Yes they do or most people would be dead.
Because the polluted air make it harm for drinking for us
Safe drinking water usually comes from the lakes or
In most communities, tap water is safe for drinking.
bbb
using a safe fountain for clean drinking water
NO
boil it
there is none they have polluted water every wear but in some countries they have a higher risk of polluted water
Because the polluted air make it harm for drinking for us
Drinking water is water that is safe for a human to drink, it is said to be potable.
If the water supply is not contaminated with fluoride then yes it is safe. If it is contaminated it is unsafe especially for pregnant woman and children.
PVC pipes do not corrode, hence these are used for drinking water supply.