Owen Sound Water Hardness & Quality Report (2026)
Water Hardness
~0–59 mg/L
Softestimated · not lab-verified
Source
lake
pH Level
7
neutral = 7.0
Lead
0.004 mg/L
✓ Below action level
TDS
21 mg/L
Est. Daily Cost
$0.08
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 Owen Sound, your appliances are currently losing 4% efficiency due to mineral buildup.
| Appliance | In Owen Sound | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 8.2 yrs | 8.5 yrs | -4% |
| Washing Machine | 11.5 yrs | 12 yrs | -4% |
| Water Heater | 14.4 yrs | 15 yrs | -4% |
Regional Water Comparison
How Owen Sound compares to its nearest neighbours
| City | Hardness | Mineralization | Risk |
|---|---|---|---|
| ▶ Owen Sound, Ontario | ≈ 0–59 mg/L | Low | 🟢 Soft |
| Collingwood, Ontario | ≈ 60–120 mg/L | High | 🟡 Moderately Hard |
| North Perth, Ontario | ≈ 180+ mg/L | Very High | 🔴 Very Hard |
| Wasaga Beach, Ontario | ≈ 180+ mg/L | Very High | 🔴 Very Hard |
| Fergus, Ontario | ≈ 180+ mg/L | Very High | 🔴 Very Hard |
National Benchmark
How Owen Sound compares to the Canada average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Owen Sound | ≈ 0–59 mg/L | 🟢 None |
| Canada National Avg | 140 mg/L | 🟠 Moderate |
| Vancouver Top Rated | 3 mg/L | 🟢 None |
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What Makes Owen Sound's Water Unique?
Local geology and source profile
The City of Owen Sound operates the Owen Sound Drinking Water System, serving Owen Sound in Grey County, Ontario, Canada. The system draws primarily from surface water sources, including the Sydenham/Pottawatomi River system, with treatment occurring at the city's water treatment plant before distribution to customers across the municipality. The Owen Sound water supply is influenced by Georgian Bay within the Great Lakes Basin, specifically the Sydenham River drainage area. Annual reports detail operational data, confirming compliance with Ontario Drinking Water Quality Standards.
Underlying geology features Paleozoic limestone and dolomite formations from the Ordovician and Silurian periods, such as the Manitoulin Formation and Lockport Dolomite, common in the Niagara Escarpment region. These carbonate rocks contribute to a mineralised character in surface waters through dissolution. However, dilution from lake-influenced runoff moderates the supply to a softer profile compared to groundwater-dominated areas in the Niagara Escarpment.
With softer water, scale buildup is minimal, reducing risks to plumbing, water heaters, dishwashers, and washing machines. Appliances tend to experience extended efficiency and lower maintenance needs. Soap and detergent lathering is excellent, minimizing residue on fixtures and laundry. A water softener is not recommended, as it could unnecessarily strip beneficial minerals without addressing hardness issues. No specific PFAS, lead, or copper exceedances were reported, and pH and other metrics align with Health Canada guidelines.
Geology & Source: Grey County dolostone terrain; Niagara Escarpment limestone and dolomite produce very hard water
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