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The secret to great coffee? Pure water.

It’s hard to imagine today, but twenty years ago, it wasn’t easy to find a great cup of coffee. In 1999, only nine percent of adults in the United States drank specialty coffee on a daily basis. But take a caffeinated leap to 2017, and the number of specialty coffee drinkers more than quadrupled to 41 percent daily. Americans have become high-quality coffee connoisseurs.

During this coffee craze, a lot of attention has been given to the quality of coffee beans. But to focus on the beans neglects an important fact: over 98 percent of coffee is water.


Poor water creates poor coffee

The leading newspaper for the coffee industry, Perfect Daily Grind, states that “poor-quality water can turn your beverage into a flat, bitter or vinegary experience.” No one wants this—especially when consumers are willing to pay up to $25 per pound for coffee beans. Thus, to pour a delicious cup of coffee every morning, it’s essential to ensure the purity of the water, too.


Activated carbon filtration is key

The experts at the Paulig Barista Institute highlight activated carbon filtration, as used in the Coway Aquamega 100, to achieve excellent water quality. They note that brewers want to reduce contaminants from every step of the water supply process, including potential substances in the water’s source, treatment process and transportation infrastructure. The Coway Aquamega filters water as it leaves the tap, so it reduces contaminants by up to 99.9 percent, as certified by the WQA, at the last possible point before consumption.


Not all water created equal

Another group, the Specialty Coffee Association, has issued a long list of standards for every aspect of coffee, including water quality. They emphasize to coffee lovers that “not all water is created equal.” For starters, brewers want to use water that is free of odors, cloudiness and chlorine. Indeed, contaminants in the water can “easily influence the taste of the coffee in the cup and have characteristic off-flavors and aromas.” 

In the words of the Paulig Barista Institute, “It is good to remember that fresh, cold water is always the best starting point for brewing coffee.” For coffee lovers everywhere, triple-filtered water from the Coway Aquamega 100 is the perfect way to begin every cup.


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.