It can be easy to forget that millions of people throughout the world live without access to enough clean water. That's why the human rights based water non-profit, DigDeep, has come up with a new challenge: go 24 hours using only 4 liters of water. 

Watch Lamorne Morris, Drake Bell, David Henrie, Gina Rodriguez and Brandon Mychael Smith explain and take the 4Liters Challenge below, then take it yourself or donate to help get clean water to those in need.

 Find out more at 4liters.org.