Q.1015: How much water is used to make one ton of paper?
Ans. There are paper plants which has Zero Effluent Discharge. That means these plants reuse and re-circulate all their water.
If no water is reused and/or re-circulated, plant may use as much as 300 - 400 ton or cubic meter of water to make one ton of paper.
Most of water efficient plant in North America and Europe uses 10 to 25 ton or m3 of water per ton of paper. In English unit one ton (2000 lbs) paper will need 2500 to 6000 gallon.