RO water purifier advantages and disadvantages
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RO water purifier advantages and disadvantages

Reverse Osmosis(RO) water purifier is best suitable to treat hard water. RO water purifier removes dissolved materials, contaminants but RO water purifier not much effective over microorganisms.

RO water purifier uses semi-permeable membrane through which salty water forces to move. During this process it filter contaminants such as arsenic, nitrates, sodium, copper and lead, some organic chemicals. RO water purifier helps to convert hard water to sweet, soft water using RO membrane.

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Advantages of RO water purifier

  • Reverse osmosis (RO) water purifier is the best solution for treating hard water.

  • RO water purifier removes toxin such as lead, mercury, Fluoride, Arsenic, Chlorine which case human body to be ill. Lead metal can cause brain damage and anemia.

  • RO water filter is great for removing commonly found Cryptosporidium in lake, river and public supply water.

  • For example HUL Pureit Advanced RO Water Purifier(WCRO500) is one of the best RO water purifier.

Disadvantages of RO water purifier

  • Removes essential minerals: While RO water purifier removes dissolved impurities it removes natural mineral such as iron, magnesium, calcium and sodium which are essential to the human body and cause a mineral deficiency in the body.

  • Not kills bacteria, viruses: RO water purifier does not kill waterborne disease-causing bacteria and viruses.There high probability that microorganisms can pass through RO membrane( It is advisable to pass RO water through the UV water purifier to treat microorganisms )

  • Water taste altered: As natural minerals are removed water gets de-mineralized as a result water taste affected, it becomes tasteless.

  • More time to purify: RO water purifier takes too long to the purification of water.

  • Water wastage: Approximately much more water compared to filtered out water flushed down as waste water.

  • Expensive: RO water purifier costlier compared to counterpart water purifiers UV and RO water purifier consumes much more electricity.

  • RO membrane breakage: No mechanism is there, to know when to replace RO membrane. Chlorine can damage RO membrane. Chlorine makes small pores of RO membrane clogged and makes drastic reduction in performance.On breakage of membrane dissolved salts, bacteria, viruses can easily pass through RO membrane. It is advisable to replace RO membrane once in a year.

Please read our article best RO water purifiers to know famous RO water purifiers. Please check our articles on other water purification technologies such as UV advantages and disadvantages, gravity based and RO vs UV

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