Drinking bottled water is often associated with safety and purity. However, recent research indicates that this perception does not always match reality, as various brands contain chemical compounds derived from disinfection processes.
In this context, analyses detected dozens of substances known as disinfection byproducts, present even in waters considered safe for consumption. Although their levels were lower than those in tap water, their mere presence reignited environmental alerts.
Thus, the debate not only focuses on human health but also on the water consumption model and its ecological impact, marked by the intensive use of plastic containers.
What do studies reveal about bottled water?
The analysis included ten popular brands of bottled water, evaluated for the presence of 64 disinfection byproducts, both regulated and unregulated. All samples contained these compounds, although in varying amounts.
In general terms, the average was three types of byproducts per brand, a figure significantly lower than that usually recorded in tap water. Even so, some waters made from tap water showed higher levels.
Additionally, two commercial brands exhibited a toxicity notably higher than the rest, highlighting substantial differences within the bottled water market itself.
Health risks and regulatory gaps
The disinfection of water remains essential to prevent serious diseases. However, this same process can generate compounds associated with potential health risks, such as certain types of cancer or reproductive alterations.
Among the chemicals identified is dibromoacetonitrile, considered a possible carcinogen and currently unregulated. Although its concentrations were low, its presence raises questions about the effects of prolonged exposure.
Furthermore, many of the compounds detected are not regulated by the FDA or the United States Environmental Protection Agency, reinforcing the need for broader studies and stricter controls.
Environmental impact and comparison with tap water
From an ecological perspective, the massive consumption of bottled water implies a high environmental cost due to plastic production, transportation, and generated waste.
Additionally, various studies indicate that bottled water may contain microplastics and other contaminants, while tap water is subjected to frequent and systematic controls.
Therefore, specialists argue that, except in cases of specific contamination, tap water remains a more sustainable and safer option in general terms.
How to identify safer bottled waters for health?
For those who opt for bottled water, there are basic criteria that can reduce risks. First, it is advisable to prioritize spring waters, which usually present lower levels of disinfection byproducts.
It is also recommended to check the labeling, verify the origin of the water, and avoid those that indicate intensive purification processes without further detail.
Finally, reducing the regular consumption of bottled water, reusing containers, and promoting domestic filtration systems appear as alternatives that protect both health and the environment.
