While bottled water is often perceived as a “healthier” alternative to tap water, recent analyses reveal a much more concerning reality. According to the report from the Pesticide Action Network Europe (PAN Europe), several European mineral waters contain alarming levels of TFA (trifluoroacetic acid), a molecule resulting from the degradation of certain pesticides and a persistent pollutant belonging to the PFAS family.
The figures are telling:
- Out of 19 samples of mineral waters tested in seven countries, 10 contain traces of TFA (study from December 3, 2024 – summary and source below (link to the bottom of the article).
- Some waters show TFA levels up to 32 times higher than the regulatory limit applied to drinking water.
- Analyses conducted by the Générations Futures association (summary and source below (link to the bottom of the article) reveal that 63% of mineral waters contain TFA.
Villers water, in Belgium, for example, reaches a record level of 3.4 µg/L, which is 34 times the standard. Yet, this water comes from sources supposedly protected against contaminants. This paradox highlights the inability of groundwater to escape diffuse pollution, particularly from PFAS, these “forever pollutants” that persist in the environment for decades.
Tap water: a better alternative despite challenges
Contrary to some misconceptions, tap water remains one of the most monitored foods in France. Current treatment systems manage to eliminate many contaminants such as bacteria, pesticides, and heavy metals. However, PFAS and, in particular, TFA, often escape these conventional treatments.
Concerning findings about tap water:
- In Paris, the TFA content reaches 2.1 µg/L, which is 20 times the quality limit.
- Although TFA is not yet systematically monitored, Regional Health Agencies (ARS) will have to include 20 PFAS in their analyses by 2026.
According to Julie Mendret, a researcher specializing in water treatment at the University of Montpellier, tap water contains fewer microplastics than bottled water. Additionally, a large portion of the pesticides present in our environment comes from other sources, such as food.
Why prefer tap water?
- Increased monitoring: Drinking water is subject to regular and public analyses, available from the ARS.
- Fewer microplastics: Unlike bottled water, which contains up to 240,000 plastic particles per liter, tap water is not stored in plastic containers.
- Economic and ecological impact: Bottled water costs on average 150 to 200 times more than tap water and generates a significant amount of plastic waste.
Complementary solutions: domestic filtration
Despite increased monitoring, the complete removal of PFAS, including TFA, requires advanced technologies. It is in this context that innovative solutions like the Opropre Turquoise filter stand out.
This system, developed by LAVIE, combines a high-quality activated carbon and a specific resin targeting PFAS. It effectively eliminates forever pollutants, heavy metals, as well as microplastics present in tap water.
The Opropre Turquoise system in a few points:
- Removal of PFAS and TFA (as well as heavy metals, pesticides, and microplastics) thanks to a high-performance resin.
- Ecological: returnable and recyclable cartridge.
- Easy to install: integrates directly under the sink for purified water daily.
A synergy with LAVIE water purifiers
For pure water at all levels, the Opropre Turquoise system can be combined with the LAVIE water purifiers. While LAVIE purifiers focus on removing chlorine, bacteria, and organic compounds, the Opropre filter acts upstream to block PFAS and other resistant contaminants.
This dual approach ensures water of exceptional purity, free from chemical, organic, and plastic pollutants, while preserving essential minerals such as calcium and magnesium.
To go further: Summary table of the specifics of each LAVIE technology
Conclusion: Which water to choose?
If bottled water proves far from pure, tap water remains a healthier, more economical, and ecological alternative. However, to address the challenges posed by PFAS and other persistent contaminants, domestic solutions such as the Opropre Turquoise filter combined with LAVIE‘s UV-A purification technology offer a comprehensive response for pure and healthy water at home.
Key figures from the PAN Europe study on TFA
- 10 out of 19 samples of mineral waters tested in 7 European countries contain traces of TFA.
- The concentrations detected range from 50 nanograms per liter (ng/L), the limit of quantification, up to 3,200 ng/L.
- This figure of 3,200 ng/L represents 32 times the regulatory limit set at 0.1 µg/L (100 ng/L) for relevant metabolites in drinking water.
These results illustrate the worrying presence of TFA, even in waters that are supposed to be protected and “pure”.
Summary of key data from the Générations Futures report on TFA
- Widespread presence of TFA:
– 63% of bottled mineral and spring waters contain TFA.
– 34 out of 36 samples of tap water tested in Europe contain TFA (94%). - Contamination levels:
– The concentrations of TFA in tap water range between < 20 ng/L (not detectable) and 4,100 ng/L, with an average of 740 ng/L.
– The concentrations of TFA in mineral waters range between < 20 ng/L (not detectable) and 3,200 ng/L, with an average of 278 ng/L. - Indicative limits and legislation:
– The limit recommended by the Dutch RIVM Institute for TFA in drinking water is 2,200 ng/L.
– By 2026, a limit of 500 ng/L for all PFAS will come into effect in the European Union, but the inclusion of TFA remains uncertain. - Main source of pollution:
– PFAS pesticides are identified as the main cause of water contamination by TFA, followed by fluorinated gases, wastewater treatment, and industrial activities. - Health risks:
– Although current levels appear to be within provisional safety limits, toxicological data on TFA is limited.
– Some studies show effects similar to other better-known PFAS, including liver damage and congenital malformations at high concentrations.
These results demonstrate the widespread presence of TFA in waters consumed in Europe and highlight the urgency of establishing specific quality standards to protect public health and prevent further contamination.
