Tap water is ordinary drinking water straight from the pipe. A glass of tap water.
In much of the world it is tested far more often than anything sold in a bottle. Asking for tap water in a restaurant is free and mildly embarrassing, which is the whole business model.
1nountap waterOrdinary drinking water straight from the pipe.
“The tap water there tastes of the hills it came from.”
tap water is water.
Practised in Food & Drink