How to buy Water Purifier Guide

How to choose a water purifier for home in India?

The best way to select a water purifier to buy in India is to follow the following procedure. There are three steps to choose the most suitable water purifier for your house.

  1. Find out the quality of your water supply.
  2. Based on the Water Test results, select the type of water purifier to buy
  3. Finally to buy the water purifier, do online research on water purifiers on the leading Indian online sellers of water purifiers:, and

We explain below in detail about each of these steps in buying a water purifier.

How to know quality of your water supply

The only sure way to find out the quality of supply water is to do a Water Analysis in a Water Testing Laboratory. Many water purifier sales personnel will tell you they will do it themselves or will say that they will get it done at their cost. Our suggestion is that you give a sample of your water to a reputed water testing laboratory yourself and be sure that you are getting an accurate and reliable water analysis. Our page on water testing explains on how to test water and the procedure for taking a water sample to be given to a lab for water testing .....More. We have a sample water test report results at the bottom of this page and also an explanation on understanding the water test result.

The best way to find a water testing lab near to your place is by a net search, Google search for terms like "water testing labs xxxxxx (your place)". The cost of water testing in India is between Rs.300- to Rs.1000- depending on where you get your water tested. After getting the water test lab report, check to see what water test results are off limits. Our recommendations for the type of water filter to buy depending on the water test results are as follows:

Selecting type of water purifier to buy

The selection of the type of water purifier to buy will depend on the results of the water test report. We give below how to select water purifier based on water test report.

Best water purifier for Corporation water in India

The water test results of tap water in big cities like Mumbai, Delhi, etc. should show that all tested water parameters are within safe limits. The Municipal corporation water supply in India should be safe with regards to the TDS of water and you can be sure that there will never be any poisonous chemicals like Arsenic in it. What you have to be afraid of is bacterial and virus contamination of the water - not always, but on rare occasions it might be there. Our recommendation for the best water purifier for Corporation water in India is to buy one of the many types of Gravity Filters that are available in India from all the leading manufacturers of Water purifiers in India. A Gravity water filter with the auto-fill feature will be good since the water filter will fill automatically from the tap water supply. Gravity Water Filter Purifiers working on Ultrafiltration Membrane or Gravity UF water filter purifier will be the best choice. What is UF water purifier, is described on our page on UF water purifier filters.

You could opt for a UV water purifier filter but this will require electricity to work. An Activated carbon filter element included with either a UV or Gravity water purifier will improve taste of water. Activated Carbon will get rid of any organic contaminants and helps in removing trace amounts of lead or other heavy metal contaminants. Activated carbon will also remove chlorine and its by-products and improve the taste of water.

Best water purifier for water with problems

When the water test report shows water with some problems, it is best to buy the ultimate type of water purifier that can purify and get rid of all contaminant impurities in water, namely an RO Water Purifier. The RO Water Purifier is the best ultimate water purifier to buy because it can purify all known water problems in India. So if your water test results show that the TDS is high, then only an RO water purifier can reduce the TDS of water by removing the excess dissolved salts. How an RO water purifier works is explained in our page on Reverse Osmosis

If you are going to buy an RO water purifier filter, then a water analysis may not be necessary, since it is the best water purifier filter and will purify the water of all contaminants. The only check you will have to do, in case of buying an RO water filter, is to confirm that the incoming water TDS is within the working limits of the RO water Filter Purifier you plan to buy.

Online Shopping for Water Purifiers, Comparing prices and buying Water Purifiers Online

The best way to buy water purifiers is to do an online shopping for water purifiers on India's leading online retailers: Amazon, Flipkart and Snapdeal. The advantage of purchasing water purifiers online is that you get to see all models of water purifiers side by side and you can compare the prices of different models of water purifiers on a single web-page of each of the three leading online retailers of water purifiers in India.

