Boiling water, while an effective method for killing bacteria and pathogens, has several potential disadvantages:


Energy Consumption: Boiling water requires a significant amount of energy. Whether it's using a stove, an electric kettle, or another heating method, the energy consumption can be high, especially if you're boiling large quantities of water regularly.


Time-Consuming: It takes time to bring water to a boil. This can be inconvenient, especially in situations where you need clean water quickly.


Loss of Oxygen: Boiling can cause water to lose oxygen, altering its taste. Many people find that deoxygenated water has a flat taste.


Possible Contamination Post-Boiling: Once water has been boiled, it can become recontaminated if it's not stored properly. This is especially true in environments where the air or containers are not clean.


Does Not Remove Chemicals: While boiling kills bacteria and other organisms, it does not remove chemical contaminants like heavy metals, pesticides, or nitrates. In some cases, boiling can actually concentrate these chemicals.


Risk of Burns or Accidents: Handling boiling water comes with the risk of burns or accidents, particularly in households with children or when working in cramped kitchen spaces.


Cost: For people who rely on bottled or filtered water due to the poor quality of their tap water, boiling water can be an additional cost for gas or electricity.


Environmental Impact: The energy used in boiling water, especially if it comes from non-renewable sources, contributes to environmental concerns like greenhouse gas emissions.


These disadvantages make boiling water less suitable for some situations, and alternative methods like filtration or chemical purification might be preferred depending on the specific needs and context. And water purifier is an alternative to effective way to counter the disadvantage of boiling water.