FAQs about Water Pollution and Shortage
11. What are water stress, periodic scarcity and water scarcity?
Water scarcity is one of the main problems of the 21st century, which is already facing many
countries on the five continents of the world. During the 20th century, water consumption doubled above the population growth rate and, “although it is not possible to speak of water scarcity at a global level, the number of regions with chronic levels of water deficiency is increasing.”
One approach applied to measuring water scarcity has been to classify countries according to the amount of annual water resources available per person, following the Falkenmark Water Stress Index.
Water stress. It occurs “when annual water supplies drop to 1700 cubic meters per person per year.
Periodic scarcity is when water levels drop between 1,700 and 1,000 cubic meters per person per year.
Water scarcity occurs when the water supply falls below 1000 cubic meters per person per year.
FAQs about Pollution and water shortage
Updated and extended in August 2021
Pollution
1. What is the hydrosphere?
2. Why is water important?
3. What is water pollution?
4. What are the main water pollutants?
5. What diseases does water pollution transmit?
6. Which are the countries that best manage their waters?
7. What should be done to keep the waters clean?
8. What are oligotrophization and eutrophication of lakes?
Shortage
9. What is water scarcity?
10. What are the causes of water scarcity?
11. What is water stress, periodic scarcity and water scarcity?
12. Can we finish drinking water on the planet?
13. What are the cities with the greatest water shortage?
14. Could wastewater be used to solve the water shortage?
15. Why is not the water in the seas desalinated?
.
Sources
United Nations. Global Issues. Water. https://www.un.org/en/global-issues/water
United Nations. UN-Water. Water Scarcity. https://www.unwater.org/water-facts/scarcity/
UNESCO. Is wastewater the new black gold? 21/03/2017. https://en.unesco.org/news/wastewater-new-black-gold
UNESCO. Water Scarcity and Quality. https://en.unesco.org/themes/water-security/hydrology/water-scarcity-and-quality
Wikipedia. Water scarcity. https://en.wikipedia.org/wiki/Water_scarcity
Other sections of Pollution and degradation of soils
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