Preservatives are commonly used in bottled water to ensure its safety and extend its shelf life. In Australia, the use of preservatives in bottled water is regulated by the Australian Government's Food Standards Australia New Zealand (FSANZ). This agency sets standards for the composition, labelling and safety of food, including bottled water, in Australia and New Zealand.
One of the most common preservatives used in bottled water is chlorine. Chlorine is used to kill bacteria and other microorganisms that can cause spoilage and foodborne illness. In the case of bottled water, chlorine is typically added in very small amounts, often measured in parts per million (ppm), to ensure that the water remains safe to drink. The FSANZ sets standards for the maximum allowable levels of chlorine in bottled water, which are based on scientific research and risk assessments.
Another preservative used in bottled water is ozone. Ozone is a highly reactive form of oxygen that is used to kill bacteria and other microorganisms in the water. Ozone is often preferred over chlorine because it breaks down into oxygen and does not leave any residual taste or odor in the water. However, the use of ozone in bottled water is still regulated by FSANZ, and the maximum allowable levels are based on scientific research and risk assessments.
Some bottled water companies also use a combination of preservatives, such as chlorine and ozone, to ensure the safety of their product. These companies may also use additional methods, such as filtration and UV light, to further purify the water and eliminate any harmful contaminants.
It's important to note that not all bottled water in Australia contains preservatives. Some companies produce "spring water" or "mineral water", which is sourced from natural springs or wells and is not treated with preservatives. This type of bottled water is often marketed as being pure and natural, and is popular among consumers who are concerned about the safety and quality of their drinking water.
In conclusion, the use of preservatives in bottled water is regulated by FSANZ in Australia to ensure the safety and quality of this product. Chlorine and ozone are the most common preservatives used in bottled water, and their use is based on scientific research and risk assessments. Some bottled water companies also use a combination of preservatives and other methods to purify their water, while others produce "spring water" or "mineral water" that is not treated with preservatives. Regardless of the type of bottled water you choose, it's important to always read the label and check for any warnings or alerts, especially if you have any allergies or health concerns.
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