I am very scared that in the near future there won’t be enough water in the world. I read news from France, Belgium and even Australia that these countries have water issues and the water usage is being regulated.
I already know that the drinkable water is not a renewable source.
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Possibly. Globally, freshwater aquifers are receding; As we’re using more water than these aquifers naturally refill. With population growth, this increases the need for crops which use the majority of freshwater. This means in time, if we do not find a solution, we will not have enough freshwater.
Desalination is a promising lead on how to solve the issue, as over 97% of the Earth’s water is salt water. The problem with desalination is that it’s a slow and expensive process. Currently, the most efficient commercially operated desalination plants use 15x more electricity than a freshwater plant.
Hydroponics are another good way to reduce freshwater use. Globally, 70% of all freshwater goes to farming. On average, hydroponic farms use 10x less water than field crops. They also do not require pesticides, weed killers and are impervious to harsh weather, as they’re grown indoors. Given that nutrients are fed directly to the plants and light exposure can be controlled, the plants can be grown in high densities, reducing the surface area needed.
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