In India we have rivers, ponds, wells , tube wells as the source of drinking water.
India is a peninsula and covered with Sea from all the three sides! But for the drinking purpose we depend on the above said sources.
We get water from these sources and we purify it by the recent techniques and su[pply it for the consumption of the people!
Most of the time the water taken out from tube well is already pure and fit for drinking!
What are the sources you have to provide drinking water to the people of your country!