The family you are seeing in this photo are from India. I was in one of the states in India, took this photo and heard their story. so here what they told me...
In their village, everyone struggles a lot because of very few sources of water. They have to go far from their house to bring the water to drink. Every day they have to go and bring the water and if they are sick, it is the very tough situation.
In our daily life, we waste water a lot. Without thinking about that someone will be thirsty. Please save water!!