Water stress

Water stress is a major growing concern of the whole world we have a rising sea water level and a shortage of freshwater and right now the world is not built to conquer these problems. Water stress will be a problem for the world, humans, animals and also companies will experience massive problems because of water stress. Instead of wars about religion or raw materials, wars will be about fresh water. At the moment the countries with the most water stress are the countries closest to the equator.

Billions of people are going to have less access to clean and fresh water due to climate change and population growth. The access of countries to clean and fresh water depends a lot on the location of the country.

Definition of water stress

Water stress happens when there is a scarcity because of a bigger demand for clean, fresh water usable water than a given area cab supply. More than 70% of the world's usable water is used for agriculture. The rest is used for industrial (19%) and domestic (11%) use. The supply of fresh and usable water comes from rivers, lakes, reservoirs and groundwater.

Scientists have different ways of defining water stress and also measuring water stress. Scientists include seasonal changes, water quality and accessibility. Measuring the amount of freshwater, especially groundwater is very imprecise.

What is the cause of water scarcity?

There are two categories that water scarcity can be divided in physical scarcity and economical scarcity:

• Physical scarcity: Physical scarcity is a shortage of water caused by local ecological conditions
• Economic scarcity: Economic scarcity happens when there is a shortage of water due to a lack of water infrastructure to transport the water.

Many times these two types of water scarcity come together and cause water stress. A good example of both the scarcities together is an area with barely any rainfalls as well as no capacity to store the water or to sanitize the water and resulting in water stress. Most of the time humans are the main cause of water scarcity and water stress. Almost always physical scarcity is not the main cause of water stress. It is caused by political and financial wherewithal scarcity to put into water infrastructure to provide all people with clean water. Even though some countries have a good infrastructure, however, the rapid population growth causes water stress.

Climate change and water stress

Climate change is also affecting water stress. UN experts predict for every 1 degree celsius increase in the global temperature there will be a 20% drop in renewable water sources. Climate change will increase the number of areas with water stress and heighten the amount of water stress in areas that already have water stress. Due to climate change, many regions are expected to have more extreme and longer droughts and more extreme rainfall as well. Rainfall and droughts will be more irregular and out of balance. Because the drought as well as the rainfall will become more extreme and out of balance, agriculture will become more of a challenge. Due to the rising temperature, water will evaporate more quickly from the soil making farming much more of a challenge. A more erratic climate will bring more floods that can ruin crops easily and overwhelm storage systems. Even though we have the Paris agreement to prevent the global temperature to go increase higher than 1,5 degrees Celsius, the most devastating climate change effect will not be prevented.

Water stress and human health

Clean water is essential for humans for multiple reasons. Having water scarcity will result in worse human health because of the spreading of bacteria as well as less food resulting in acute or chronic hunger all over the world. Because of global warming, there will be more and more extreme heatwaves however, there will be not enough water to cool off and some places will be unlivable for humans because of the water scarcity and the heat waves or global warming. Children are more prone to get conditions stemming due to malnutrition because of food scarcity as a result of water scarcity such as stunting, wasting and other chronic illnesses due to poor diet such as diabetes. Water scarcity also forms a risk for work and education because of the time it costs to walk to a source fresh water.