Woodstock Water Hardness & Quality Report (2026)
Water Hardness
Source
lake
pH Level
7.7
neutral = 7.0
Lead
0.001 mg/L
✓ Below action level
TDS
349.5 mg/L
Est. Daily Cost
$0.47
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 Woodstock, your appliances are currently losing 23% efficiency due to mineral buildup.
| Appliance | In Woodstock | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 3.8 yrs | 8.5 yrs | -55% |
| Washing Machine | 7.1 yrs | 12 yrs | -41% |
| Water Heater | 8.6 yrs | 15 yrs | -43% |
Regional Water Comparison
How Woodstock compares to its nearest neighbours
| City | Hardness | Mineralization | Risk |
|---|---|---|---|
| ▶ Woodstock, Ontario | 174.5 mg/L | High | 🟠 Hard |
| Ingersoll, Ontario | 182.5 mg/L | High | 🔴 Very Hard |
| New Hamburg, Ontario | 229 mg/L | Very High | 🔴 Very Hard |
| Tillsonburg, Ontario | 199.5 mg/L | Very High | 🔴 Very Hard |
| Stratford, Ontario | 266 mg/L | Very High | 🔴 Very Hard |
National Benchmark
How Woodstock compares to the Canada average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Woodstock | 174.5 mg/L | 🟠 Moderate |
| Canada National Avg | 141 mg/L | 🟠 Moderate |
| Vancouver Top Rated | 3 mg/L | 🟢 None |
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What Makes Woodstock's Water Unique?
Local geology and source profile
Woodstock's drinking water is managed by the City of Woodstock, drawing from Lake Erie via the Elgin Area Primary Water Supply System — a regional water supply pipeline that delivers Lake Erie source water to municipalities in Oxford and Elgin Counties. Water is treated using coagulation, sedimentation, filtration, UV disinfection, and chloramination, meeting all Guidelines for Canadian Drinking Water Quality (GCDWQ) requirements. Hardness measures 174.5 mg/L (10.2 gpg) — classified as hard by Health Canada, reflecting Lake Erie's characteristically calcareous water combined with the Silurian and Devonian carbonate and evaporite geology of the southwestern Ontario plain.
Woodstock's Lake Erie source water draws from the same general Lake Erie basin that produces very hard water in Chatham (297.5 mg/L) and St. Thomas (309 mg/L) — but the longer pipeline transmission distance to Oxford County, combined with treatment processes, results in a somewhat lower measured hardness at Woodstock's tap. Lake Erie's water carries dissolved calcium from the basin's pervasive Silurian and Devonian limestone, dolostone, and Salina Formation evaporite geology of the Michigan Basin and Appalachian Plateau.
At 174.5 mg/L, Woodstock homeowners experience regular scale deposits on kettle elements, showerheads, and in hot water tanks — monthly descaling is typical. Annual hot water tank inspection and flushing are recommended to maintain heating efficiency. Woodstock, as Oxford County's industrial and commercial centre, provides water quality information at cityofwoodstock.ca; residents are advised to consider scale treatment options given the consistent hard water characteristic of the Elgin Area pipeline supply system.
Geology & Source: Supplied by City of Woodstock from Lake Erie via the Elgin Area Primary Water Supply System — Lake Erie supply supplemented by the Silurian and Devonian carbonate geology of the southwestern Ontario plain produces hard water at 174.5 mg/L (10.2 gpg).