Online shopping for Gravity Water Filter Purifiers

Here is the link to all models of Gravity Water Filter Purifiers on the website of Gravity Filters on

Online shopping for RO Water Filter Purifiers

Here is the link to all models of RO Water Filter Purifiers on the website of All RO Water Purifiers in India with Price on

Drinking water test report in India

Below we give a typical drinking water test report in India which is tested as per Indian Standards IS.10500. It is only provided to give you an idea of what a Water Test Report looks like. In the water test report results below all the water parameters are within limits and, even though just a simple water filter will do, it is recommended to go in for a UF water purifier filter because you can be sure that no bacteria or viruses will come through the water.

Sample Water Test Result
1Colour5 Hz units5 Hz units max
4Turbidity2.3 NTU5 NTU max
5pH 7.396.5 to 8.5
6Total hardness as CaCO3208 mg/l300 mg/l max
7Iron as Fe0.14 mg/l 0.3 mg/l max
8Chloride as Cl235.39 mg/l 250 mg/l max
9Dissolved solids358 mg/l500 mg/l max
10Calcium as Ca73.73 mg/l75 mg/l max
11Magnesium as Mg5.83 mg/l30 mg/l max
12Copper as CuNot detected 0.05 mg/l max
13Manganese as MnNot detected0.1 mg/l max
14Sulphate as SO445.06 mg/l200 mg/l max
15Nitrate as NO31.41 mg/l45 mg/l max
16Alkalinity as CaCO3150 mg/l200 mg/l max
17Boron as BNot detected1 mg/l max
18Arsenic as AsNot detected0.05 mg/l max
19Cyanide as CNNot detected0.05 mg/l max
20Phenolic compoundsNot detected0.001 mg/l max
21Zinc as ZnNot detected5 mg/l max
22Chromium as Cr6+Not detected0.05 mg/l max
21MercuryNot detected0.001 mg/l max
22LeadNot detected0.1 mg/l max
23Mineral Oil 0.14 mg/l0.03 mg/l max
23Fluoride as F 0.14 mg/l1 mg/l max
24Aluminium as AlNot detected0.03 mg/l max
25Residual free chlorine0.15 mg/l0.2 mg/l min
26Organic matternot detected-
27ColiformsAbsent in 100 mlAbsent in 100 ml
28E.coliAbsent in 100 mlAbsent in 100 ml

How to read a Water Test Report

Once you have the water analysis test report in your hands, study it properly. Check each line of the water test report, at the side of the actual value of your water test result will be written the permissible limit of water contaminant that is allowed within the safe limits set by Indian Drinking Water Standards BIS.10500 a copy of which is available on our page on Water Standards.

If, for example, the TDS in your drinking water supply is above 500 mg/liter, then the only solution to get the water to drinking water standards is by using an RO water purifier. If toxic chemicals like Arsenic, Lead, Mercury or Chromium-6 is above the limit, then RO water purifier is again the best solution. If for example all the water quality test parameters are within the limits but there are some organics in the water, like Phenols or Mineral Oil, then just an activated carbon filter will do. Different types of water purifiers are available as explained in detail in our page Water Filters Purifiers.

Best way to buy Water Purifiers in India

The best way to buy Water Purifiers in India is to first look at all models of Water Purifiers available online at the leading online Retailers in India. For example on the online webpage of All Water Purifiers available in India on, you will find the full range of Indian Water Purifiers complete with their best discounted price and full specifications. This is great information, and you can decide on which model of water purifier to buy. With the model of water purifier you want to buy finalised, you can go to local shops to try and find the model of water purifier you have chosen and see if you can get at similar price of that at In most cases the price from Amazon will be cheaper, because they buy in bulk from the manufacturers direct and they sell huge volumes because they are the world's largest and most trusted online retailer. If you buy from Amazon, they will arrange to have the water purifier installed in your house, usually free of charge.

Warranty and other facilities offered through Amazon are usually better than what you can get from local agents of water purifiers.

All pages in our website

Below are links to all the pages on this website and we hope you will make full use of all the great information about Indian Water Purifiers provided here.