How many gallons of water does it take to produce 1 million gallon of ethanol?

Question

This could create problems for the enviroment

Answer 1

17,000,000 as the alcohol content of brewed batches are at a optimum best at 17% before distilling starts. so the ratio is 17 to 1 .
Now for the amount of reclaimed water that might be recycled will vary from plant to plant.

Answer 2

New ethanol plants use about 3 gallons of water per gallon of ethanol produced, so it takes about 3 million gallons of water to produce 1 million gallons of ethanol.