2024 Yes Evaluation of drinking water quality in schools in a District Area in Hanoi, Vietnam https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7513401/ Hung, Dang The Asia Exposure Modeling Elementary (K-5) Water quality Drinking water Tap water Water quality Chemicals Microbes Hanoi Vietnam Water quality tests in 154 Hanoi schools found some microbial contamination (Coliform 9.7%, E.coli 7.8%) and chemical deviations (pH, nitrite, permanganate). Regular monitoring and treatment are needed to ensure safe drinking water for children. 2020