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A cup of coffee is actually from more than 98 % water, so it really matters what water you are using.

Water for brewing coffee requirements are:

• TDS (total dissolved solids) 75-250 ppm, ideally 150 ppm
• calcium hardness 17-85 mg/L, ideally 65 mg/L
• total alkalinity 40 mg/L
• pH 7,0
• sodium 10 mg/L

One piece of Third Wave Water sachet for preparation of 1 gallon (3,78 l) of great water for brewing coffee that meets SCAA water requirements!

Instructions

1. Pour the sachet into 1 gallon (3,78 litres) of water with a minimum of minerals – distilled, demineralized, reverse osmosis, aqua purificata.
2. Mix until everything is dissolved.
3. You can start brewing!

ATTENTION, use only water at the required quality, that you can find in pharmacy, drugstore or grocery store. Technical distilled water is not appropriate and safe for these purposes.