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Copper and Coronavirus: Complete Guide (Updated Sept. 2020)

Copper and Coronavirus: Complete Guide (Updated Sept. 2020)

**This post was first published on March 11, 2020 and last updated on September 12, 2020 at 8:45pm PDT. It will be updated as more science and research on the coronavirus (COVID-19) becomes available.**

Research has shown that copper has anti-bacterial and anti-viral properties which make it a potential tool in the fight against the coronavirus (COVID-19). In this post, we comprehensively discuss all available research and studies. We also explain why copper is an ideal material for reusable water bottles and preferable to water bottles made from plastic or other materials.

General Research and Studies

The effect of copper on bacteria and viruses has recently been the subject of a number of articles, including in Fast Company, Dwell, ViceClevelandSmithsonian, and The New York Times. These articles are all in reaction to a number of recent studies which have explored the capability of copper to kill the coronavirus. The Washington Examiner also recently published an opinion piece from a well-known professor of economics who persuasively made the case for greater use of copper to help slow the spread of future pandemics.

The anti-bacteria and anti-viral nature of copper was discovered long before the outbreak of the coronavirus. It was discovered centuries ago by ancient civilizations which led to the use of copper in various health applications, including in water vessels to purify drinking water. In modern times, copper has been the subject of numerous studies by the scientific community as well as attention from the World Health Organization.

In one recent study, which was published in the Journal of Health, Population and Nutrition, scientists studied the effect of storing water in a copper pot on microbially-contaminated drinking water, including harmful bacteria such as e. colisalmonella typhi and vibrio cholerae. In particular, scientists stored water contaminated with this bacteria in copper pots for 16 hours at room temperature. The bacteria was no longer recoverable when the researchers examined it, which was an incredible result compared to water stored in control glass bottles under the same environment (in which the bacteria continued to grow and flourish). The bacterial situation was even worse in reusable plastic bottles.

In another recent study, scientists again studied the effect of storing water in a copper pot on water contaminated with bacteria. In this study, the scientists incubated water with a colony of harmful bacteria and then stored the water overnight at room temperature in both copper pots and glass bottles. In the morning, the bacteria was no longer recoverable from the water that had been stored in the copper pots, although it was recovered from the water stored in the glass bottles. 

In yet another recent study, researchers stored water contaminated with bacteria in a variety of different water containers, including copper and silver containers, in order to determine their efficacy at removing biological contamination from drinking water. The study revealed that the copper vessels had a significant inhibitory effect on the bacteria in the water after only a few hours of exposure. 

In addition, in 2008 the United States Environmental Protection Agency published a study showing that copper surfaces are proven to continuously reduce bacterial contamination and provide continuous antimicrobial action even with repeated exposures. The study also found that copper surfaces continuously kill over 90% of bacteria after repeated exposures during a day, prevent the buildup of disease-causing bacteria, and deliver continuous, long-lasting antibacterial activity.

These and other similar studies confirm long-standing anecdotal evidence linking exposure to copper with resistance to infection. The first recorded medical use of copper appears in the Smith Papyrus, written between 2600 and 2200 B.C. This ancient text said that copper could be used to sterilize wounds and drinking water. In addition, it has been said that ancient civilizations in Egypt and Babylon observed that soldiers found scraping their bronze (an alloy of copper and tin) swords into wounds would tend to be more resistant to infection. In addition, storing water in copper vessels has long been utilized as a practice in India to eliminate microbes from drinking water.

More recently, in the 19th century, during an epidemic of cholera (a bacterial disease) which was spreading through France, a French doctor noticed that laborers at a copper smelter in Paris were not becoming infected with cholera. He observed that the same was true of other people in the city that worked with copper, including jewelers, goldsmiths and boiler makers. That epidemic ended up killing more than 6,000 people out of a population of approximately 1.6 million, reflecting a ratio of approximately 0.4 percent. However, only 45 of the people that worked closely with copper died, representing a ratio of only 0.05 percent.

