The concept behind this (other than giving life to a cement compound) is to remember our source. God is our source, and our center. He has given us living water. God is the neverending source of living water and He is always supplying our need to keep going. A river always pushes forth even if boulders are in its way, it moves it or works its way around it. Life has many boulders, but with Christ we can always push forward and perservere. The children in Haiti have experienced more boulders than we can ever imagine. And i pray they can see this as a constant reminder that God is always with them.
"If anyone is thirsty, let him come to me and drink. Whoever believes in me, as the Scripture has said, streams of living water will flow from within him'"