After R2I, we found 3 choices for drinking water in India. We chose the 3rd option in this list.
1. Tap water with Reverse Osmosis (RO) filter
This is the most cost effective of the 3 drinking water choices and is widely used in India. Most households, restaurants, bars and hotels claim to have working RO systems. RO technology relies on a membrane filter that should have no cracks for the system to be effective. Worst of all, there is no way of knowing if the membrane develops a crack except repeatedly testing the water. Since workmanship and maintenance is frequently suspect, we’ve chosen NOT to use this system.