Research and Studies Specific to the Coronavirus

In addition to the above-noted research, there have also been studies on the effect of copper specifically in respect of the coronavirus.

The first notable study in that regard, published by the Centre for Biological Sciences at the University of Southampton in the United Kingdom, focused on coronavirus 229E (HuCoV-229E). The study found that the virus persisted in an infectious state on common surface materials for several days. However, when the surface material contained copper, the scientists observed rapid inaction of the coronarvirus.

In particular, scientists found that the coronavirus was rapidly inactivated on copper surfaces, with the inactivation rate being roughly proportional to the percentage of copper in the metal surface. In particular, metal alloys containing 90% copper were found to inactivate the virus in 30 minutes or less. The researchers provided the following chart to summarize the impact on the coronavirus by reference to the percentage of copper in the metal surface ("Cu" refers to copper content). The vertical axis represents the amount of virus left on the copper surface:

copper and coronavirus

The researchers concluded that copper surfaces could be employed in communal areas and at any mass gatherings to help reduce transmission of respiratory viruses from contaminated surfaces and protect the public health.

More recently, on March 17, 2020, a new study was released concerning COVID-19 by the National Institutes of Health, CDC, UCLA and Princeton University scientists in The New England Journal of Medicine. The scientists examined the length of time for which specifically COVID-19 could survive on various materials, including aerosols (air), cardboard, plastic, stainless steel and copper. The study concluded that while the coronavirus could survive for up to two to three days on plastic and stainless steel and up to 24 hours on cardboard, it could only survive for up to four hours on copper. This study further confirms the anti-viral nature of copper.

The results of this study can be simplified as follows:

copper and coronavirus

This study has also received attention from The Economist, which published the following helpful summary chart comparing (in a more complex manner) the longevity of the coronavirus on copper as compared to the other materials:

copper and coronavirus

In another study, it was determined that copper can help prevent respiratory viruses, such as the coronavirus, from spreading. In that study, scientists found that the coronavirus was rapidly inactivated within a few minutes by copper surfaces.

Given this research, one may wonder why copper is not more actively used for surfaces in public places, including hospitals. In fact, in one study, scientists concluded that the use of copper surfaces could reduce bacterial and viral infection rates in hospitals by 58 percent. Although most hospitals have not yet adopted this approach, it appears to have significant potential. The following photograph of an intensive care unit in a hospital, care of the Medical University of South Carolina, illustrates the locations in which copper could be used as a surface in a hospital to minimize the spread of infections:

copper and coronavirus

This body of research has recently inspired health sciences researchers at the University of Arizona to study whether or not certain copper-based chemical compounds could potentially stop the virus that causes COVID-19.

How Does Copper Kill Bacteria and Viruses?

The special effects of copper can best be analyzed through the lens of both chemistry and biology. When bacteria or viruses come into contact with copper, they absorb copper ions, which are essentially electrically charged particles.

These copper ions, through a process known as the oligodynamic effect, essentially punch holes into the membranes (walls) of the bacteria and viruses. Once the membrane is damaged, the copper ions move inside and destroy the DNA and RNA, preventing the bacteria and viruses from further multiplying. Interestingly, bacteria have both DNA and RNA while viruses have only RNA. However, notwithstanding that difference, the effect of the copper ions is essentially the same. 

copper and covid-19

The following diagram, courtesy of the American Society of Microbiology, offers a more detailed depiction of this process. Portion "A" of the diagram depicts copper dissolving from the copper surface and copper ions causing damage to the membrane of the bacteria/virus. Portion "B" depicts the membrane rupturing as a result of the copper ions, causing damage to the bacteria/virus. Portion "C" depicts the copper ions inducing the creation of reactive oxygen which may cause further damage to the membrane. Portion "D" depicts the DNA/RNA within the membrane becoming damaged and inactivated.

