preview

Natural Background Of Water Footprint Essay

Better Essays
The total volume of freshwater consumed and polluted for the production of goods and service used by a consumer is known as the water footprint. Consumption is loss of available water from its catchment area and redeposited at another catchment area, or used to make a product or by evaporation such that it is no longer available for use for another purpose. (Hoekstra et al 2011) According to water footprint studies, three classes of water use exists, namely, blue water which refers to the volume of surface and groundwater consumed in the manufacture of a product, green water which refers to the volume of consumption of rainwater excluding any runoffs and grey water is polluted water and by definition is the amount of freshwater needed to assimilate the load of pollutants given natural background concentrations and existing ambient water quality standards (Hoekstra et al 2011). The understanding of water footprint will eventually lead behavioral changes which will in turn ensure sustainable water use. The Goal and Scope Water footprint, like a standard life cycle assessment, has a goal and a scope around which the study is built. The purpose and scope of analysis which will be used in a water footprint analysis is largely dependent on the area of interest. The definition of this purpose is the goal of the water footprint and the interest can either be 1. The water footprint for a product 2. The water footprint of a consumer 3. The water footprint for a business 4. The water
Get Access