Is it still safe to drink bottled water that has been stored for three months?

It is not recommended to drink bottled water that has been stored for three months. Even if unopened, prolonged storage may lead to microbial growth and changes in water quality. If the bottle has already been opened, the risk of contamination increases significantly, which could negatively affect health when consumed. For daily hydration, it's important to consume fresh water regularly.

Although unopened bottled water comes in sealed packaging, fluctuations in temperature and exposure to light during storage can compromise the stability of the water quality. Some microorganisms may slowly multiply over time. After three months, the safety and purity of the water decline, making it unsuitable for drinking.

If the bottled water has been opened, contact with air allows bacteria and dust from the environment to enter the water. Additionally, if the water dispenser is not cleaned regularly, it can become a breeding ground for microorganisms. Within three months, microbial levels can exceed safe limits, potentially causing gastrointestinal discomfort such as diarrhea and abdominal pain after consumption.

Store bottled water in a cool, dark place away from direct sunlight and high temperatures. Once opened, it is best to finish the water within 15–30 days. Always cover the water dispenser with its dust-proof lid immediately after each use. For daily hydration, adults should aim to drink 1,500–2,000 milliliters of water per day.