From the Washington Post:

A recent laboratory test found that water in St. Anthony’s shallow well has twice the concentration of arsenic considered safe.

For many Californians, the state’s long drought has meant small inconveniences such as shorter showers and restrictions on watering lawns. But in two rural valleys, the Coachella southeast of Los Angeles and the San Joaquin to the north, farmworkers and other poor residents are feeling its impact in a far more serious and personal way.