Is Boiled Water Better Than RO Water?

Boiled water is often considered a preferred choice for drinking water because it has been boiled and is thus free from contaminants. However, this does not mean it’s better than Reverse Osmosis (RO) water. RO water has undergone multiple purification stages, including membrane filtration, thereby removing almost all kinds of salts, bacteria, viruses and other contaminants. Additionally, RO water also helps remove heavy metals like lead, arsenic etc., which cannot be removed through boiling. Therefore, it is better to choose RO water over boiled water for long-term health benefits. It is important to note that even though boiled water has some advantages over RO water, it should be stored in the right container and consumed within 24 hours to avoid contamination.

Is Boiled Water Better Than RO Water?

It depends on your water needs and what contaminants you want to remove. Boiling water is a basic purification process that has been used for centuries, and it can help rid water of bacteria, viruses, and protozoa. However, boiling water doesn’t eliminate other contaminants like heavy metals or chemicals, which is why reverse osmosis (RO) water filtration systems have become increasingly popular.

What Does Boiling Water Remove?

What Does Boiling Water Remove
Boiling Water Remove

Boiling water does have some benefits when it comes to improving the taste and reducing microbial contamination. A key benefit of boiling water is that it kills bacteria, viruses, and other microorganisms. Boiling causes these contaminants to die off, meaning that any potentially harmful organisms in the water cannot survive or reproduce. In addition, boiling also helps to reduce levels of certain minerals and other contaminants. For example, boiling can help reduce lead, arsenic, nitrates, chlorine and fluoride levels in the water. Boiling will not make all contaminants disappear from the water – it is simply a way to reduce their concentration.

What Does Reverse Osmosis Remove?

What Does Reverse Osmosis Remove
Reverse Osmosis Remove

Reverse osmosis is a filtration process that removes many contaminants from water. It works by forcing water through a semi-permeable membrane at high pressure, trapping larger molecules and impurities on the other side of the membrane and allowing only clean, purified water to pass through into the collection tank.

Some contaminants that reverse osmosis can remove from water including nitrates, lead, fluoride, chlorine, and other natural and man-made pollutants. Reverse osmosis also removes potentially harmful bacteria and viruses that can cause illness. In addition to purifying drinking water, RO systems are used for various industrial applications, including food processing and pharmaceuticals.

How Does Reverse Osmosis Remove Contaminants That Boiling Can’t?

In comparison, boiling water alone is not as efficient in eliminating the contaminants from drinking water. While it will kill most bacteria and other microorganisms, certain viruses may remain in the water after boiling. Additionally, high levels of lead and arsenic in water can’t be removed by boiling due to the high temperature required. As such, reverse osmosis is a much more effective method for eliminating these contaminants than boiling water.

While boiling water can help reduce bacteria and other microorganisms in the drinking water, it cannot eliminate certain particles that may still be present after the boiling process. On the other hand, reverse osmosis can provide a much more thorough filtration of drinking water and is more effective in eliminating contaminants than boiling alone. As such, reverse osmosis is preferred over boiling when providing safe drinking water.

Advantages Of Boiled Water For Health

  • Boiled water is safe to drink as the boiling process kills any bacteria or viruses present in the water.
  • Boiling can also reduce toxic metals, like lead and mercury, that may be present in water.
  • It’s a simple and cost-effective way to purify water. Boiling does not require any additional equipment or chemicals, so it’s a great choice for people who don’t have access to safe drinking water.

Disadvantages Of Boiled Water For Health

  • Boiled water is not free of contaminants such as lead, arsenic and other heavy metals, which can cause health problems when consumed in large amounts.
  • Boiling does not remove certain types of bacteria or viruses that may be present in the water, so if you rely on boiled water for drinking, it would be wise to invest in a reliable water filter.
  • Boiled water can also contain dangerous levels of nitrates, especially if the source water is contaminated with agricultural runoff or sewage waste. Nitrates increase the risk of cancer and other health problems if consumed over long periods.
  • If you are boiling your water, you should be aware that boiling does not remove harmful chemicals such as chlorine and fluoride. It can increase the concentration of some contaminants, so boiling does not always guarantee safe drinking water.
  • Boiling also increases dissolved solids in the water, making it harder to digest and contributing to scale formation on appliances such as coffee makers and kettles.

