Water hardness in Cochrane
166 mg/L hard
Tap water in Cochrane is hard: 166 mg/L (9.7 gpg · 9.3 °dH · 16.6 °fH).
Source: Town of Cochrane water treatment plant lab report (KaizenLAB), 8 Aug 2024 (2024) · data checked 2026-11-02
The Town of Cochrane's water treatment plant lab report of 8 August 2024 shows calculated hardness of 166.0 mg/L as CaCO3. It is a single sample, though an earlier 2021 sample of 157.4 mg/L is close. The water is hard, and scale on kettles and water heaters is common.
Health Canada: hardness above 200 mg/L is considered poor but tolerable; above 500 mg/L unacceptable.
Water data
| Total hardness | 166 mg/L |
|---|---|
| Utility | Town of Cochrane |
How Cochrane compares
- Tap water in Cochrane is 64 % harder than the median of the 254 cities we track in Canada (101 mg/L).
- By hardness it ranks 59 of 254 in Canada (1 = hardest); 77 % of these cities have softer water.
- In Alberta it is number 13 of 14 cities; the regional median is 197 mg/L.
- Nearest city with clearly harder water: High River, 79 km away (262 mg/L).
Ranking of the hardest and softest water in Canada →
What it means at home
- Fast scale on taps, shower screens and kettle; white spots on glassware.
- Water heater: efficiency loss and element failures within years if unprotected.
- Dry skin and dull hair after showering are common.
- Softener recommended; jug or reverse osmosis for drinking.
How much salt will you use for softening?
Recommended, especially with a heater or boiler: scale cuts efficiency and shortens its life.
Descale a coffee machine or kettle about every 2 months (typical manufacturer guidance for this hardness).
Estimates for planning, not a quote. Check your appliance manual for exact settings.
Dishwasher setting in Cochrane
| Brand | Setting for this water |
|---|---|
| Bosch | H02 |
| Miele | 9 °dH |
| AEG / Electrolux | 2 |
| Beko | 3rd |
| Hoover | S1 |
| LG | H2 |
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 Cochrane water hard or soft?
It is hard: 166 mg/L as CaCO₃ (9.7 gpg, 9.3 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Cochrane 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 Cochrane water?
9.7 gpg, equal to 9.3 °dH, 16.6 °fH or 166 mg/L calcium carbonate.
What dishwasher salt setting should I use in Cochrane?
For 166 mg/L (9.3 °dH) check your manufacturer's table: level 4–5.
Do I need a water softener in Cochrane?
Recommended if you have a water heater, boiler or tankless unit: it saves repairs and detergent.
Source
Source: Town of Cochrane water treatment plant lab report (KaizenLAB), 8 Aug 2024 (2024). Method: figure published by the water supplier. Town of Cochrane water treatment plant lab report (KaizenLAB), 8 Aug 2024 · Outdated figure? Tell us