copper and coronavirus

In one leading study, cells of e. coli were exposed for 1 minute to a copper surface, a normal non-copper surface, and a stainless steel surface. The study showed that cells exposed to the copper surface suffered membrane damage and quickly became immobilized. The following microscopic images from the study show the result. Live bacteria with intact membranes are green, while those with damaged membranes are red:

copper and coronavirus

Business and Government Start Considering Greater Use of Copper

As discussed in Forbes, this compelling research on the anti-bacterial and anti-viral properties of copper has led the medical industry to rush to create and manufacture specialized face masks made with copper. Because of the presence of copper in these masks, they are naturally anti-viral and self-sterilizing, which will hopefully help medical professionals re-use the masks for multiple patients. This may help address shortages of personal protective equipment (PPE). In addition, engineers have developed a process which is capable of spraying a thin layer of copper on door-handles and doorknobs. 

Other recent investigations prompted by COVID-19 have also demonstrated that the speed of copper's anti-bacterial and anti-viral effects can be accelerated if the copper is shaped in a way that maximizes the surface area of copper which makes contact with the bacteria or virus. It is for this reason that some businesses have started producing copper designed with a hammered or otherwise uneven texture to maximum surface area.

In addition, some governments have begun to consider the possibility of using copper in public areas in order to minimize the spread of infections. For example, a New York State Assemblywoman recently introduced a bill that would require publicly funded construction projects to use copper. The bill would require all new construction projects receiving state funding to use copper alloy touch surfaces – including door handles, bathroom fixtures, bed rails and handrails. It has been said that the legislation would reduce the spread of infection and help boost the local economy by investing in locally made materials.

The Problem with Normal Reusable Water Bottles

As research studies have shown, ordinary reusable water bottles can become environments that are prone to cultivating harmful bacteria and viruses.

As we use our water bottles throughout the day, they repeatedly come into contact with our hands, and thereby become covered in bacteria and potentially viruses. While the same is true of many other things (such as our smartphones), water bottles are more problematic because we put them to our mouths and drink from them. While it may be difficult to think about, the reality is that we put something covered in germs to our lips multiple times each day.

This problem is aggravated by the way that most reusable water bottles are designed. Often, we carry our water bottles by holding them by their caps or lids. This means that our hands come into contact with the lip of the bottle, which ends up touching our mouths when we drink from it. 

Even if our water bottles are designed differently and we wash our hands multiple times per day, droplets floating in the air containing bacteria and viruses (from other people that may have coughed or sneezed) can land on our water bottles. We can then become infected by those same bacteria and viruses when we drink from our water bottles.

In addition, there is plenty happening inside most reusable water bottles which is concerning. As studies have shown, there is a significant link between reusable water bottles and the growth of bacteria colonies. In short, since the nature and function of reusable water bottles involves moisture, they become breeding grounds for bacteria and viruses.

This problem can be further aggravated by the way that we refill our water bottles. For example, if we use a water dispenser or water fountain at the workplace, gym or in an airport, there is a very good chance that bacteria or viruses left by someone else who used that water dispenser or water fountain before us will find their way into our water bottle, contaminating the bottle and the water in it.

The Solution: Anti-Bacterial Copper Water Bottles

Mother nature has fortunately provided a solution in the form of copper. As demonstrated by various research studies, copper naturally and safely kills bacteria and viruses through a natural process. As mentioned above, copper has been used for thousands of years to sterilize contaminated water naturally and safely. 

What does this all mean for the coronavirus outbreak? It means that anytime you touch your copper water bottle, you can have confidence that any bacteria or viruses on the copper surface have already been destroyed or are currently under attack by copper ions. It also means that any bacteria or viruses present in your water bottle will be destroyed by virtue of the copper material from which the water bottle is made. It also means that your water bottle is naturally self-sterilizing, meaning you can put your mind at ease and not worry that your water bottle is becoming a risky bacteria and virus trap.

