When I grew in our town before, our tap or drinking came from a local water system which supplied the whole place where we live. The water we drink and use for cooking comes from the Water District. It's cleaned and closely monitored by the city government.
So I am already 69 years old that means we're using a tap water from the mentioned government agency.
Before we paid a flat rate for our monthly water concession. Now at this present time, our water supply is metered.
We could only have a bottled water when we go school. We just get the drinking water in a storage provided for. We call the water vessel as "banga" for we didn't have a water dispenser.