Highland Creek Water Hardness & Quality Report (2026)
Water Hardness
~120–179 mg/L
Hardestimated · not lab-verified
Source
lake
pH Level
7.7
neutral = 7.0
Lead
0.002 mg/L
✓ Below action level
TDS
256 mg/L
Est. Daily Cost
$0.40
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 Highland Creek, your appliances are currently losing 20% efficiency due to mineral buildup.
| Appliance | In Highland Creek | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 6.8 yrs | 8.5 yrs | -20% |
| Washing Machine | 9.6 yrs | 12 yrs | -20% |
| Water Heater | 12 yrs | 15 yrs | -20% |
Regional Water Comparison
How Highland Creek compares to its nearest neighbours
| City | Hardness | Mineralization | Risk |
|---|---|---|---|
| ▶ Highland Creek, Ontario | ≈ 120–179 mg/L | High | 🟠 Hard |
| Rouge, Ontario | ≈ 120–179 mg/L | High | 🟠 Hard |
| West Hill, Ontario | ≈ 120–179 mg/L | High | 🟠 Hard |
| Centennial Scarborough, Ontario | ≈ 120–179 mg/L | High | 🟠 Hard |
| Morningside, Ontario | ≈ 180+ mg/L | Very High | 🔴 Very Hard |
National Benchmark
How Highland Creek compares to the Canada average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Highland Creek | ≈ 120–179 mg/L | 🟠 Moderate |
| Canada National Avg | 140 mg/L | 🟠 Moderate |
| Vancouver Top Rated | 3 mg/L | 🟢 None |
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What Makes Highland Creek's Water Unique?
Local geology and source profile
While no specific water utility has been officially identified for Highland Creek, Ontario, the area appears to be served by the City of Toronto. Water is drawn from Lake Ontario and processed at the R.C. Harris Water Treatment Plant before distribution to the far-east Scarborough sub-zone, which includes Highland Creek. This particular distribution area is known for carrying anomalously hard water, registering at 15.1 grains per gallon. This places it at the higher end of a cluster of sub-zones in east Scarborough exhibiting harder water characteristics.
The geology underlying the Highland Creek watershed is typical of the southern Ontario region. It features Paleozoic limestone and dolomite formations. Runoff from these limestone-rich bedrock areas contributes dissolved minerals to the surface waters, influencing the general water character. While specific aquifer or rock formation details directly tied to the drinking water supply are not confirmed, the regional geology is known to impart moderate mineralization from limestone runoff.
Homeowners in this area may notice the effects of hard water on their appliances and plumbing. Scale buildup is common in hot water heaters, boilers, and faucets, potentially reducing appliance efficiency and lifespan. You might also find that soap doesn't lather as well, and dishes can come out spotty after washing. Regular cleaning with vinegar can help manage deposits. For persistent issues, installing a water softener is often recommended when hardness levels are above moderate. This is above moderately hard levels.
Geology & Source: Southern Ontario Paleozoic limestone and dolomite; limestone runoff contributes moderate mineralization and hardness
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