A water footprint is the amount of freshwater used by individuals, groups or companies in order to make goods or provide services used by the community. These goods and services may be needed around the entire world. A water footprint can be determined by math for any well-established group of users, or producers. It is measured by dividing the total amount of water used, by the water that became polluted, in the same area during the same amount of time. While the water footprint of an organization is a good indicator for its water consumption and pollution, it does not show how other water sources are affected. More studies will need to be done in order to determine the effect of the water footprint on water sources.