Water is the most vital thing for our survival. You should keep few things in mind when you go to purchase a water purifier.When you go for purchasing water purifier you don’t actually look the technology behind that. You would end up buying the water purifier from some brand that you saw on TV.
When you fall ill, your Mother gives you boiled water because she has the understanding that boiled water kills the bacteria in the water. Choosing the right water purifier mainly depends on the type of water that is supplied to your house. If water in your area has a high TDS level and hardness, you need to opt for an RO water purifier.
DIfferent areas have different TDS. If you live in any city, you need to know that the water is as such polluted and contaminated with metals like Cobalt, Arsenic etc. If you drink water with higher TDS, you tend to end up getting kidney stones. So you need to be careful in drinking water with a higher TDS. The water having high TDS should be filtered using the RO purifier and then consumed.
As per WHO standards, acceptable TDS is 500mg/L or 500 ppm. Acceptable TDS level of drinking water is between 150-300.
TDS less than 100 is considered hypotonic. The water is depleted of the minerals. People find the water tasty though.
When you see the ad on TV about RO water purifiers, you don’t have any idea of what RO does.
RO is a water purification process that uses a partially permeable membrane to remove ions, unwanted molecules and larger particles from drinking water. Through this process the contaminants are filtered out and flushed away, leaving clean, delicious drinking water. RO membranes are generally fragile.
There are RO water purifiers with TDS regulators and there are others with automatic TDS regulator inbuilt so that the system itself decides the right TDS for you.
You can check the TDS of water using a TDS tester and see what the TDS is and then can make your decision in buying the right water purifier.
Generally RO+UV is considered to be a good choice for the water you get in India. RO is also required only at places where the TDS is greater than 500. These are places where they directly take water from borewell.
RO filters have holes that are of size 0.0001 micron
UV filters are used to kill the bacteria/viruses that is present in water.
UF technology is the filter which has size of 0.01 micron.