Water is the essential nutrient that is needed for all bodily functions. The human body is composed of 80% water. There is a scientific taught that says that the human body can survive weeks without food but without water for three days it will surely die. The blood that circulates through the body serves as transporter of oxygen to the different parts of the body. It is composed of cells and an aqueous solution (plasma) and our body weight is composed of 8% of the blood.
You must consider if you are putting yourself in danger by assisting them and the information you should provide first is where you are located what you seen happen you should ask them if you should do anything to help ?