Happy World Water Day (on March 22). This United Nations observance day was established in 1993 to celebrate water and raise awareness of the 2 billion people across the world living without access to safe drinking water. This year’s theme is a focus on groundwater: “Making the invisible visible.”
The world relies almost entirely on groundwater for drinking water supplies, sanitation systems, farming and other uses, according to the UN. The recent Intergovernmental Panel on Climate Change report emphasized concerns about the future of drinking water as warming trends and human development accelerate threats to water supplies.