Less than half a litre for 5 seconds, according to our calculation: about 0.1 litre to cool the servers and nearly 0.4 litre once the water used to produce the electricity is counted. No study measures water per video directly. The 4-litre figure in circulation covers 10 seconds and assumes 3 times more energy than our extrapolation.
Read the source article: AI video generation environmental impact: energy, CO2e, water