For centuries, people have stored drinking water in copper vessels, believing that it makes the water healthier and safer. But how much of this is tradition, and how much is backed by science? Let’s explore the truth behind copper and its water-purifying abilities.
The Science Behind Copper and Water
When water is kept in a copper container, tiny copper ions slowly dissolve into the water. These ions have antimicrobial properties, meaning they can kill or stop the growth of harmful microorganisms. This process, called oligodynamic action, has been studied and proven effective against bacteria such as E. coli and Salmonella. It also works on certain fungi and viruses, making the water safer to drink.
What Copper Can Do
- Reduces bacteria and other microbes in water.
Keeps water fresh for longer by slowing down microbial growth.
Adds trace amounts of copper, an essential mineral for the body in small doses.
What Copper Cannot Do?
- It does not remove chemical pollutants like pesticides or industrial waste.
It cannot filter out dirt or heavy metals.
If water is too acidic or stored for too long, it may release excess copper, which can be harmful.
How to Safely Use Copper for Water
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Store water in a clean copper vessel for 6–8 hours before drinking.
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Avoid storing acidic or salty water, as it increases copper leaching.
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Clean the vessel regularly using lemon juice or vinegar with salt to prevent tarnishing.