Our body uses water to provide energy to cells, tissues, and organs. Water regulates our body temperature and keeps us hydrated through the day. It is necessary that we drink clean and purified water for our body to get the minerals and the nutrients present in water. The water which we get from the taps at home is definitely not in its purest form (Drink Filtered) when compared to the water in open sources like rivers. The purification systems used to supply water to the normal household are not of good standards as the age-old pipes, the corrosion in them and the chemicals which are used as purification agents can cause bad effects on our health. Hence, it is recommended to drink filtered and purified water which will forestall such health risks.
Activated Carbon Filter
This technique uses activated carbon to remove impurities from water. Carbon has a porous structure and can trap the impurities in water in its pores and this process is called adsorption. Activated charcoal filters are effective in removing larger particles and chemicals like chlorine. With its wide surface area, carbon can trap most of the sediments and chemicals, but over time, when all the pores are filled with impurities, the filter becomes ineffective and must be replaced.
- Reverse Osmosis (RO)
A semipermeable membrane is used in this technique to remove ions, molecules and heavy particles from the water. Water is forced through the membrane and the impurities and other large particles are held to one side while the pure water is sent to the other side of the membrane. This is one of the most widely used techniques and can purify hard water and remove the saline content from it. The only disadvantage of using an RO filter is that around 50% of the total water input is wasted.
- UV Filters
UV filters are capable of killing pathogens like bacteria and viruses, microorganisms and cysts which contaminate the water. Water is passed through a UV light tube during which the pathogens are killed by its rays. However, the amount of absorption of UV by the microorganism matters. Higher the absorption, higher is the possibility of the death of the microorganism. Water with low TDS (Total Dissolved Solids) can be easily purified using UV filters but the filter proves ineffective for hard water and cannot remove chemicals like fluorides and chlorine.