 Thus, many houses have a small water tank known as a "tinaco" on their roofs.Water that accumulates in a basement cistern, known as an "ajibe", is pumped up to it to provide pressure through gravity to the rest of the house regardless of pressure in the local system.In some newer homes, however, key appliances have their own pressure systems,

In 2006, 63% of the Mexican water was extracted from surface water, such as rivers or lakes.