A small group of farms in California use more water than entire cities, and it's mostly going to a single crop, according to a new report

• An investigation from ProPublica and The Desert Sun focused on farmers' water use in California.
• They found that 20 farming families used a majority share of one region's water.
• Those families used the water mainly to grow hay to feed livestock, the investigation found.

The Southwest United States is slowly losing access to its foremost source of water — the Colorado River, which provides over 40 million people across seven states access to water for drinking, irrigation, hydropower, and more.