Copper H2O is the global market leader and original provider of the highest quality, 100% pure copper water bottles. All of our copper bottles ship within 1 business day from our warehouse in California, USA, and our processing times are unaffected and secure from the pandemic outbreak. Protect your health by ordering today and we will also donate 15% of the profits to charities supporting coronavirus relief efforts.

Click here to purchase a copper water bottle

Or, click here to purchase a copper water pitcher or a copper cup from our sister company, Shantiva.

Of course, as the The New York Times quite properly observes, copper is not a complete solution. Drinking from a copper water vessel doesn't replace healthy hygiene practices, self-isolating and social distancing in the prevention of coronavirus. Make sure to wash your hands frequently throughout the day with soap and water for 20 seconds and self-isolate where possible.

Let's support our good health together and flatten the curve! If you have any questions, please email us anytime at or comment below.

About the Authors: This article was collaboratively written by our team of researchers and writers with the benefit of all available scientific studies and other relevant literature. Our team of researchers and writers include experienced health researchers including a qualified medical professional. Please note that information in this article is not intended or implied to be a substitute for professional medical advice, diagnosis or treatment.


Mar 19, 2020 • Posted by Copper H2O

Hi R.W., thanks for your comment and for sharing that article! Yes, there has been a lot of recent interest in copper as a medium to help fight the coronavirus. Hope you are staying healthy and keeping safe!

Mar 19, 2020 • Posted by R.W.

Dwell did an article on copper and coronavirus too:

Mar 17, 2020 • Posted by Copper H2O

Hi Rachel, thanks for your message and your order today! We will be fulfilling and shipping your order first thing tomorrow. We are dealing with greater than usual volume at the moment but our warehouse staff are working hard and shipping within 1 business day, and often same day. Please let us know if you have any other questions!

Mar 17, 2020 • Posted by Rachel R.

Hi, I just purchased three of your bottles after reading this. How long will they take to receive? Thanks.

Mar 16, 2020 • Posted by Copper H2O

Hi John, thanks so much for your comment! Glad to hear your order arrived so quickly and that you and your family had a chance to use your new copper bottles over the weekend. We hope you enjoy them and stay safe!

Mar 16, 2020 • Posted by John

Thank you for this. We just received our bottles on Friday and have been using them all weekend. Every little bit of extra precaution helps at this point—so glad to have these!

Mar 15, 2020 • Posted by Copper H2O

Hi Tracy, thanks very much for your comment and your order! Our fulfillment staff, who are based in California, were getting orders ready for fulfillment today (Sunday), so your order should be shipping out first thing tomorrow (Monday). We hope you and your family enjoy your copper bottles. Stay safe!

Mar 15, 2020 • Posted by Tracy Beckman

I am so glad I read this. I was planning to go to Costco to buy a few cases of bottled water, but this is a much more sensible, environmental and cost effective way to ensure safe drinking water. I just bought 6 of your hammered copper water bottles for the entire family.

Mar 15, 2020 • Posted by Copper H2O

Hi Judith, thanks very much for your question! The special effects of copper can best be analyzed through the lens of both chemistry and biology. In particular, all bacteria and virus are living cells. If those cells can be disrupted and killed, the bacteria and viruses can be destroyed. When bacteria or viruses come into contact with copper, they absorb copper ions, which are essentially electrically charged particles. These copper ions, through a process known as the olgiodynamic effect, prevent a process called cell respiration in the bacteria and viruses. In basic terms, this results in the copper ions punching holes into the cell membranes (walls) of the bacteria and viruses. Once the cell membrane is damaged, the copper ions move inside the cell and destroy the DNA and RNA inside, preventing the bacteria and viruses from further multiplying. It is an incredible process, made all the more incredible by the fact that it is completely natural. We hope that answers your question!

Mar 15, 2020 • Posted by Judith Jamison

Reading about your copper bottle ability to ward off both bacterial & viral invasion, has your knowledge of chemistry given you a deeper enlightenment as to what copper does to extinguish such invasions?

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