutique apartment buildings, and the busy Mount Pleasant Village commercial district) receives its drinking water from the City of Toronto, drawing from Lake Ontario via the R.C. Harris 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 237 mg/L (13.8 gpg) — classified as very hard by Health Canada, with TDS of 598 mg/L, consistent with the midtown Toronto supply corridor.
Mount Pleasant East receives R.C. Harris plant Lake Ontario supply through the midtown Toronto distribution network — the same characteristically very hard Lake Ontario source (dissolved Silurian and Devonian carbonate from the Great Lakes basin) as all Toronto boroughs. The 237 mg/L is consistent with the adjacent Leaside-Bennington (237 mg/L), Rosedale-Moore Park (238 mg/L), and other midtown–East York supply corridor communities.
At 237 mg/L, Mount Pleasant East residents face persistent scale challenges in this neighbourhood's substantial Edwardian and Arts and Crafts brick housing stock — kettle and showerhead descaling every one to two weeks is typical. The City of Toronto provides water quality information at toronto.ca/water. Mount Pleasant East's elegant pre-1940 residential homes present a high likelihood of original lead service infrastructure, making Health Canada lead service line precautionary guidance and the City's replacement programme strongly applicable throughout this neighbourhood.
Geology & Source: Supplied by City of Toronto from Lake Ontario via the R.C. Harris Water Treatment Plant — the Mount Pleasant East midtown Toronto distribution zone carries very hard water at 237 mg/L (13.8 gpg), consistent with the Davisville–Yonge midtown supply corridor.