Edmonton
Edmonton, Canada has an estimated water hardness of 165 ppm (mg/L as calcium carbonate), which is classed as hard. Scale prevention and regular descaling are worthwhile.
Edmonton water hardness in every unit
| Unit | Reference estimate |
|---|---|
| mg/L or ppm (CaCO₃) | 165 |
| mmol/L | 1.65 |
| German degrees (°dH) | 9.24 |
| French degrees (°fH) | 16.5 |
| Clark degrees (°e) | 11.58 |
| Grains per US gallon (gpg) | 9.64 |
How the Edmonton figure was derived
- Period covered: Not stated by the source
- Calculation: The source publishes a single typical figure and no range.
Where Edmonton's water comes from
- Supplier: EPCOR
- Source: The North Saskatchewan River
- Official website: EPCOR
EPCOR describes the river water as moderately hard, about 165 mg/L on average, because the river picks up minerals as it flows over limestone. EPCOR: Edmonton daily water quality (checked 2026-10-31).
How Edmonton compares
With a reference estimate of 165 ppm, Edmonton ranks 21st hardest of the 69 cities in our directory, 91 ppm above the directory median of 74 ppm. Among the cities in our directory in North America, San Antonio is the hardest at 299 ppm and Portland is the softest at 9 ppm.
What hard water means at home
Hard water builds scale noticeably in kettles, coffee machines and shower heads, and can leave spots on glassware and a film on surfaces. Regular descaling, a dishwasher softener or salt, and the hard-water detergent dose all help.
Using a 165 ppm reading with your appliances
- Dishwasher: salt check manual; match the converted reading to your model. Use salt only as specified for the built-in softener.
- Coffee machine: descale when the manual or machine indicates; filter: use only a compatible filter specified by the manufacturer.
- Laundry: use the hard-water dose. Do not exceed the label maximum.
- Kettle: Inspect for scale; follow the manual.
- Humidifier: For ultrasonic or impeller units, use low-mineral water such as distilled water. Empty and dry portable tanks daily; clean every third day. Follow manufacturer instructions.
Official manufacturer guidance
Use these references with your exact appliance model. They explain settings and maintenance, not the local water measurement. Source languages and model limits are shown; these are not affiliate links.
- Bosch Canada — Coffee-machine hardness testing and cleaning (en-CA)
Hardness test-strip guidance, water-filter care and washable components for the countertop coffee machines described on the page. Not dishwasher settings.
(checked 2026-10-20).
Hardness alone does not determine maintenance frequency. How to match your reading to an appliance manual. Dishwasher settings by brand: find your setting. Thinking about a softener? Pros and cons and sizing. Kettles and coffee machines: descaling guide. Portable humidifier care: US EPA guidance.
Frequently asked questions
Do I need dishwasher salt in Edmonton?
Check manual. Use salt only as specified for the built-in softener. Always follow your dishwasher manual.
How often should I descale a coffee machine in Edmonton?
Descale when the manual or machine indicates. Hardness alone does not determine an interval: usage and appliance design also matter. Water filter: use only a compatible filter specified by the manufacturer.
Do I need a water softener in Edmonton?
Possibly. Many households manage with appliance-level measures, while a softener can reduce scale throughout the home. Compare costs and maintenance first.
Is hard water in Edmonton safe to drink?
Water hardness is mainly an aesthetic and scale issue. The World Health Organization does not set a health-based guideline value for it. Hardness affects taste, scale and detergent use rather than drinking safety, and your utility is responsible for meeting drinking-water standards. If you have a specific health or dietary concern, ask your doctor.
How to check your own water
City averages are a starting point. To get your actual figure, check the linked source (EPCOR: Edmonton daily water quality) and obtain a current report for your address from your water supplier, or dip a hardness test strip in a glass of cold tap water and read it against the chart. Strips usually report in °dH, gpg or ppm; enter the number into the Waterdial checker to convert it and see the matching appliance settings. Use a recent, correctly performed hardness test when a city estimate is too broad.
Source
EPCOR: Edmonton daily water quality, checked 2026-10-31. Guidance is general; your appliance manual takes priority.
Learn more about water hardness on Wikipedia
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