How many degrees below zero can 40 liters of water last?

The water consumption of a family is related to the number of family members and the weather temperature. If the population is large and the weather is hot, the water consumption will be large, especially when the weather is hot, you should take more baths and wash them frequently. These two items consume the most water, and 40 liters of water may not even be enough for one day; If the population is small and the weather temperature is low, the water consumption will be less, and 40 liters of water may take four or five days.