so we said, let's take microfinance and layer it in here and give people access to affordable loans soter connection. >> reporter: depending on where you are, that could mean a faucet in your own home, or a toilet, with clean, running water. water credit is working. white says loans are being repaid at a rate of 98% in places like haiti. >> that was my first grass runway. >> reporter: what damon and white are trying to eliminate is the need to walk for water, taking time away from work or school. the water's there? >> yeah. all that time that you're wasting, going and standing in the line, you now have to go to your job, it's the difference between hope and looking forward to a better day and an existence that just basically is about, you know, scavenging for water. >> reporter: but how do you get people in the western world, where water is plentiful, to care? >> you know, we've talked about different ways to do that, maybe involving humor. >> hey, there -- >> reporter: take ben stiller. he gets attention for his foundation, stiller strong, by producing hilarious videos. >> matt damon,