The filter jugs allow some contaminants to pass through. Their health effects are uncertain.
One in five French people have a filter jug. Supposed to improve the taste of water, reduce the lime content, they do not make the water sterile. After several reports of undesirable substances, theNational health security agency (ANSES) looked at the effectiveness of these devices. The conclusion is mixed but is reassuring.
The analysis confirms it: filter jugs are capable of releasing various contaminants, such as sodium, potassium or ammonium. But on these three elements, ANSES does not conclude that there is a risk to the health of consumers. In fact, the thresholds noted are not associated with harmful effects for humans.
The Agency regrets, on the other hand, that no dosage has been carried out according to international recommendations. Moreover, the scientific data is not certain.
Too little data
The conclusions are firmer concerning the silver ions, found in the filtered water. The concentrations do not exceed the value set by the World Health Organization (WHO) of 100 micrograms per liter.
On the other pitfalls highlighted by various media, ANSES is cautious. Filter jugs have a tendency to modify the pH of the water. But it is not possible to conclude that there is a direct effect on health. This lack of data leads the Agency to demand more precise protocols and an improvement in the level of knowledge.
No direct effect, therefore, but an indirect impact can emerge, through metallic materials in contact with water. They would be likely to release metals. This is why it is important to comply with the regulations relating to materials in contact with food, according to ANSES. The goal is clear: these should not be in the drinking water.
Clean well
“The data currently available do not highlight a risk to the health of the consumer”, slices the report. While it is difficult to conclude that filtered water has an impact on human health, ANSES recommends that consumers follow the instructions to the letter. Starting with the regular cleaning of the container and an equally frequent replacement of the cartridges. Water should also be stored in the refrigerator, and ideally consumed within 24 hours.
Microorganisms and various bacteria can indeed thrive in filtered water – as in any water. Good news, however: the various analyzes do not bear witness to faecal contamination. Last, and not the least, the liquid must be drinkable before it is filtered. A useful clarification because filter jugs are not a miracle product.
.
