Drinkable global water distribution: Water is a crucial component for sustaining life, yet not all water is suitable for human consumption. Freshwater, commonly referred to as drinkable water, is free from hazardous impurities like bacteria, viruses, parasites, chemicals, and salts. Drinkable water serves multiple purposes such as drinking, cooking, and domestic tasks. Now, have you ever thought about how much drinkable water is available worldwide? Moreover, how is this precious resource distributed and accessed by various countries and regions?
Let’s take a moment to take a sip of water and delve into some intriguing numerical data on global drinkable water distribution. In this blog, we’ll uncover fascinating insights that shed light on the quantity and accessibility of drinkable water on a global scale.
Drinkable Global Water
How Much Drinkable Water Is There in the World?
Did you know that our Earth is covered with a staggering 1.4 billion cubic kilometers (km3) of water? That’s a mind-boggling 1.4 sextillion liters (L) or 370 quintillion gallons (gal)! But here’s the catch – the majority of this water is actually saltwater, filling up our vast oceans and seas.
Only about 2.5% of all water on Earth is freshwater that can potentially be drinkable
Notwithstanding, not all freshwater is conveniently accessible or obtainable for human usage. The majority of this water is stored in glaciers and icecaps that cover approximately 10% of the Earth’s land surface. The primary sources of potable global water distribution for human use are groundwater and surface water bodies.
Groundwater refers to water that occupies the spaces between rocks and soil underground. It can be extracted through wells, boreholes, or springs. Groundwater supplies between 25 and 40% of the world’s potable water.
Surface water bodies encompass rivers, streams, lakes, and reservoirs that collect rainwater or meltwater from glaciers and icecaps. Surface water bodies provide about 60 to 80% of the world’s potable water.
According to the World Health Organization (WHO), the total volume of renewable freshwater resources in the world is approximately 43,750 km3 per year. This implies that this quantity of freshwater can be replenished by precipitation or inflow from other sources annually. However, this quantity does not consider environmental flow requirements, which are the minimum amount of water needed to sustain ecosystems and biodiversity.
Every year, people extract approximately 3,982 km3 of freshwater from either underground or aboveground sources for various purposes. To put this into perspective, it is equivalent to drawing water from thousands of gigantic wells, each shaped like a 1km cube, hidden beneath the Earth’s surface. It is important to note that this measurement solely represents the freshwater withdrawal and does not encompass losses caused by evaporation, leakage, or pollution.
Annual freshwater withdrawals, total (billion cubic meters) | Data (worldbank.org)
Each year, humans use approximately 2,055 km3 of freshwater globally. Unfortunately, this water is not replenished to its original source or another source after use. Keep in mind, this figure does not include recycled or reused water.
How Is Access to Drinkable Water Managed and Implemented Globally?
The amount of drinkable global water distribution available in different countries and regions varies widely depending on their climate, geography, population, and development. Some countries have abundant freshwater resources, while others face water scarcity or stress.
The global average of renewable freshwater resources per capita is about 5,829 cubic meters (m3) per year. However, this average mask the huge disparities between countries and regions. For example, the renewable freshwater resources per capita in Canada are about 82,414 m3 per year, while in Kuwait they are only 10 m3 per year.
Water scarcity is defined as the situation when the annual availability of renewable freshwater resources per capita is less than 1,000 m3. Its stress is defined as the situation when the annual availability of renewable freshwater resources per capita is between 1,000 and 1,700 m3. Water scarcity and stress can affect the health, livelihoods, and security of people and countries.
Over 2 billion people live in water-stressed countries, which is expected to be exacerbated in some regions as a result of climate change and population growth. Some of the regions that face the most severe water scarcity and stress are the Middle East and North Africa, Sub-Saharan Africa, Central and South Asia, and parts of Latin America.
Accessible water source
According to the WHO and UNICEF Joint Monitoring Programme (JMP), access to drinkable global water distribution is measured by the level of service provided by different types of water sources. The highest level of service is safely managed drinking water service, which means drinking water from an improved water source that is located on premises, available when needed, and free from fecal and priority chemical contamination. The lowest level of service is surface water, which means drinking untreated water directly from lakes, ponds, rivers, and streams.
In 2022, 73% of the global population (6 billion) people used safely managed drinking-water services. However, this means that 2 billion people still lacked access to safely managed drinking water services in 2022. Of those, 1.2 billion people had basic services (improved water source within a round trip of 30 minutes), 282 million people had limited services (improved water source requiring more than 30 minutes to collect water), 368 million people used unprotected wells and springs, and 122 million people used surface water.
The JMP’s findings reveal stark disparities in the availability of clean water globally, characterized by geographical, socioeconomic, and financial gaps. These inequalities extend beyond the traditional rural-urban divide and are prevalent within towns and cities as well. Those residing in low-income or informal settlements, as well as those in unlawful settlements, are often left with limited access to improved sources of potable water compared to their counterparts.
Further, individuals in conflict-prone or weakened states also grapple with obstacles when trying to obtain safe and adequate water. While the period between 2015 and 2020 saw 107 million people gaining access to reliable drinking water services, and 115 million gaining access to basic services, this growth proved inadequate to keep up with population growth and urbanization. The outbreak of the COVID-19 pandemic further exacerbated the situation, posing a risk to the consistency and quality of water services.
Drinkable Global Water Distribution
Potable water refers to water that is devoid of harmful impurities and can be consumed by humans. Access to potable water is vital for sustaining life and promoting good health. However, not all water found on Earth is suitable for drinking or readily accessible. Merely 2.5% of the planet’s water constitutes freshwater, with a significant portion being stored in glaciers and icecaps. Groundwater and surface water bodies serve as the primary sources of potable water for human consumption.
The availability of potable water differs greatly among countries and regions due to variations in climate, geography, population, and development. Some nations possess abundant freshwater resources, while others grapple with water scarcity or stress. Inequities in access to potable water exist not only between countries but also within them, with certain individuals benefiting from well-managed drinking water services while others have limited or no access at all. Though progress has been made globally in expanding access to potable water, numerous challenges and gaps remain.
Climate change, population growth, urbanization, pollution, and conflicts are among the factors that jeopardize the availability and quality of potable water worldwide. It is imperative that immediate action and investments be undertaken to ensure that everyone can acquire safe and sufficient water to safeguard their health and well-being.
We trust that you found this blog post enlightening and gained new insights into drinkable global water distribution. Should you have any inquiries or thoughts, please do not hesitate to reach out to us. Don’t forget to also share this post with your loved ones who could benefit from it.
Our sincerest thanks for reading and remember to stay hydrated! 💧