Meet Coin of Harmony, the Latest Sustainable Innovation to Help Keep Your Drinking Water Clean

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This story was created by Men’s Journal in partnership with Coin of Harmony.

The internet is filled with products marketed to make your life easier, safer, and healthier — whether it’s a new skincare device built to reduce wrinkles or a kitchen accessory that you hope will help you up your intake of vegetables. If you’ve ever purchased something like this, there’s a very good chance you’ve used it once or twice, and it now languishes away in your cabinets.

The Coin of Harmony, however, might be different. Developed with the goal of purifying water, the compact coin (it fits in most water bottles) is made of silver and copper and is incredibly easy to use. If you didn't know already, both silver and copper have antimicrobial properties that, when released into water, can help attack bacteria and viruses. That's why both materials have historically been used as a way to very simply keep water clean and safe to drink. 

Coin of Harmony Water Purifying Coin, $40 at ShopHQ

Take pioneers on the American frontier, for example. They were known to place silver or copper coins in their water barrels to ensure the contents remained drinkable. Utensils eventually became made of silver as opposed to dangerous lead. NASA has even researched silver as an antimicrobial agent, and those findings then informed ways the technology can be used commercially (in pools, hospitals, in-home water filters, etc). Now, there’s the Coin of Harmony.

Here’s how it works. All you have to do is place a singular coin in any water container (like that water bottle that sits by your desk every day, the water vessel in your refrigerator, or your hiking backpack that could use a good cleaning), fill it up, and give it a few shakes. After that, the water is said to have gone through an effortless, natural purification process. The coin can then be left in the bottle for the following refills.

Though Coin of Harmony couldn’t be easier to use, the company does warn that it has the potential to be swallowed, so it’s best to keep it out of reach of smaller children or anyone else who may be at risk. It also shares that while the coin is built to last for years, repeated use may result in the Coin of Harmony turning a bit darker on the copper side (the patina process) and slightly foggy (or tarnish) on the silver side.

If you’re interested in testing out the Coin of Harmony for yourself, you can snag one on ShopHQ. Our readers can also use the discount code HARMONY5 for $5 off their purchase.