Advantages Of RO Water For Health

Advantages Of RO Water For Health
Advantages Of RO Water For Health
  • In municipal tap water, reverse osmosis water is free of harmful contaminants like lead, arsenic, and chlorine.
  • RO water has a much lower mineral content than boiled water, which may help reduce the risk of developing kidney stones or other health problems associated with high levels of certain minerals.
  • RO water also has a lower pH level than boiled water, which can benefit those with digestive issues or other conditions that may be affected by the acidity of their drinking water.
  • Reverse osmosis systems are much more effective at removing bacteria and viruses from your drinking water than boiling it, making it a safer choice for those looking to eliminate waterborne illnesses.

Disadvantages Of RO Water For Health

  • Reverse osmosis water (RO) is essentially devoid of essential minerals, such as calcium and magnesium. This can lead to electrolyte imbalance, which can affect overall health.
  • The process also removes beneficial bacteria from the water, making it less efficient for digestion and absorption in the body.
  • RO water also has a lower pH than regular tap water. This can impact the body’s acid-alkaline balance, leading to inflammation and other health issues.
  • The high pressure and temperature during reverse osmosis can also reduce any beneficial compounds in the water, such as antioxidants.
  • In some cases, reverse osmosis water can be contaminated by the materials used in the filtration process, such as activated carbon, which can cause gastrointestinal issues.

Boiled Water Vs. RO Water

Taste: Boiled water has no taste and is often preferred for its neutral taste. On the other hand, RO water typically has an unpleasant taste due to its mineral content.

Odour: Boiled water does not contain any odours, but RO water may smell depending on the quality of the filter used.

Taste: Boiled water has no particular taste. However, RO water can be slightly salty due to the mineral deposits collected during filtration.

Nutritional content: The nutritional content of boiled water and RO (Reverse Osmosis) water is generally comparable. Boiled water contains minerals like calcium, magnesium and sodium, which can help keep the body healthy. On the other hand, RO water does not contain any extra minerals as the process strips out these elements from the source.

Safety: Boiled water is safer than RO or distilled water when drinking because boiling kills germs, bacteria and viruses. However, RO (reverse osmosis) and Distilled water are largely free from contaminants and bacteria, making them safer for consumption.

Purity: Boiled water is purer than RO water if boiled properly. As the boiling process kills any bacteria in the water, it becomes safe to drink. However, RO water can also be very pure, depending on the quality of the filter and its maintenance schedule.

Cost: Boiling water is a free and easy water purifying method. On the other hand, Reverse Osmosis (RO) systems are more expensive as they require buying RO units, filters, and sometimes additional equipment.

Accessibility: The accessibility of boiled water and RO water varies significantly. Boiled water can be easily made from a pot on the stove or by boiling it in a kettle. However, RO systems require more complex equipment and professional installation. In addition, RO systems are expensive to buy and maintain compared to boiling water on the stovetop.


What happens when water is efficiently filtered?

When water is filtered, impurities and contaminants are removed. Filtering can include physical filtration, sedimentation, reverse osmosis, ultrafiltration, carbon adsorption, and other methods. This process helps ensure the water is free from harmful substances such as bacteria or parasites. The resulting water is then typically safe for drinking.

Can water purifiers help in supplying pure drinking water?

Yes, Water purifiers are a great way to ensure access to clean and pure drinking water. They use different filtration methods, including reverse osmosis (RO) or activated carbon filters, to remove contaminants from the water, such as sediment, bacteria, heavy metals and chemicals. A quality purifier will also filter out volatile organic compounds (VOCs).

Can I mix boiled and RO water?

Mixing boiled and RO water is not recommended. Boiled water can be used to top up the tank of an RO system, but it should never replace filtered RO water completely. This is because boiled water has higher levels of TDS (Total Dissolved Solids) than what’s produced by a reverse osmosis system. The TDS in boiled water can cause scaling within the RO membrane, leading to decreased performance and potentially damaging it.

How often should I change the filter in my RO system?

The frequency at which you should change the filter in your RO system depends on a few factors, such as the type of water you use (e.g. municipal or well), how often you use it and how many people use it. Generally speaking, manufacturers recommend changing the filter every six months or so for an average household with average water usage. If you use the RO system more frequently or have a larger household with heavier use, you may need to change it more often.

Is RO water safe for infants?

RO water is safe for infants and can provide clean and pure drinking water. It removes more than 99% of the dissolved impurities, bacteria, viruses, heavy metals and other harmful contaminants from tap water. The filtered RO water also has a neutral pH balance which helps to protect babies’ delicate digestive systems.


boiled water is not necessarily better than RO water. It depends on the circumstances and preferences of the individual. Boiled water can be a good choice if you want something inexpensive and convenient. However, it cannot filter out all contaminants like RO water can, so it may not be suitable for people with certain health conditions. Ultimately, it is important to research which type of water is best for you.

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