via Wire Image

Talk about taking service seriously – Jessica Biel is prepping to climb a mountain for her cause. And this isn’t just any hill: alongside Isabel Lucas, of Transformers 2 fame, and hip-hop star Lupe Fiasco, Jessica will take on the highest freestanding mountain in the world, Tanzania’s Mount Kilimanjaro.

Organized by a group called Summit on the Summit, the climb will raise awareness and funds for the global crisis of access to clean water, which is especially bad in Africa. Jessica’s often spotted working out with her super fit boyfriend Justin Timberlake, but she’ll still be in for a challenge – the climb will take the stars 19,340 feet above sea level. But you don’t have to climb a mountain to make a difference: brush up on your water facts and check out Summit on the Summit to find out how you can help.