How is Carbon Footprint different from Water Footprint?

Carbon Footprint (CF) measures the total amount of greenhouse gases (GHG) released into the atmosphere each year due to human activities. It is measured in terms of grams/kgs/tons of CO2 equivalent per unit time. For Carbon Footprint assessment types of GHGs (greenhouse gases) accounted for includes CO2, CH4, N2O etc.

Water Footprint (WF) is the measure of total amount of fresh water consumed or polluted either directly or indirectly by a consumer or producer. It is measured in terms of liters of water per unit time. For Water Footprint assessment blue, green and grey water is considered.

Entities for which the CF and WF is calculated are companies, individual consumers, industry sectors, products etc.