Safe Drinking Water in India
Drink and drink only bottled water. Go to any shop and ask for Bisleri, the first bottled water brand, it is now a generic term for bottled water. If you don't have access to bottled water, you can have RO water (RO being reverse osmosis), a process to purify water. You can also boil water for about 20 minutes and then consume it within 2 days.