California is experiencing its worst drought in 500 years, with snowpack levels less than 20% of normal, threatening food production and water supply for over 60 million people expected to live there by 2025. The snowpack typically provides about 1/3 of water for homes and farms as it melts, but with the drought, alternative solutions like the Carlsbad Desalination Project set to provide about 10% of the region's annual water needs starting in late 2015 will be necessary.