Penetanguishene Water Hardness & Quality Report (2026)
Water Hardness
Source
lake
pH Level
8
neutral = 7.0
Lead
0.004 mg/L
✓ Below action level
TDS
495.6 mg/L
Est. Daily Cost
$0.52
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 Penetanguishene, your appliances are currently losing 26% efficiency due to mineral buildup.
| Appliance | In Penetanguishene | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 3.1 yrs | 8.5 yrs | -64% |
| Washing Machine | 6.4 yrs | 12 yrs | -47% |
| Water Heater | 7.8 yrs | 15 yrs | -48% |
Regional Water Comparison
How Penetanguishene compares to its nearest neighbours
| City | Hardness | Mineralization | Risk |
|---|---|---|---|
| ▶ Penetanguishene, Ontario | 195.5 mg/L | Very High | 🔴 Very Hard |
| Midland, Ontario | 238 mg/L | Very High | 🔴 Very Hard |
| Wasaga Beach, Ontario | 239.5 mg/L | Very High | 🔴 Very Hard |
| Collingwood, Ontario | 233 mg/L | Very High | 🔴 Very Hard |
| Barrie, Ontario | 90 mg/L | Medium | 🟡 Moderately Hard |
National Benchmark
How Penetanguishene compares to the Canada average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Penetanguishene | 195.5 mg/L | 🔴 High |
| Canada National Avg | 141 mg/L | 🟠 Moderate |
| Vancouver Top Rated | 3 mg/L | 🟢 None |
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What Makes Penetanguishene's Water Unique?
Local geology and source profile
Penetanguishene's drinking water is managed by the Town of Penetanguishene, drawing from Georgian Bay — Penetanguishene is a bilingual (French-English) town on Penetanguishene Bay in Georgian Bay, Simcoe County, one of Ontario's oldest and most historically significant communities (the site of the former British naval base Penetanguishene and the 'Discovery Harbour' heritage reconstruction of the 19th-century British naval and military establishment, adjacent to the historic Fort Sainte-Marie Among the Hurons near Midland), the 'Gateway to the Thirty Thousand Islands' of Georgian Bay, and one of Ontario's premier boating and marine heritage destinations on the southern Georgian Bay coastline. Water undergoes coagulation, sedimentation, filtration, UV disinfection, and chloramination, fully meeting the Guidelines for Canadian Drinking Water Quality (GCDWQ). Hardness measures 195.5 mg/L (11.4 gpg) — classified as very hard by Health Canada, consistent with Georgian Bay's carbonate-rich supply.
Penetanguishene draws from Georgian Bay — the bay sits on the transition between the Precambrian Canadian Shield of the Georgian Bay Highlands and the Silurian Niagara Dolomite and Ordovician Trenton and Black River Group limestone of the Simcoe Lowlands. Georgian Bay water at 195.5 mg/L is harder than Lake Ontario (229-240 mg/L) at Penetanguishene, reflecting the specific Georgian Bay sub-basin carbonate input from the Simcoe-Collingwood limestone plateau. The high TDS (495.6 mg/L) is consistent with the Georgian Bay north shore supply character.
At 195.5 mg/L, Penetanguishene homeowners face persistent scale challenges — monthly to bimonthly kettle and showerhead descaling is typical. Hot water tanks benefit from periodic inspection. The Town of Penetanguishene provides water quality information through the municipal office. Health Canada lead precautionary guidance applies to pre-1975 properties in the historic Penetanguishene townsite near the Discovery Harbour heritage waterfront and the established French-English bilingual heritage residential district.
Geology & Source: Supplied by the Town of Penetanguishene from Georgian Bay — the Penetanguishene supply from Georgian Bay produces very hard water at 195.5 mg/L (11.4 gpg), consistent with Georgian Bay's carbonate-rich Ordovician and Silurian limestone supply.