§ 01 — Edition 01 · now

which water.
makes the coffee.

Mineral content drives acidity, body and extraction. We tell you which supermarket water works best for the coffee maker in your vacation rental.

Start the toolHow it works
Countries
5
Waters
389
Methods
4
Sources
SCA · Hoffmann
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test protocolreference values · sca

thtotal hardnesstarget zone 50–175 ppm

128 ppm

6219 ppm

alkalkalinitytarget zone 40–75 ppm

52 ppm

2887 ppm

ppm as caco₃ equivalent · example values for filter/pour-over · source: sca water standard

§ 02 — Tool

let's find your water.

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field 01 · country
Where are you?
§ 03 — What Coffeewater does

four things. nothing more.

  • 01

    sca-grade scoring.

    Total hardness 50 to 175 ppm. Alkalinity 40 to 75 ppm. Weighted per brewing method.

  • 02

    389 waters. eu-wide.

    Germany, Austria, Italy, Spain, France. Including discounter house brands.

  • 03

    snap the label.

    Brand not listed? Photo the label. Vision LLM extracts mineral values. Scored in seconds.

  • 04

    per brewing method.

    Filter, espresso, AeroPress, cold brew. Each gets its own target profile.

§ 04 — Manifesto

coffee is 98 percent water. the other percent gets all your attention. we take care of the rest.

James Hoffmann. SCA Standard 310. Hendon and Colonna-Dashwood. The water chemistry behind good coffee has been studied for years. We pack it into one input: country. brewing method. result.

Start the tool →