Corso Italia-Davenport 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
596.8 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 Corso Italia-Davenport, your appliances are currently losing 32% efficiency due to mineral buildup.
| Appliance | In Corso Italia-Davenport | 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 Corso Italia-Davenport compares to its nearest neighbours
| City | Hardness | Mineralization | Risk |
|---|---|---|---|
| ▶ Corso Italia-Davenport, Ontario | 237 mg/L | Very High | 🔴 Very Hard |
| Oakwood Village, Ontario | 185.5 mg/L | High | 🔴 Very Hard |
| Weston-Pellam Park, Ontario | 239.5 mg/L | Very High | 🔴 Very Hard |
| Dovercourt-Wallace Emerson-Junction, Ontario | 237.5 mg/L | Very High | 🔴 Very Hard |
| Briar Hill-Belgravia, Ontario | 238 mg/L | Very High | 🔴 Very Hard |
National Benchmark
How Corso Italia-Davenport compares to the Canada average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Corso Italia-Davenport | 237 mg/L | 🔴 High |
| Canada National Avg | 141 mg/L | 🟠 Moderate |
| Vancouver Top Rated | 3 mg/L | 🟢 None |
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What Makes Corso Italia-Davenport's Water Unique?
Local geology and source profile
Corso Italia-Davenport (a west-central Toronto neighbourhood on St. Clair Avenue West between Dufferin and Lansdowne — the 'Corso Italia' Italian promenade on St. Clair, the historic heart of Toronto's Italian-Canadian community established by post-war immigrants from Calabria, Sicily, and Abruzzo, where the sidewalks fill with outdoor café patrons during the FIFA World Cup viewing, the annual Ferragosto festival, and the year-round commerce of Italian bakeries, butchers, and espresso bars on the Toronto's most vibrant Italian commercial strip) 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 237 mg/L (13.8 gpg) — classified as very hard by Health Canada, consistent with the west-central Toronto supply corridor.
Corso Italia-Davenport receives F.J. Horgan plant Lake Ontario supply through the west-central Toronto distribution — 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 Humewood-Cedarvale (236 mg/L) and Briar Hill-Belgravia (238 mg/L) in the St. Clair West–Dufferin distribution corridor.
At 237 mg/L, Corso Italia-Davenport residents face persistent scale challenges in this neighbourhood's dense Italian heritage storefronts and semi-detached homes — kettle and showerhead descaling every one to two weeks is typical. The City of Toronto provides multilingual water quality information at toronto.ca/water, including Italian-language resources relevant to this community. Health Canada lead service line precautionary guidance applies to the neighbourhood's pre-war and post-war housing stock for pre-1955 properties.
Geology & Source: Supplied by City of Toronto from Lake Ontario via the F.J. Horgan Water Treatment Plant — the Corso Italia-Davenport west-central Toronto distribution zone carries very hard water at 237 mg/L (13.8 gpg), consistent with the St. Clair West–Dufferin supply corridor.