Water hardness in Kapuskasing
97 mg/L moderately hard
Tap water in Kapuskasing is moderately hard: 97 mg/L (5.7 gpg · 5.4 °dH · 9.7 °fH).
Source: Town of Kapuskasing, 2025 Annual Summary Report (2025) · data checked 2026-11-05
Range across supply zones: 44–356 mg/L.
The Town of Kapuskasing runs the municipal drinking water system. Its 2025 annual summary report gives an average of 97.0 mg/L as CaCO₃, which is moderate. Readings span 44.0 to 356.0 mg/L, so some samples were far harder than the average. If your kettle scales quickly, test your own tap rather than relying on the average.
Health Canada: hardness above 200 mg/L is considered poor but tolerable; above 500 mg/L unacceptable.
Water data
| Total hardness | 97 mg/L |
|---|---|
| Utility | Town of Kapuskasing (municipal drinking water system) |
How Kapuskasing compares
- Tap water in Kapuskasing is close to the median of the 254 cities we track in Canada (101 mg/L).
- By hardness it ranks 134 of 254 in Canada (1 = hardest); 47 % of these cities have softer water.
- In Ontario it is number 93 of 120 cities; the regional median is 124 mg/L.
Ranking of the hardest and softest water in Canada →
What it means at home
- Visible kettle scale every few weeks; vinegar or citric acid is enough.
- Water heater and washing machine: some long-term scale; a scale inhibitor slows it.
- Dishwasher: medium salt setting.
- Softener optional; pays off mainly with a gas boiler or tankless heater.
How much salt will you use for softening?
Optional. A scale inhibitor or a small softener protects the heater; soap savings are modest.
Descale a coffee machine or kettle about every 3 months (typical manufacturer guidance for this hardness).
Estimates for planning, not a quote. Check your appliance manual for exact settings.
Dishwasher setting in Kapuskasing
| Brand | Setting for this water |
|---|---|
| Bosch | H00 |
| Miele | 5 °dH |
| AEG / Electrolux | 2 |
| Beko | 2nd |
| Hoover | S1 |
| LG | H1 |
From each brand's manual for the model family named in the source; your model may differ, so check its manual. All brands and how to change the setting →
FAQ
Is Kapuskasing water hard or soft?
It is moderately hard: 97 mg/L as CaCO₃ (5.7 gpg, 5.4 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Kapuskasing safe to drink?
Hardness is not a health issue; it is about limescale, taste and appliances. Mains water must meet national drinking-water standards. Health Canada: hardness above 200 mg/L is considered poor but tolerable; above 500 mg/L unacceptable.
How many grains per gallon is Kapuskasing water?
5.7 gpg, equal to 5.4 °dH, 9.7 °fH or 97 mg/L calcium carbonate.
What dishwasher salt setting should I use in Kapuskasing?
For 97 mg/L (5.4 °dH) check your manufacturer's table: level 2–3.
Do I need a water softener in Kapuskasing?
Not essential; a scale inhibitor protects the heater cheaply.
Source
Source: Town of Kapuskasing, 2025 Annual Summary Report (2025). Method: figure published by the water supplier. Town of Kapuskasing, 2025 Annual Summary Report · Outdated figure? Tell us