I am suggesting the following water purifier brands as they have good reviews and popularity in India.
KENT Grand 8-Litres Wall-Mountable RO + UV/UF + TDS Water Purifier
Kent is one of the most renowned water purification brands in the world, and The Kent Grand Plus Water Purifier is based on a patented Mineral ROTM technology. The Kent Grand Plus gives you the safest drinking water since the water purifier employs a double purification of Reverse Osmosis + Ultraviolet + Ultra filtration that removes even the Dissolved salts and impurities.
Most trusted and largest selling RO water purifier with a transparent design that shows off KENT's patented Mineral RO technology and an inbuilt TDS controller. Best suited for Indian homes and offices and suitable for purification of brackish/tap water/municipal corporation water supply.
Pros:
Best Value For Money RO + UV + UF
Mineral ROTM technology
8 Litre Storage
Water-Level Indicator
Suitable for All water sources
Cons:
RO Water purifiers will waste some water
See more about KENT Grand 8-Litres Wall-Mountable RO + UV/UF + TDS Water Purifier
Livpure Glo 7-Litre RO + UV + Mineralizer Water Purifier
The Brand New Livpure Pep Pro is one of the Top Rated RO water purifiers that is rated 4+ Stars by more than 500 Real Buyers at Amazon. Sporting a storage capacity of 7 Liters Livpure Pep Pro water purifier implements RO, UV and UF technologies to deliver the pure water.
The Livpure Glo 7-Litre RO + UV + mineralizer water purifier comes with a large storage of 7 litres and is packed with numerous features that ensure that you have ready available water at all times. This system works even in the absence of water or electricity as it can store purified water. Embedded with an advanced filtration system, Livpure ensures 100% pure water every time.
Pros:
RO + UV + UF
TDS Levels upto 1500 ppm
7 Litre Storage
Sleek and compact design
Cons:
Water wastage
See more about Livpure Glo 7-Litre RO + UV + Mineralizer Water Purifier