Roncesvalles 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
587 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 Roncesvalles, your appliances are currently losing 31% efficiency due to mineral buildup.
| Appliance | In Roncesvalles | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 1.8 yrs | 8.5 yrs | -79% |
| Washing Machine | 4.9 yrs | 12 yrs | -59% |
| Water Heater | 6.2 yrs | 15 yrs | -59% |
Regional Water Comparison
How Roncesvalles compares to its nearest neighbours
| City | Hardness | Mineralization | Risk |
|---|---|---|---|
| ▶ Roncesvalles, Ontario | 235 mg/L | Very High | 🔴 Very Hard |
| South Parkdale, Ontario | 238 mg/L | Very High | 🔴 Very Hard |
| High Park-Swansea, Ontario | 242 mg/L | Very High | 🔴 Very Hard |
| Dovercourt-Wallace Emerson-Junction, Ontario | 237.5 mg/L | Very High | 🔴 Very Hard |
| Little Portugal, Ontario | 236 mg/L | Very High | 🔴 Very Hard |
National Benchmark
How Roncesvalles compares to the Canada average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Roncesvalles | 235 mg/L | 🔴 High |
| Canada National Avg | 141 mg/L | 🟠 Moderate |
| Vancouver Top Rated | 3 mg/L | 🟢 None |
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What Makes Roncesvalles's Water Unique?
Local geology and source profile
Roncesvalles (a west Toronto neighbourhood on Roncesvalles Avenue near Queen Street West — one of Toronto's most beloved urban villages, the historic heart of the Polish-Canadian community in the city and home to the vibrant 'Roncy' village strip of Polish delis, bakeries, and Milk Bar restaurants alongside craft breweries, book cafés, and the Revue Cinema — a charming, dense neighbourhood of Victorian rowhouses and semi-detached homes in the former Parkdale–West Toronto border zone) 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 235 mg/L (13.7 gpg) — classified as very hard by Health Canada, consistent with the west Toronto supply corridor.
Roncesvalles 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) as all Toronto boroughs. The 235 mg/L is consistent with the adjacent Little Portugal (236 mg/L) and Edenbridge-Humber Valley (237.5 mg/L) in the west Toronto F.J. Horgan distribution corridor.
At 235 mg/L, Roncesvalles residents face persistent scale challenges in this neighbourhood's dense Victorian and Edwardian rowhouse stock — 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 Polish-language resources relevant to this community. Health Canada lead service line precautionary guidance is strongly applicable in Roncesvalles' Victorian rowhouses, where original 1890s–1910s lead service connections are common and the City's lead service line replacement programme should be consulted.
Geology & Source: Supplied by City of Toronto from Lake Ontario via the F.J. Horgan Water Treatment Plant — the Roncesvalles west Toronto distribution zone carries very hard water at 235 mg/L (13.7 gpg), consistent with the Queen West–Roncesvalles supply corridor.