Types of filtration technology

Clean and safe drinking water is essential for maintaining a healthy lifestyle. Many households are investing in home water dispensers equipped with filtration systems due to more emphasis placed on wellness. These systems employ various filtration technologies to remove impurities, ensuring that the water you consume is pure and free from harmful contaminants. In this article, we will explore different filtration technologies commonly used in home water dispensers, along with their pros and cons.

Activated Carbon Filtration: Activated carbon filtration is one of the most popular and widely used technologies in home water dispensers. It utilises activated carbon, which is known for its exceptional adsorption properties. The carbon effectively removes chlorine, volatile organic compounds, bad tastes, and odours from the water. Additionally, it can reduce some heavy metals and pesticides. However, activated carbon filters are not efficient in removing dissolved minerals, salts, or microorganisms from the water.


  • Effectively removes chlorine, VOCs, and unpleasant tastes and odours.
  • Relatively inexpensive and widely available.
  • Requires minimal maintenance and is easy to replace.


  • Limited effectiveness against dissolved minerals, salts, and microorganisms.
  • Shorter lifespan compared to other filtration technologies.
  • Frequent filter replacements may be required.

Reverse Osmosis (RO) Filtration: Reverse osmosis filtration is a highly efficient and comprehensive water purification method. It employs a semipermeable membrane to remove a wide range of contaminants, including heavy metals, dissolved solids, bacteria, viruses, and even radioactive substances. RO systems provide excellent water quality, but they also generate wastewater during the filtration process, resulting in some water wastage.


  • Removes a broad spectrum of impurities, including dissolved minerals, salts, and microorganisms.
  • Produces high-quality, purified water but may not be necessary for Singapore households
  • Suitable for areas with poor water quality or specific contamination concerns.


  • Wastewater generation can be a concern.
  • Requires professional installation and periodic maintenance.
  • Slower filtration process compared to other technologies.
  • May remove bacteria and other materials due to the intense purification process
  • Not able to differentiate between good and bad minerals and it will just filter out all kinds of minerals

Ultraviolet (UV) Purification: UV purification is a chemical-free method that utilises ultraviolet light to destroy bacteria, viruses, and other microorganisms in water. It is often used in combination with other filtration technologies to provide a comprehensive purification process. While UV systems effectively eliminate harmful pathogens, they do not remove dissolved solids, chemicals, or heavy metals.


  • Highly effective at disinfecting water by eliminating bacteria and viruses.
  • Chemical-free and environmentally friendly.
  • Easy to install and maintain.


  • Does not remove dissolved solids, chemicals, or heavy metals.
  • Requires a power source to operate effectively.
  • Regular bulb replacement is necessary to maintain optimal performance.

Ceramic Filtration: Ceramic filters are composed of small pores that trap impurities as water passes through. They can effectively remove sediments, bacteria, cysts, and some parasites from the water. However, ceramic filters do not eliminate chemicals, dissolved, or heavy metals. It may still require further filtration to ensure a more in-depth purification.


  • Efficient removal of sediment, bacteria or cysts
  • Durable and long lasting
  • Does not require water pressure or electricity


  • Limited effectiveness against chemicals, dissolved solids, or heavy metals.
  • Regular cleaning is necessary to maintain optimal performance.
  • May require additional filtration stages for comprehensive purification.


Choosing the right filtration technology for your home water dispenser depends on your specific water quality concerns and preferences. Each technology has its pros and cons, and understanding them will help you make an informed decision. Activated carbon filtration is suitable for removing taste, odour, and chlorine, while reverse osmosis provides comprehensive purification. UV purification effectively kills bacteria and viruses, while ceramic filtration excels at sediment and bacteria removal. Consider the quality of your water supply and consult professionals before you decide on any choice of filter.


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