Elisabeth Caren/Invision for InStyle Magazine AP Images
Sharon Clott Kanter
Mar 22, 2013 @ 11:00 am

Did you enjoy a tall glass of H20 today? Consider yourself lucky. Currently, 780 million people are without access to safe water, water.org reports, which is why we're throwing our support behind World Water Day today, an annual international event that raises awareness and advocates for freshwater globally and sustainable water resources. And we're not the only ones—Matt Damon founded the non-profit water.org to get the message out, and you can help, too. Visit water.org/help to find out how you can get involved, make a donation at donate.water.org, and post a picture on Instagram and hashtag it #waterday. There's also a super-handy water bottle (perfect for spring and summer trips!) that Damon's BFF Ben Affleck adores—pick one up yourself for $25 at water.org/gift; proceeds go directly to supporting water.org's initiatives.

Plus, see more causes celebs support.

MORE:Target Supports FEED USA With CollabBen Affleck After His Oscar WinSupporting the Stuart House With Afflecks

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