[PeterStuer]

"If a household can’t afford it, then a necessary normal amount should be provided, but let others fund the infrastructure we need."

This sounds ass backwards. If a company can supply water into the communal system at the current supplier prices, they should be free to do so, taking into account corrections for negative externaities etc. .

However, if they insist on creating a price differentiation on vital commodities, I think the state has an obligation to prevent them because otherwise the system of basic survival solidarity goes down the drain (maybe even literally in this case).