Isabelle, 12, and Katherine Adams, 9, are the founders of Paper For Water. (Photo by Danny Fulgencio)

Isabelle, 12, and Katherine Adams, 9, are the founders of Paper For Water. (Photo by Danny Fulgencio)

Two Preston Hollow students who, despite their young ages, are longtime philanthropists will be honored for their work this Friday on “The HALO Effect” on Nickelodeon.

Isabelle and Katherine Adams, who haven’t yet hit high school, founded their own nonprofit, Paper For Water, while still students at Providence Christian School of Texas. As featured in our December edition, the girls fold intricate origami designs that are sold at local boutiques and online. Proceeds from the sales are used to build wells in places that don’t have easy access to clean water. So far, the girls have raised more than $800,000 to build around 100 wells in countries from Peru to India.

“The HALO Effect” spotlights teenagers who have gone above and beyond for their community or the world at large. The Adams sisters will be featured in the episode running Friday, June 17, at 8:30 p.m. on Nickelodeon. If you miss that, it’ll be repeated on Monday, June 20, at 8 p.m. on NickToons and on Saturday, June 25, at 9:30 p.m. on TeenNick.