Astudy was made to find out if those who drank tea consumed more water than those who did not. the study concluded that those who drank tea consumed 0.024 liters less than those who did not. are the results practically significant?

I would say that the results of the study are not significant. This is because the difference of those who drink tea and did not drink tea is small and more or less will have the same values at some points of the research. Having a difference of  0.024, cannot really say anything or differentiate the two.