The Vegetarian Resource Group has a graphic called Burrito on My Plate, which shows viewers the water footprint of a vegan versus a meat-based burrito. It takes 225 gallons of water to make a vegan burrito without tofu and 253 gallons of water to make a vegan burrito with tofu. In comparison, it takes 541 gallons of water to make a beef burrito.
The Burrito on My Plate Graphic can be seen here: https://www.vrg.org/environment/BurritoOnMyPlate.pdf
The article detailing how we came up with the numbers of gallons of water needed to produce each type of burrito can be found here: https://www.vrg.org/journal/vj2017issue2/2017_issue2_burrito_plate.php