Large, open wells like this one can be dangerous for children.

People would overwhelm MSF mobile clinics, such as this one at an Arab village.

For a while, Barry Gutwein lived in this hut in Um Dukhum.

His first “home” in Um Dukhum was little more than a lean-to with a mat roof.

A look inside the hospital ward MSF operated in Um Dukhum.

The hospital ward at Um Dukhum from the outside.

From the top of the water tower, this view shows people gathered at the nearby water filling station.

Everyone was happy when Gutwein and his helpers built this water storage tank.

After digging a well several meters deep, the workers reinforced the inside with bricks.

As an emergency water and sanitation engineer, much of Gutwein’s time was spent building and repairing wells.

A local sheik and his family in Bindisi surround Gutwein.

This is the family of Gutwein’s assistant, El Sadia.