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chlorine tablets next to glass of water on purple background

Do you taste chlorine in your water?

We’re all familiar with chlorine in the swimming pool, but what does it mean when chlorine is swimming in our drinking water?

Chlorine kills waterborne pathogens

At both the pool and the tap, chlorine is used to treat water against harmful bacteria. According to an essay in Scientific American, “Chlorine effectively kills a large variety of microbial waterborne pathogens, including those that can cause typhoid fever, dysentery, cholera and Legionnaires' disease.”

4 milligrams per liter is safe

Chlorine was introduced as an inexpensive disinfectant for public water in the early 1900s. In the century since, its use has become ubiquitous in the United States. In fact, chlorine is used by over 98 percent of water utilities that disinfect public water. In New York State, for example, Erie Water Works just implemented a twenty-fold increase in the amount of chlorine in the water it serves to the region. The chlorine now stands at .20 milligrams per liter. This is well below the four milligrams per liter the Center for Disease Control outlines as its safety standard.

When chlorine mixes with other chemicals

The benefits of chlorine in fighting waterborne disease can not be understated. However, when chlorine mixes with other chemicals in the water, like fertilizer run-off, it can become an organic compound. As far back as 1980, it has been shown that large amounts of these compounds, called trihalogenated methanes, are linked to cancer in laboratory animals.

Potential cancer risk of organic compounds with chlorine

Fast forward to 2016, and the World Journal of Gastrointestinal Oncology published a study entitled, “Colorectal cancers and chlorinated water.” In academic parlance it stated that “the associated health threats including colorectal cancers and colon cancer are dependent on the frequency of exposure to and the levels of trihalomethanes in the water for drinking.” In other words, excessive exposure to chlorine, and/or the presence of organic compounds that include chlorine, could put people’s health at risk.

The poor taste of chlorine in water

There is no reason to suggest that tap water in the United States contains excessive levels of chlorine or the kind of compounds that scientists deem threatening. But many people want to reduce chlorine in their drinking water for a far less menacing reason: they don’t like the way chlorine smells or tastes.

For whatever reason you choose, the Coway Aquamega 100 triple-filtering system reduces chlorine by 99.2%. The purifier installs easily to fit on most kitchen faucets, ensuring the tap water is filtered right before you and your family consume it. All you have to do is enjoy the clean, pure water.


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.