And on the subject of water consumption, you have to consider...

And on the subject of water consumption, you have to consider the price.
Urban water in australia costs about 1.50 a cubic meter. Farmers in the riverina have been paying about 1.00 for emergency supplies, which is more than 10 times what they usually pay.

A cubic meter of petrol is currently worth $1,700.00

So even if you were paying $5 a cubic meter for water and you needed 4 cubic meters of water to make a cubic meter of fuel, thats $20 of water for $1,700 of fuel. Its not a big deal.