
Baja California Sur (BCS) is the driest state in Mexico and dependent on rainfall. Locally, it is said that the water does not come from the faucet, it comes from the mountain. Eighty percent of BCS rainwater evaporates, five percent is, run off, to the arroyos and only the remaining fifteen percent seeps into the ground to infiltrate and recharge its aquifers. Forty seven percent of Mexicans do not have consistent access to drinking water even though access to water for personnel and domestic use is a right guaranteed in Article 4 of the Mexican constitution.