What about Ethanol?
You are concerned by the fresh water use by nuclear power? How much power do I get for the water used? What about what consumption of water to produce biofuels. According to a study the Virginia Water Resources Research Center in liters per 1000KWh:
Ethanol - 32,400-375,900
Biodiesel - 180,900-969,000
Nuclear - 31,000-74,900