California’s Central Valley grows a large portion of America’s food – and that requires a huge amount of water. But the region is experiencing a drought and drying up the surface water that farms rely on. So farms are now pumping water from underground. There’s a problem, though: it’s drying up the wells in vulnerable communities that have long relied on underground water.

This video was made possible by a grant from the Open Society Foundations. Nexus Media News is an editorially independent, nonprofit news service covering climate change. Follow us @NexusMediaNews.