2021 Yes https://doi.org/10.3390/ijerph18189652 Bolatova, Zhanerke Asia Observational Exposure Study Students Elementary (K-5) Middle/Jr High (6-8) High School (9-12) Water quality Other Access to water in school Access to sanitation in school Access to hygiene in school Availability of WASH Accessibility of WASH Operation of WASH Maintenance of WASH Sustainability Mixed-methods case study of WASH access in 3 rural Kazakh schools found gaps in drinking water, sanitation, and hygiene infrastructure. Student-reported shortages may undermine health and SDG targets.