Why is there water scarcity in La Guajira?

In La Guajira there is scarcity water, because is a desert an there is few people in the majority are indigenous. On the other hand, Colombians government don't help them without water, without food. nevertheless, many families had been locking for water in wells. Even though they had been trying of save animal's life and children's life, too.

What can we do to save water and protect the environment in Colombia?
Some possibilities to take care of the environment are; protecting animals, recycling, avoiding the cut of trees, decreasing the waste of water, and avoiding the pollution in the streets.