Tecumseh Water Hardness & Quality Report (2026)
Water Hardness
Source
lake
pH Level
8.3
neutral = 7.0
Lead
0.003 mg/L
✓ Below action level
TDS
650.9 mg/L
Est. Daily Cost
$0.72
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 Tecumseh, your appliances are currently losing 36% efficiency due to mineral buildup.
| Appliance | In Tecumseh | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 1.5 yrs | 8.5 yrs | -82% |
| Washing Machine | 3.6 yrs | 12 yrs | -70% |
| Water Heater | 5 yrs | 15 yrs | -67% |
Regional Water Comparison
How Tecumseh compares to its nearest neighbours
| City | Hardness | Mineralization | Risk |
|---|---|---|---|
| ▶ Tecumseh, Ontario | 271.5 mg/L | Very High | 🔴 Very Hard |
| Windsor, Ontario | 145 mg/L | High | 🟠 Hard |
| LaSalle, Ontario | 340 mg/L | Very High | 🔴 Very Hard |
| Kingsville, Ontario | 301 mg/L | Very High | 🔴 Very Hard |
| Amherstburg, Ontario | 317 mg/L | Very High | 🔴 Very Hard |
National Benchmark
How Tecumseh compares to the Canada average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Tecumseh | 271.5 mg/L | 🔴 High |
| Canada National Avg | 141 mg/L | 🟠 Moderate |
| Vancouver Top Rated | 3 mg/L | 🟢 None |
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What Makes Tecumseh's Water Unique?
Local geology and source profile
Tecumseh's drinking water is managed by the Town of Tecumseh, drawing from Lake St. Clair via the Essex Region water supply system — the same source serving the Windsor metropolitan area. Water undergoes coagulation, sedimentation, filtration, UV disinfection, and chloramination, meeting all Guidelines for Canadian Drinking Water Quality (GCDWQ) requirements. Hardness measures 271.5 mg/L (15.9 gpg) — classified as very hard by Health Canada, with TDS of 651 mg/L — consistent with the Essex County Lake St. Clair supply corridor (Windsor 255 mg/L from batch 4), which produces some of Ontario's hardest municipal water.
Lake St. Clair is a shallow connecting body (mean depth 3.4 m) between Lake Huron and Lake Erie — receiving outflow from the upper Great Lakes and discharging into Lake Erie. The lake's extreme shallowness (compared to Lake Huron 59 m mean depth, Lake Ontario 86 m) means water spends longer in contact with the highly soluble Devonian limestone and dolostone and carbonate sediments of the Lake St. Clair basin floor, accumulating dissolved calcium to very high levels. Tecumseh's 271.5 mg/L — harder than the central Windsor reading of 255 mg/L — likely reflects the sub-zone distribution characteristics in the eastern Tecumseh waterfront intake area.
At 271.5 mg/L, Tecumseh homeowners face persistent scale challenges — kettle elements and showerheads require frequent weekly cleaning. Hot water tanks accumulate significant scale; annual inspection and flushing are strongly recommended. A whole-home water softener is a widespread appliance throughout the Essex County Lake St. Clair supply region. The Town of Tecumseh provides water quality information at tecumseh.ca.
Geology & Source: Supplied by Town of Tecumseh from Lake St. Clair via the ERCA (Essex Region Conservation Authority) regional supply — Lake St. Clair water from the shallow Great Lakes connecting channel between Lake Huron and Lake Erie, with high carbonate and evaporite mineral content, produces very hard water at 271.5 mg/L (15.9 gpg).