There are three individuals in the image. The person on the left is wearing a white shirt and dark pants, standing near a large water treatment facility with several rectangular tanks. The person in the middle is dressed in a blue shirt and dark pants, standing near a different section of the facility. The person on the right is wearing a red shirt and dark pants, standing near yet another section of the facility. All three appear to be engaged in some form of work related to the water treatment process.