Increasing human settlement in the vicinities has been resulting in destructive use of this natural resource, and thus the plant communities may be at risk of losing their natural balance. Rural and urban populations as well as tourism activities around the area of Sierra de la Laguna are increasing rapidly. Recent human population derived from census data, indicate approximately 250,000 inhabitants in the region. This population demands more water to satisfy its primary needs; it is obtained totally from underground aquifers by pumping.