Explain the relationship between overpopulation and diminishing water supplies

Edgen example ;

As human populations grow they consume more water, not just by drinking, but through all of the other human activities that require freshwater such as agriculture, bathing, cleaning, etc. Overpopulation, therefore, can lead to overconsumption as populations use more water than an area can support and replenish sustainably.

answer; bodies of water store heat during the day and release it at