Like coffee, tea is 99 percent water, and an off balance of mineral content or a high amount of chlorine can cause an unsatisfying flavour or aroma. The best water for tea infusion is free of contaminants and low in minerals. And since tea is brewed at high temperatures, scale buildup can clog or reduce the life of tea-brewing equipment.

Below you’ll see charts that display our recommended water specifications. Water used to make tea must be potable under local requirements and EPA drinking water standards, and it is recommended to meet the following attribute requirements:

Colour Codes

Total Dissolved Solids (TDS)

Parts per Million (ppm)

Total Hardness (TH)

Grains per Gallon (gpg)


Total Alkalinity (TA)

Parts per Million (ppm)

Free Chlorine (FCl)

Parts per Million (ppm)

Total Chlorine (TCl)

Parts per Million (ppm)

Chlorides (Cl)

Parts per Million (ppm)

Iron (Fe)

Parts per Million (ppm)