Demand and Necessity
Water is critical for the survival of all human beings and water that we receive at our homes may contain many harmful toxic chemicals. This becomes the cause of many different diseases like cancer, heart ailments, metabolism problem, and others. They also contain pathogens and bacteria that are cause for many other illnesses and infections. Due to all these above impurities, the immune system weakens and overall health will be affected. The water quality differs from cities to cities and area to area. Hence there is always a demand for water purifiers. There are many different types of water purifiers, that can be used depending on the water that you receive at home, which we will look into in some time. But before that let us see what are the most harmful chemicals fount in the tap water.
Pollutants noticed in tap water
- Chlorine and Chloramine
- Pesticides and Pharmaceuticals.
- Lead and Mercury
- Bacteria and pathogens
- Fluoride, Arsenic and much more
The above impurities are collectively found in water, but to measure the level of concentration of all the dissolved substances and impurities, we use something called TDS, TDS stands for total dissolved solids. We shall shed more light for you on TDS:-
What is TDS?
As said before TDS stands for total dissolved solids and the pollutants that are bigger than 2 microns are called TDS. The TDS standard set by WHO is 300ppm, which means the TDS level of the water should be less than 300ppm, for it to be fit for drinking. However, according to BIS(Bureau of Indian Standards), the TDS level of water should be below 500ppm in India to be fit for drinking. The tap water usually has around 1000-3000ppm value.
Classification of technologies used in purifiers
- Reverse osmosis(RO)
To get rid of all the dissolved salts, chloramines, minerals, nitrates, and heavy metals the water is passed through a porous membrane, this is called reverse osmosis. This process will filter out all impurities from the water and make it suitable to drink.
- Ultra Violet (UV) and Ultra Filtration (UF)
To eliminate the pathogens and microorganisms causing water-borne diseases we use UV technology. UV technology doesn’t eliminate the hardness of the water but is useful to remove all diseases causing microbes and pathogens.
The UF technology assists in wiping out the suspended solids. This is not much useful in eliminating pathogens.
- Activated Carbon Filter
This technology will help in eliminating chlorine, benzene, trihalomethane (THM) chemical compounds and it also cleanly wipes out pesticides, VOC(Volatile Organic Chemicals) and herbicides. It can also assist in eliminating carbon from the water.
Purifier to choose based on the quality of the water
- For water with normal hardness and low TDS, RO purifiers are enough for purification of water.
- If the water with normal hardness and high TDS a combination of RO and UV is recommended.
Depending on the condition of the water we will have to choose the purifier. While you are buying a purifier ask your seller to perform a water quality check so that you can decide on the right one. We hope the above article helped put some light on types of impurities, purification technologies and the purifier type that would best suit you and your family, to stay safe and healthy.