It usually is not, depending on what you mean by ‘government’.
Even some of the large metropolises don’t get much water from state sources - San Francisco and the Bay Area for instance is almost exclusively using Water sources it purchased a long time ago. It’s why most of the hills east of Milpitas are private property of San Francisco Water, for instance. Most of the water that feeds LA, the city itself bought control over (and quite controversially so).
Often it is pumped from private wells on private land.
Often when it isn’t, it is part of large regional co-operatives of farmers, who buy land and then sink wells under it for water.
The rare times that isn’t the case, the ‘government’ is the local county water control board, not the state or feds.
The rate times THAT isn’t the case, it’s often overflow from flood control, or part of outflows from reservoirs built for flood control - where the water HAS to be let out or there will be flooding, depending on the season.
I’ve lived in California my entire life, and I’ve only gotten water from anything state owned on very, very rare occasions (aqueduct) and it’s terrible.
We as a society are paying for it, they get it far cheaper than cost.
They are very comparable: both are water, being provided from a very finite source.