The government invested 1.3 billion pesos (about $105 million) in the expansion of a water plant that will serve about 1.5 million people living on the border of Mexico's Baja California state with the United States, President Felipe Calderon said.

"With this investment of more than 1.3 billion pesos ... we will give drinking water to nearly 1.5 million Baja California residents," Calderon said during the inauguration Tuesday of the Colorado River-Tijuana plant in Mexicali, the capital of Baja California.

The water plant was constructed 30 years ago, but it was unable to meet demand from residents, prompting officials to begin the expansion project four years ago, the president said.

The water plant's area has been expanded by about 64 kilometers (40 miles), or 30 percent, allowing the water flow to increase, Calderon said.

The government plans to provide support for the reconstruction and modernization of irrigation canals in the Mexicali Valley destroyed by an earthquake in 2010, the president said.

The project's goal is to prevent water loss due to the high temperatures in the area, Calderon said.

The public works projects will require the investment of 7.7 billion pesos (about $626 million) to construct irrigation systems that will serve all the farmers in Mexicali and some in neighboring Sonora state, the president said.