Brookhaven-Amesbury Water Hardness & Quality Report (2026)
Water Hardness
180+ mg/L
Very Hardestimated · not lab-verified
Source
lake
pH Level
8.2
neutral = 7.0
Lead
0.001 mg/L
✓ Below action level
TDS
446.8 mg/L
Est. Daily Cost
$0.91
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 Brookhaven-Amesbury, your appliances are currently losing 45% efficiency due to mineral buildup.
| Appliance | In Brookhaven-Amesbury | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 4.7 yrs | 8.5 yrs | -45% |
| Washing Machine | 6.6 yrs | 12 yrs | -45% |
| Water Heater | 8.3 yrs | 15 yrs | -45% |
Regional Water Comparison
How Brookhaven-Amesbury compares to its nearest neighbours
| City | Hardness | Mineralization | Risk |
|---|---|---|---|
| ▶ Brookhaven-Amesbury, Ontario | ≈ 180+ mg/L | Very High | 🔴 Very Hard |
| Mount Dennis, Ontario | ≈ 180+ mg/L | Very High | 🔴 Very Hard |
| Maple Leaf, Ontario | ≈ 120–179 mg/L | High | 🟠 Hard |
| Keelesdale-Eglinton West, Ontario | ≈ 60–120 mg/L | High | 🟡 Moderately Hard |
| Rockcliffe-Smythe, Ontario | ≈ 120–179 mg/L | High | 🟠 Hard |
National Benchmark
How Brookhaven-Amesbury compares to the Canada average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Brookhaven-Amesbury | ≈ 180+ mg/L | 🔴 High |
| Canada National Avg | 140 mg/L | 🟠 Moderate |
| Vancouver Top Rated | 3 mg/L | 🟢 None |
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What Makes Brookhaven-Amesbury's Water Unique?
Local geology and source profile
City of Toronto Water Division supplies Brookhaven-Amesbury in northwest Toronto, Ontario, Canada, using the F.J. Horgan Water Treatment Plant. This facility draws its raw water from Lake Ontario, a major source within the Great Lakes basin. The treated lake water is then distributed to residential and commercial customers throughout the Brookhaven-Amesbury distribution zone, part of the larger Lawrence-Etobicoke supply corridor.
The Lake Ontario watershed is underlain by significant Paleozoic rock formations, specifically Ordovician to Silurian limestones and dolomites like the Manitoulin and Lockport dolomites. These sedimentary rocks are rich in minerals, and as water flows through or over them, it picks up calcium and magnesium ions. This natural geological process is the primary reason for the water's characteristically hard mineral content, a common trait in supplies drawn from this part of the Great Lakes region.
Residents may notice the impact of this hard water on household appliances and plumbing. Limescale buildup is a common issue, affecting kettles, water heaters, washing machines, and pipes, which can reduce efficiency and shorten their lifespan. Expect increased soap and detergent usage, potentially by as much as 32%, for effective cleaning. To combat scale, regular descaling of appliances and using vinegar rinses can help. Installing a water softener is often recommended to protect your fixtures and improve how well soaps and detergents perform.
Geology & Source: Precambrian Shield bedrock; Paleozoic limestone and dolostone (Ordovician-Silurian Manitoulin and Lockport dolomites) dissolve calcium and magnesium, creating hard water
Other Ontario Water Reports
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