Are those numbers right? 1580 m3/year is 4.3 m3 or 1100 gallons per day. http://www.theworldcounts.com/stories/average-daily-water-us... says 100 to 175 gallons per day per person.
Note that those numbers when I last looked into it typically include industrial and agricultural water use - residential water consumption is usually approximately 15% of total water use, so that fits reasonably.
One problem is that in many countries, water consumers (e.g. farmers) are able to withdraw water from their own soil, and so nobody really knows how much water that is, although it's possible to make educated guesses.
[1] https://www.statista.com/statistics/263156/water-consumption...
1. Those numbers are from all the rain hitting the pasture divided by by the cows mass (that is eatable)
1.a including whatever it eats
2. The way it's told makes it seem that none of the water is reused which is not true Though beef is a water intensive 'crop' it is not as bad as certain people makes it out to be.
Edit: formatting