This Super Bowl Sunday, Colgate is asking a poignant and relatable question: Do you leave the water running when you brush your teeth? 

If you do, up to 4 gallons of water are being wasted. That gushing water is more than many people get in a week. Around the world, 783 million people do not have regular access to clean water. An additional 2.3 billion do not have access to proper sanitation. 

A lot of people take clean water and functioning toilets for granted, but for too many people, they're constant sources of stress and hardship.

Colgate's "Every drop counts" Super Bowl ad is a vivid reminder of the disparities in the world. Amid all the revelry of the Super Bowl, it acts as a simple call to action.

By leaving the tap running, you're not directly depriving someone else of water. But you are betraying a complacency that other people can't afford. 

Individual water consumption is negligible compared to what industries such as agriculture use. But by staying aware of how clean water impacts and perpetuates poverty around the world you'll better appreciate how lucky you are to never have to worry about it.

And then you can take action by calling on world leaders to end an injustice: people lacking access to water and sanitation.