Water is essential substance for body health. Body fluid imbalance leads to dehydration, which detrimental to fitness level and cognitive performance, and related to psycological disorder and various other chronic diseases. Dehydration insidence of adolescents is higher than adult, 48.1% and 44.5%, respectively. Study on multi-strategic interventions to improve drinking water consumption and dehydration in adolescents related to their cognitive performance is needed. To measure the effect of education and drinking water provision on drinking water consumption, hydration status, and cognitive performance of adolescents. The present research conducted as quasi-experimental with pretest-posttest group design applied to 3 treatment groups and 1 control group. The difference of drinking water consumption in treated K1 with K4 control groups at post-intervention was significant (p< 0.05), but not significant during follow-up period. Significant difference of hydration status based of urine color during post-intervention between K1 with K3 and K4 groups was also found (p< 0.05). The correlation between drinking water consumption with hydration status in this research was not significant. Hydration status was also not significantly correlated to cognitive performance of adolescent, particulary in consentration level and short-period memory. Education accompanied with drinking water provision was multi-strategic intervention which was able to improve drinking water consumption of adolescents better than other interventions. Drinking water consumption increase showed no significant effect on hydration status and cognitive performance of adolescent.