2020 Yes https://doi.org/10.3390/ijerph17010062 Kenney, Erica L. North America Observational Exposure Study Students Staff Elementary (K-5) Middle/Jr High (6-8) Water quality Other Drinking water Infrastructure Water safety Water consumption Mixed-methods study of six U.S. schools found low student water intake regardless of delivery method; bottled coolers posed logistical challenges. Emphasizes need to rebuild trust in tap water.