5 gigaliters a year.
So one healthy cow generates two thousand swimming pools' worth of milk a year?!?!?!?A standard Olympic-sized swimming pool measuring 50m long and 25m wide, 2.5 million litres of water.
One gigalitre equals 1,000,000,000 litres or 400 swimming pools.
I'm guessing that should be 5 kiloliters/year?According to the National Agricultural Statistics Service, the average milk production per cow in the United States in 2006 was 2,320 gallons (8,780 liters or 8.7 kiloliters) per cow per year.