California is facing increasing water scarcity due to droughts exacerbated by climate change and a growing population. Desalination of seawater and brackish water, combined with current water sources, could help mitigate the effects while being more environmentally safe and secure compared to existing water projects. The largest desalination plant in the Western Hemisphere is under construction in Carlsbad, California and will provide 50 million gallons per day when complete. Israel overcame drought issues through heavy investment in desalination and water recycling after a seven-year drought. Diversifying California's water supply through desalination and other technologies is necessary to ensure a reliable supply for the future in a sustainable way.