Copper, silver or brass: Which metal glass is actually healthier to drink from?

For centuries, Indian households have used metal vessels for water and food, and today we see many people follow this trend, including Kangana Ranaut and Tanya Mittal. Ayurveda believed metals don’t just hold water; they energise it. Modern science now partially backs the claim that certain metals can change the water’s pH, add trace minerals, and even control microbial growth. But when it comes to your daily glass, which one deserves a place on your dining table: copper, silver, or brass?

Copper has long been praised for its purifying power. When water rests in a copper glass for a few hours, trace amounts of copper ions mix into it, according to a study published in Biomedicine. This process is called oligodynamic effect, and it helps kill harmful bacteria naturally.

Drinking this water can support digestion, balance thyroid function, and detoxify the liver. Some studies even suggest copper may help regulate melanin production, improving skin tone and preventing premature greying.
However, moderation is key. Overexposure to copper can cause nausea or fatigue, as per NIH. Using a copper glass once or twice a day, especially early morning, is generally considered safe and beneficial.

Silver, known for its cooling and antimicrobial qualities, has been used for centuries to store water and medicines. Research from the NIH shows that silver ions can inhibit bacterial growth and support immunity.

Water stored in a silver glass feels subtly cool and refreshing, making it ideal for hot climates. It also helps regulate body temperature and may assist in reducing inflammation.

In many traditional households, silver glasses were used for infants or the sick, as they were believed to prevent infections. Though silver is expensive, it’s a great occasional choice for boosting overall wellness.

Brass, an alloy of copper and zinc, brings the best of both worlds. Zinc helps in cell repair, strengthens metabolism, and supports healthy hair and skin. Together, copper and zinc in brass can add a small but useful dose of minerals to your water (study on how brass is used in healthcare).

Brass glasses are particularly good for people prone to sluggish metabolism or dull skin. But remember, brass must be cleaned properly. Acidic drinks or lemon water should never be stored in it, as the acid can react with the metal.

Clay glasses may not be metal, but they deserve mention. They keep water cool naturally without electricity and help maintain a slightly alkaline pH, which can balance acidity in the body.

Clay also infuses the water with trace minerals like magnesium and calcium. Its earthy aroma adds a nostalgic touch that modern glass or plastic simply can’t match. The only downside: they are fragile and need frequent replacement.

Stainless steel may lack the traditional charm, but it wins on practicality. It’s durable, rust-free, non-reactive, and completely safe for all types of drinks.

Unlike copper or brass, it doesn’t alter the water’s properties, making it ideal for daily, all-day use. Steel glasses also require the least maintenance, which explains why they’re the go-to choice in most modern kitchens.

For everyday use, steel is the safest bet. For occasional wellness rituals, copper or brass can be added to your routine, provided they’re cleaned properly. And if you want a refreshing summer sip, silver or clay glasses make beautiful seasonal companions.

This article is for informational purposes only. Metal glasses can complement a healthy lifestyle but are not substitutes for medical treatment. Always consult a qualified healthcare expert before making significant changes to your health routine.