Remember this number: $120. It’s the average monthly water bill in America.

Researchers at Michigan State University predict this figure will rise by $49 over the next five years. And if it does, water may become unaffordable for one-third of American households, according to a study, published recently in PLOS ONE, that maps the U.S. areas due to be hit hardest based on local incomes.

http://www.pbs.org/newshour/updates/affordable-water-may-soon-dry-especially-live/