Florida gets much of its drinking water from the Floridan Aquifer and the Biscayne Aquifer, as well as from surface water from Lake Okeechobee and other lakes, but population increases have begun to strain available sources. The state has built 120 desalination plants, more than three times as many as any other state, including the largest plant in the United States. Additionally, an electrodialysis reversal plant in Sarasota is the largest of its type in the world, and a nanofiltration plant in Boca Raton is the largest of its type in the western hemisphere.