How many liters of water fill an Olympic-size swimming pool built at the minimum legal depth of 2 meters?

Answer

2,500,000 liters

That's 2.5 million liters — enough drinking water to supply one person for over 3,400 years. 'Olympic pool' is such a vivid unit that scientists and journalists routinely use it to describe everything from oil spills to melting glaciers.

Source: World Aquatics (50 m × 25 m × 2 m minimum depth specification)