SCA Water Calculator / Cupping Journal

Enter the mineral content from your water bottle label to check if it's suitable for coffee brewing

Calcium (Ca²⁺) mg/L

Magnesium (Mg²⁺) mg/L

Bicarbonate (HCOₛ⁻) mg/L

pH Level

How to get these values?

You can find these values on the back of the water bottle.

Hardness: Hardness is a measure of the hardness of water, which is the concentration of minerals in the water. It is expressed in milligrams per liter (mg/L) or parts per million (ppm).
Alkalinity: Alkalinity is a measure of the acidity of water. It is expressed in parts per million (ppm).
pH: pH is a measure of the acidity or alkalinity of water. It is expressed in units of acidity or alkalinity.