Changing water price on demand is not easy, but I can see dynamic pricing on parking meters ranging from free suring periods of very low usage to a few dollars a hour during high usage.
The infrastructure for pricing electricity on demand already exists, at least where I live. And that is rolled out to all private residences. Why couldn't that be done with water?
I assume at some level that becomes effectively a tax on businesses though as some shoppers stay away on average (albeit making parking easier for others) while the government collects more revenue. (That said, in a lot of places, there probably isn't enough on-street metered parking to meet demand at any reasonable price.)
