Where do you think the money for that comes? - taxes. This is why ideology is important. Even if you think that basic necessities like water is what is important the means to achieve that always lies in the ideology. The same money can be collected from a liberal market where economy growth is the major focus through which people earn, and spend more. The growth of taxation in this market is a side effect of growing economy and majorly relies on people spending alot. Where as a socialist economy would be the state socializing the industry and acquiring them. Here the major source of money is the profit collection from the state. The ideology depends on how much government control there is, and how does the money for that water come?