Earth's water resources:

71% of the Earth's surface area is covered with water. However, 97.5% of the water is brackish and only 2.5% is freshwater.

Water from sources such as rivers, lakes, reservoirs, and shallow groundwater is easier to extract and for direct human use, but its quantity is less than 1% of the world's freshwater, accounting for about 0.007% of all water on Earth.

Desalination:

The use of seawater desalination to produce fresh water. It is an open-source incremental technology to realize water resources utilization, which can increase the total amount of freshwater, independent of time and climate, with good quality and gradually reasonable price, and can guarantee stable water supply for coastal residents such as drinking water and industrial water.

Desalination is mainly used to provide drinking water and water for agriculture, and sometimes edible salt is produced as a by-product. Desalination is popular in the Middle East and is also used on some islands and ships, such as in the Persian Gulf.

Home water-saving habits

1. Water-saving toilet

Use water-saving toilets or install water-saving devices.

2. Control the amount of water coming out of the faucet.

In the kitchen or bathroom, add water-saving gaskets or pressure compensation devices. These devices can be mixed with a little air in the flow of water.

3. Close the faucet tightly

Turn off the faucet at hand, and carefully check whether the faucet is closed before each exit and before going to bed, so there is no water leakage.

4. Shorten the shower time

Shorten the time to take a shower every day, it is said that by reducing the shower time by one minute, you can save nine liters of water.

In the body wash, wash hair should also turn off the faucet first.

When taking a shower, the water before waiting for the cold water to turn hot can be filled up in a bucket and used to flush the toilet.

5. Reuse of water for daily use

Save the water used to wash vegetables for watering flowers, washing cars or toilets.

6. Brush your teeth with water in a mouthwash cup

When brushing your teeth, turn off the faucet first and use the mouthwash cup to hold the water.

7. Wash dishes with a water basin

When washing dishes, use the water basin to hold the required amount of water.

8. Wash your face with a basin instead of flowing water

Wash your face with the required amount of water or control the faucet switch to a small amount of water.

9. Wipe instead of rinse

When doing housework, first fill a bucket with the right amount of water, and then follow up with wiping and cleaning.

10. Washing fruits and vegetables in a centralized washing

Put all the fruits and vegetables together in a basin and wash them slowly with a small stream of water.

11. When the washing machine is full and then start washing clothes

When washing clothes, you can wash them by hand, do not use the washing machine.

If you use the washing machine, to be filled with clothes before washing them together, use the water-saving mode to wash, to save water and electricity.

When using the washing machine, do not put the clothes too full, the water level is not set too high, or the lack of friction between the clothes, not clean and waste of water.

12. Water-saving dishwashing method

Use paper towels to wipe away the grease on the dishes, and then wash again with detergent-heated water, and finally use the right amount of warm or cold water to rinse clean. Switching to a water basin filled with water to clean is also a good way.

13. Buy an energy-saving washing machine.