Guarani Aquifer

However, at closer inspection, if the world population were to stay at an equilibrium of about 6.96 billion, not even taking into account that babies need less water than grown adults, this figure reaches 1600 years, allowing about 9 liters per day per person.

Due to an expected shortage of fresh water on a global scale, which environmentalists suggest will become critical in under 20 years,[citation needed] this important natural resource is rapidly becoming politicised, and its control becomes ever more controversial.

[3] In general, the aquifer comprises a variety of quartz sand, well-rounded format, and has low clay content.

[citation needed] Research and monitoring of the aquifer in order to better manage it as a resource is considered important, as the population growth rate within its area is relatively high — resulting in higher consumption and pollution risks.

[4] Vegetal interception is another factor that directly influences the quantity of water that infiltrates into the soil, according to Soares and Almeida (2001) who realized a study in the Eucalyptus area between October 1995 and September 1996.