Using water wisely?

According to the California Energy Commission (cited in Paul Gipe's WIND ENERGY COMES OF AGE, John Wiley & Sons, 1995), the water used to generate electricity from non-renewables is considerable.

Nuclear 2.3 litres for each kilowatt hour
Coal 1.9 litres for each kilowatt hour
Solar 0.110 litres for each kilowatt hour
Wind 0.004 litres for each kilowatt hour

According to the latest national water account (2001) the Electricity and gas supply industries used almost as much water (1,687,778 million litres) as the water industry (1,793,953 million litres)

Is that using water wisely?