1. How do we use rejected water?

Rejected water from the purifier is not suitable for human consumption as it mostly contains 90 to 95% of pollutants. But you can use this water for several purposes like floors, toilets, cleaning utensils, floor and bathrooms. If you have a garden or plants, you can use this water for watering them.

2. Is boiling alone enough for removing TDS levels?

Unfortunately, boiling alone is not enough to remove or decrease the TDS levels. It will be helpful just in killing the micro-organisms present in the water source.

3. How to check if the RO is producing excess waste water?

Expelling a lot of waste water is the main drawback of RO water purifier. In most of the cases, to produce 25% of pure water, it expels 75% of waste water. If the TDS levels of your water source are low, then waste water generation will be less too. So, to find out whether your RO water purifier is generating more waste water, check the TDS levels of water source. If the TDS levels are low and still 75% water is wasted, then consult customer service for professional help.

4. What is the shelf-life of a water purifier?

A good trusted brand with all the necessary certifications work impeccably for about 5-7 years. Although frequent filter changes are needed. Factors such as supply water quality, filter, maintenance and mechanism also play an important role in determining its shelf-life.

5. How long can one store water in the purifier tank?

Although most of the brands use food grade plastic to build their storage tanks, it is advisable to use consume the water within three days of purifying it.

6. Electric or non-electric purifiers. Which is better?

Functionality of both the purifiers are the same but differ from each other when it comes to the flow rate, form of filter used and storage. RO+UV filters work best with high TDS level water. However, they need constant supply of electricity and water. RO purifiers even waste a lot of water. On the other hand, non-electric/gravity based filters save water and electricity while their functionality limits only to water with low TDS level.

7. Are TDS and hardness of water the same?

Hardness constitutes a part of TDS but not the other way round. Hardness basically represents the measure of calcium and magnesium salts in water. Whenever hard water percolates, limescale buildup in the tank/membrane can be observed. TDS is the measure of total dissolved salts which constitutes of both organic and inorganic compounds. The dissolved salts include lead, fluorides, sodium, potassium and other minerals along with calcium and magnesium.

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11 Best Water Purifier In India 2021 Reviews & Buying Guide

Updated by

Apoorva

on May 10, 2021

Water Purifiers are an essential commodity for every Indian household.

According to Ministry of Drinking Water and Sanitation, Govt. of India, almost 37 million people and 1.5 million children in India are frequently suffered with diseases associated with contaminated water.

Being a matter of your health, it is important to choose the right one. Some of the important considerations are mentioned below…

1. Water Purification Technology

There are four types of purifying technologies – RO, UV, UF and Gravity based. Each of these technologies the capability of removing different kinds of contaminants. Below table refers to information on how to select the right purification technology based on your requirements.

TDS Value	Muddy Water	Presence of Biological Impurities	Ideal Water Purifier
Less than 500 PPM	No	Yes	UV
Less than 500 PPM	Yes	Yes	UV+UF
Less than 500 PPM	No	No	Gravity-Based
Less than 500 PPM	Yes	No	UF
Above 500 PPM	No	No	RO+TDS Controller
Above 500 PPM	Yes	Yes	RO+UV+UF+TDS Controller
Above 500 PPM	No	Yes	RO+UV+TDS Controller
Above 500 PPM	Yes	No	RO+UF or RO+UV+UF TDS Controller

2. Purification Capacity

It is represented in terms of liters/hour. Ideal purification capacity depends on your average water requirement of your family. On average, 12 to 15 liters/hour is ideal for most of the Indian households.

3. Storage Capacity

Most of the water purifiers in India come with storage capacity of 7 to 12 liters. For a family with 4 to 5 members, 6 liters’ storage capacity is enough. However, for a bigger family or if you have regular power cuts, then go for large capacity.

Other factors to consider are – storage capacity, flow rate, quality and indicators. You can read them clearly in our “Buying Guide”.

Along with that, we have also provided a list of Best Water Purifiers In India.

Table of Contents

11 Best RO Water Purifier In India

RO water purifier	Type	Capacity	Warranty	Buy Now
KENT Grand Water Purifier	RO + UV+ UF + TDS	8 litres	1 Year	Check On Amazon
Eureka Forbes Aquasure Smart Plus	RO+UV+MTDS	6 litres	1 Year	Check On Amazon
Aqua Libra Water Purifier	RO+UV+UF+TDS	14 litres	1 Year	Check On Amazon
Blue Star Aristo Water