Researchers looked at nine public elementary, middle and high schools that received the water dispensers and a control group of students at 10 schools that didn't get them. The students' water consumption was checked before the water dispensers were installed, and 3.5 months and 10 months after their installation.
After the water dispensers were installed, students drank three times more water at lunchtime compared to students in the control group.
Eighty percent of students noticed the water dispensers when they were installed. Two-thirds of those who noticed them used them, and half of those who noticed them drank more water at lunchtime, according to the researchers.