World Water Day

What Is World Water Day?

Every year on March 22nd, the world observes "World Water Day," established by the UN General Assembly in 1993 following a recommendation from the 1992 Earth Summit in Rio de Janeiro, Brazil. The day reaffirms the importance of fresh water and promotes sustainable management of water resources worldwide. Less than 0.01% of the water on Earth exists as readily usable freshwater in rivers and lakes, making the protection of this precious resource a critical global issue.

Scientific Facts About Earth's Water Resources

Water is the core of the circulatory system that sustains life on Earth.

• The water cycle: Seawater evaporated by solar energy forms clouds, falls as rain or snow over land, flows through groundwater and rivers, and eventually returns to the sea. Throughout this cycle, water is naturally purified, helping maintain the balance of ecosystems.
• Water's unique properties: Water is the only common substance that exists naturally as a solid, liquid, and gas at ordinary temperatures and pressures. Its unusually high heat capacity also helps moderate Earth's temperature, acting like a planetary thermostat.

Water Issues and the Global Situation

Access to safe water is a basic human right essential for health and dignity.

• Water stress and inequality: About 2 billion people lack access to safely managed drinking water. Due to population growth and climate change, more than half the world's population is projected to live in water-stressed areas by 2050.
• Virtual water: When we import agricultural or industrial products, we're effectively "importing" the large amounts of water used to produce them. For example, producing 1 kg of beef requires roughly 20,000 times that weight in water -- meaning our consumption habits affect water resources in faraway countries.

Interesting Facts About Water

• The truth about the "Blue Planet": About 70% of Earth's surface is covered in water, but 97.5% of it is seawater -- leaving only a tiny fraction available as freshwater for drinking.
• Water in the human body: The adult human body is roughly 60-70% water. Losing just 2% of your body's water makes you feel thirsty, and losing 20% can be life-threatening -- water is essential at the cellular level.
• Hard and soft water: Water is classified as "hard" or "soft" depending on its calcium and magnesium content. Much of Japan's water is soft, which is well suited to bringing out the delicate flavors of food and tea.
• Searching for water in space: Water is considered key to the existence of life, and whether liquid water exists beneath the surface of Mars or on Jupiter's moon Europa is one of the most important questions in space exploration.
• Water purification technology: Japan's filtration and membrane-separation technologies are among the best in the world, contributing significantly to global water solutions by converting seawater to freshwater and recycling treated wastewater.

Ideas for Observing World Water Day

• Look into where the water from your tap comes from, and reflect on the connection between infrastructure and nature that supports your daily life
• To mark the day, take concrete steps to save water -- turn off the tap while brushing your teeth, or reuse bathwater
• Read the label on the bottled water you usually drink, and appreciate the unique character of the water based on where it comes from
• Learn about "virtual water" and how your diet and shopping habits connect to global water resources, and consider how reducing waste can help solve water issues

A Clear Flow Nourishes Your Life and Future

March 22nd is a day to feel grateful for the gift of water, the source of all life, and to appreciate the value of every single drop. Water is constantly changing form, flowing without pause, nurturing everything it touches. Treating water with care is an act of kindness that protects your own health and helps pass on a rich ecosystem to future generations. Just as clear water flows freely, may your heart stay clear and your days be filled with fresh energy. Wise choices about water help deepen the brilliance of our entire planet.