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hands filling water bottle from coway aquamega

The science behind triple-filtered water

In the world of water filters, not all are created equal. Why have a single filter water filter system when you can have a triple-filter? Yes, some people use a water pitcher with a single filter. This may seem fine at first, but it gets tiresome (and costly) to frequently replace the filter. It also fails to address the more complex particles often found in drinking water.

With the goal of creating a more robust filtration system, the scientists at Coway have developed the Coway Aquamega 100 system with three filters, certified by the WQA.


Filter one

The Coway Aquamega 100 begins with a sediment filter. Its role is to remove the larger particle contaminants in drinking water. This includes sand, silt and small pieces of clay, among other things. The sediment filter is the first line of defense in purifying drinking water, as it removes the most coarse elements. Through this filter, turbidity, or the “cloudiness” in water, is already reduced.


Filter two

Once the larger particles are removed, the water flows into the second filter. This one reduces the smaller particles of contaminants, like chlorine, in drinking water.

This filter also houses the initial activated carbon filtering process. The carbon acts as a very fine net for tiny contaminants. This filter helps to reduce numerous potentially harmful impurities. For starters, the entire system eliminates lead, cysts and volatile organic compounds, all by over 99 percent.


Filter three

The third and final filter in the system creates the finishing touch for crisp, clean drinking water by eliminating any remaining odors or lingering foul tastes. A lot of this work has already been done by the previous two filters, and the post-carbon filter gives the water one final stage of cleanliness.

Together these three filters make up a water purification system that delivers safe, delicious drinking water to your home every day. The filters only need to be changed approximately twice a year. And because the Coway Aquamega 100 attaches to the kitchen faucet, you and your family can enjoy unlimited amounts of free-flowing water. (No pitcher refills needed.) It’s pure water for coffee, tea, lemonade—you name it—or just to quench your thirst.


1Coway air purifiers have been proven to trap dust, pollen, dander, viruses and bacteria in the air based on KCL (Korea Conformity Laboratories) testing.They have been tested in a 30㎥ size chamber according to the Korea Air Cleaning Association standard (SPS-KACA 002-132:2022 Modified) to measure the 0.01㎛ size of particle removal rate. It was tested on maximum airflow speed in normal room temperature and humidity conditions. The performance may vary in the actual living environment of customers.
→ Tested with Airmega Aim, 100, 150, 160, AP-1216L, AP-1512HH, AP-1512HHS, 200M, Icon, IconS, 230, 240, 250, 250 Art, 250S, 300, 300S, 400, 400S, ProX

299.97% of viruses, bacteria, fungi and pollen were verified to be removed from the air for Coway air purifiers which have Green True HEPA™ filter applied based on the Japan Food Research Laboratories(JFRL) testing according to JEM 1467 standard.
→ Tested with Coway Airmega AP-1512HH, AP-1512HHS, 250, 250 Art, 250S, 300, 300S, 400, 400S
→ All tested by JFRL and received above result within below time.

All tested by JFRL and received above result within below time.

- Virus: Tested with Escherichia coli phage ΦX174 NBRC 103405, 60 minutes
- Bacteria: Tested with Staphylococcus epidermidis NBRC 12993, 60 minutes
- Fungi/Mold: Tested with Penicillium citrinum NBRC 6352, 60 minutes
- Pollen: Tested with Cedar Pollen extract, 60 minutes

3Aerosol test conducted in a Biosafety level 3 laboratory with two Coway air purifier models, Coway Airmega 250 and 400 for removal of SARS-CoV-2 Aerosol by US based MRI Global, a not-for-profit laboratory and partner of US Department of Defense. The test was conducted in a 13.1ft3 chamber. Virus was aerosolized for 15 minutes and the product was turned on high for 2 minutes. Result showed each product effectively removed over 99.98% of the SARS-CoV-2 in 2 minutes. This is a result from a laboratory experiment condition and result may vary in different conditions. This result does not imply it kills SARS-CoV-2 or prevents the transmission of Covid-19. Coway Airmega 250S and 400S are identical to the tested models and has equal performance with an additional mobile connectivity function.

4The concentration of ammonia, acetaldehyde and acetic acid were proven to be removed within 30 minutes by FCG Research Institute, Inc. Human Life Science Lab. It is not a demonstration result in the actual use space. Not all odors and gases may be supported. → Tested with Coway Airmega 150, 160, AP-1512HH, AP-1512HHS, 400, 400S

5The coverage area of the air purifier is based on an area where the air cleaner can make two air changes per hour (ACPH). An air change per hour translates to how many times an air purifier can clean an area, assuming the height of a ceiling to be 8 ft, in one hour. Therefore ** means two air changes per hour means that the cleaner can clean the area once every 30 minutes and * means air changes per hour means that the air purifier can clean the area once every 60 minutes.

10Terms and conditions apply. Discounts, including promotions, coupons, bundle discount and subscription discount, cannot be stacked on top of other coupons. During promotional periods, discount codes will not be able to be applied to orders. Promo codes may apply to products only—filters, accessories, and new products within 3 months of the release date are not included.