How many milliliters of water does a person drink a day?

Under normal circumstances, people's daily water consumption is 1500-2000ml, but for elderly patients with relatively low basal metabolic rate, the water consumption can be reduced by about 500ml, and the water consumption of teenagers and children can also be reduced by about 500ml. Adult women need more drinking water during ovulation, and need to increase the drinking water by more than 500ml. In some common dehydration diseases, such as high-temperature heatstroke or thermal spasm, heat exhaustion, heatstroke, etc., it is necessary to supplement drinking water above 1500ml.