What percentage of the global content of water is constituted by fresh water?

Freshwater constitutes approximately 2.6% to 3% of the total global water supply. This small percentage highlights the scarcity of fresh water compared to the vast amounts of saltwater in the oceans, which make up about 97% of Earth's water. Understanding this percentage is crucial for environmental health specialists, as it underscores the importance of water conservation and management efforts to ensure sustainable access to fresh water for human consumption, agriculture, and ecosystem health. The limited availability of fresh water emphasizes the need for effective policies and practices in water resource management.