Visualize Water Problems around the World (2)

Population not using safely managed drinking-water services and renewable water resources per capita

Water stress index and total water withdrawal

Renewable water resources per capita and GNI per capita

Total water using per capita and renewable water resources per capita

Population not using safely managed drinking-water services and illiteracy rate (both sexes)

Renewable water resources per capita and water stress index

This map shows the population of people who are not using safely water resources and renewable water resources per capita. Both items are used within choropleth map.

Peru is in the north- western part of South America Continent. Republic of Congo lies right on the equator in Africa Continent. The renewable water resources per capita in these countries e xceed 50,000 ㎥. However, the population of people who are not using safely managed drinking-water services is above 40% in Peru and 60% in Republic of Congo. In Japan, the renewable water resources per capita is below 5,000 ㎥, while the population of people who are not using safely managed drinking-water services is below 5%.

These findings indicate that for some countries even though there is high renewable water resources per capita, the population of people who are not using safely managed drinking-water services can be high. It is difficult to say that there is a correlation between these two numbers. There is also missing data on the population not using safely managed drinking-water services especially in countries in Africa. It is predicted that there are more countries than we know which actually have a high population not using safely managed drinking-water services.

This map shows water stress index and total water withdrawal. Water stress is used within choropleth map and total water withdrawal is used within symbol map.

The higher water stress of a country, the less is has water resources to spare. Countries in West Asia, even though those countries’ total water withdrawal is low, water stress index exceeds 100. There are also some countries of them that water stress index exceed 500. Besides countries withdrawing a lot of water such as India, China, the United States of America, Europe countries and so on are occurring water stress even though there are a lot of precipitation.

These findings indicate that for some countries even though total water withdrawal is low, water stress index tends to be high. On the other hand, countries withdrawing a lot of water tend to be water shortage.

This map shows renewable water resources per capita and GNI per capita. Renewable water resources per capita is used within choropleth map and GNI per capita is used within symbol map.

We Compared “Population not using safely managed drinking-water services and renewable water resources per capita (Map 1)” and this map. The results indicate that some countries in Africa even though renewable water resources per capita exceed 10,000 ㎥, the population of people who are not using safely managed drinking-water services is large. GNI per capita in those countries is also low.

These findings indicate that for people in economic powers even though renewable water resources per capita is low, they can use safely managed drinking-water services.

This map shows total water using per capita, sum of municipal, agricultural and industrial water, and renewable water resources per capita. Both of items are used within choropleth map.

People in developed countries such as United States of America and Canada use a lot of water. On the other hand, countries in Central Africa, renewable water resources is nearly 10,000 ㎥ or more. However, total water using per capita is below 100 ㎥.

These findings indicate that for some countries even though there is high renewable water resources per capita, total water using per capita is small. It is also indicated that total water using per capita tends to increase with improvement of living or development of agriculture and industry.

This maps shows population of people who are not using safely managed drinking-water services and illiteracy rate. Both of items are used within choropleth map.

Countries in Africa and South Asia, population not using safely managed drinking-water services is large. In those countries illiteracy rate is also high. As background of this problem, it can be considered that children cannot go to school. For example, people who cannot get safely managed drinking-water services must take many hours to draw and carry water.This is mainly the job for children, so they do not have time to go to school.

This map shows renewable water resources per capita and water stress index. Renewable water resources per capita is used within choropleth map and water stress index is used within symbol map.

In Saudi Arabia and around that countries, there is little precipitation throughout the year and renewable water resources per capita is small. Moreover water scarcity is occurring there. On the other hand, Canada, Norway, Republic of Congo and Gabon in Central Africa, with large amount of renewable water resources, have high water stress.

These findings indicate that there is a strong correlation between renewable water resources per capita and water stress index.