Blue Gold focuses on the dangers of 'Virtual Water', referring to the export of products that we make using local water.
Poor countries are forced to use their limited fresh water to grow food as 'cash crops' to be exported to rich countries, instead of using the local fresh water for their survival.
Due to the scale of our global economic trade, watersheds are being depleted through this practice.
Buying locally grown food ensures water stays in each ecosystem. So long as the farmer uses Blue Alternative methods of recharging the groundwater he pumps, local water can be used and reused to grow local crops.