The water we receive at our homes is not necessarily healthy or clean. They could contain harmful substances such as pesticides, rust, bacteria, viruses etc. Water borne diseases also impacts your health.
The TDS or total dissolved salts in water is an important yardstick that determines the quality of drinking water. According to World Health Organization, TDS level less than 300 mg/litre is considered excellent, from 300-600 mg/litre is good, from 600-900 is fair, 900 – 1200 is poor and anything beyond that is unacceptable.
Water purifiers should be able to do the following:
It should be able to kill the harmful substances mentioned above.
It should also be able to retain the natural minerals that are good for our health.
However, the TDS levels of water in the area that you stay would also play an important role in the selection of a water purifier.
Before buying a water purifier, it is important to understand the types of water purifiers available:
Reverse Osmosis (RO) water purifier: RO water purifiers remove metals, rust, pesticides and other toxic material from the water. However, they also remove the useful minerals in water unless the operate in tandem with a TDS controller.
Ultraviolet (UV) water purifier: UV purifier have a bulb located inside it which kills the bacteria, viruses, and other harmful particles but they cannot remove the dissolved salts from the water.
Ultrafiltration (UF) Water Purifiers: UF purifiers use a very fine membrane of less than 0.1 micron that kills bacteria, viruses and any other harmful micro-organisms present in water.
RO+UV water purifiers: Some brands of water purifiers come with both RO + UV technologies. These work with all kinds of water and ensure that all kinds of harmful substances are eliminated.
Our recommendation is that you purchase a water purifier that has RO+UV technology embedded in it and has a TDS controller. This will ensure that bacteria, viruses, rust, and other toxins are removed and essential minerals present in water are retained.
Other than the type, a few more checks are essential before buying the water purifier:
Capacity of the water purifier: Most of the water purifiers have a storage tank to store the purified water. For a nuclear family, a 7-10 litre water purifier would suffice. However, it would be a good idea to gauge the requirements of the family on a hot summer day and check if the tank’s capacity would meet the requirement.
Is the water purifier electric or non-electric: There are gravity based water purifiers which do not require electricity to operate and cost very less. However, the water purifier with RO+UV+TDS controller is an electric one and does cost a bit more. You should firstly analyse the level of TDS in the water in your area, the size and consumption of your family and then decide whether you would need an electric one. Our recommendation still is an electric water purifier with the above-mentioned capabilities.
Support and Maintenance: After you install a water purifier at home, a good water purifier provides a filter change alarm, UV bulb change alarm etc. If corrective action is taken immediately, it enhances the life of the water purifier. Hence, prompt support and maintenance become a very important aspect. You should buy from a renowned brand to enhance the possibility of getting excellent support and maintenance services.
How is the water purifier rated? Does it come with a guarantee/ warrantee, what is its installation cost?
These are common questions that any customer could have. However, the questions are very important from the learning point of view and for planning purchases better. Do check the reviews about the product on avenues such as play store, multiple e-commerce portals etc. It is also important to check if there is a warranty or guarantee on the product. Top brands such as Kent and Tata offer free installation while other brands charge for it.
Ideally, if all the above factors are given careful thought, it is not very difficult to buy a water purifier that can work well and last longer.