ARE WATER BOTTLES HYGIENIC?

Bacteria and Water Bottles: The Science

A study conducted by Water Filter Guru swabbed various types of reusable bottles and found that they can harbour over 40,000 CFUs (colony-forming units) of bacteria per square centimetre. That’s more than what you’d find on pet bowls and even toilet seats! This level of contamination occurs because bacteria thrive in warm, moist environments like the inside of a water bottle, especially if it's left unwashed or only rinsed with water.

Bacteria such as Staphylococcus aureus and E. coli are commonly found in water bottles, both of which can cause wellness problems ranging from skin infections to food poisoning. Thus, understanding how different materials interact with bacteria is crucial for selecting the most hygienic option.

Water Bottles by Material: Plastic, Stainless Steel, and Glass

• Plastic Water Bottles: Although plastic bottles are lightweight and easy to carry, they are notorious for accumulating bacteria. Micro-scratches from repeated use create tiny crevices where bacteria can hide, making them difficult to clean effectively. In addition, some plastics can leach harmful chemicals, such as BPA, especially when exposed to heat.
• Stainless Steel Water Bottles: Stainless steel is a popular material due to its durability and resistance to bacterial growth. However, while stainless steel itself is less porous than plastic, the lids and seals can still trap moisture, making them potential breeding grounds for bacteria.
• Glass Water Bottles: Glass is a non-porous material that resists bacterial buildup, making it a good choice for hygiene. Its downside, however, is fragility. While glass bottles are easy to clean, they’re more likely to break or chip, making them less practical for everyday use.

Why Copper Bottles are More Hygienic

Enter copper water bottles—a game changer when it comes to hygiene. Copper has long been valued for its antimicrobial properties, which can kill harmful bacteria and viruses. Several studies, including those by the University of Southampton, have shown that 99.9% of bacteria on copper surfaces are killed within two hours. This antimicrobial action extends to water stored in copper bottles as well, making them an ideal solution for those looking for a more hygienic option.

When water is stored in a copper bottle, trace amounts of copper ions dissolve into the water, naturally purifying it. This process can neutralize many of the harmful bacteria found in water, including pathogens like E. coli and Klebsiella pneumoniae. Ayurveda, an ancient Indian practice, has long advocated drinking water stored in copper vessels for its wellness benefits, which include balancing the body’s three doshas (Vata, Pitta, and Kapha) and aiding digestion.

The Importance of High-Quality Copper

Not all copper bottles are created equal. Many cheaper versions are mixed with other metals like nickel or zinc to cut production costs, which compromises both their safety and effectiveness. According to the founders of Paani, a premium copper bottle brand, the key is using 99.9% pure copper. “We've seen the cheap production side where factories mix metals to cheapen costs, which diminishes the bottle's wellness benefits,” they explain.

With a pure copper bottle, like Paani’s, you ensure that the water retains its antibacterial properties and stays free from contamination. However, it’s essential to clean copper bottles regularly to prevent the buildup of patina, a green layer of oxidation that occurs naturally over time. Cleaning can easily be done with natural agents like lemon/distilled vinegar/citric acid and sea salt.

Maintaining Your Copper Bottle

To ensure your copper bottle remains as hygienic as possible, it's important to perform a deep clean weekly. This prevents oxidation and keeps your water fresh. Unlike other bottles, where bacteria can grow unchecked, the copper in these vessels keeps bacteria levels low while you stay hydrated.

Conclusion: Copper as a Hygienic Choice

In conclusion, while all water bottles require regular cleaning to prevent bacterial buildup, copper bottles stand out for their natural antimicrobial properties. Whether you’re looking to improve your hydration routine or simply want a bottle that stays cleaner for longer, copper is an excellent choice. However, make sure you choose a high-quality, pure copper bottle, like Paani, to ensure you’re getting the maximum benefits. With its ability to naturally kill bacteria and its long-standing use in ancient wellness practices, copper is the hygienic, sustainable option for your daily hydration needs.