This new research advance knowledge and tarnish our misconception of sterile tap water, free of all micro-organism by chlorine. "If we did the same research in water bottles, we would surely find too," says Michael DuBow, professor at the University Paris-Sud, who led the work. And water in all faucets of France and Navarre, although it is likely that fewer bacteria in the water of aquifers than in surface waters.
The water tested by the laboratory of the University Paris-Sud was taken to Orly, Ivry-sur-Seine Joinville-le-Pont. These three areas are fed by the Seine and the Marne. "We found in the water two or three major groups of bacteria that were not known before," said Michael DuBow.
Bacteria
This finding does however raise a portion of the veil. "The problem in fact recognizes the researcher is that we do not know if they are alive or dead. "The new aircraft sequencing luminescence (pyrosequencing) are high-performance they are capable of reading more than 500 000 genetic sequences in ten hours. The analysis is billed. But as it is not yet grown in the laboratory most bacteria which genes belong, we know almost nothing about them. We did an inventory, but it is considerable.
"The water in the Paris area is safe. There is enough chlorine and microbiological monitoring, "insists Michael DuBow. Still, tap water is an ecosystem in its own right, even if for acne it is low in nutrients, bacteria that have colonized the Earth 3.7 billion years to get their money. "They have little snacks, but just a carbon particle is deposited within a pipe, they aggregate and feed on them around," says the researcher. Resistant to chlorine, some species can form what are called biofilms, bacteria death is a source of food for others.
The water tested by the laboratory of the University Paris-Sud was taken to Orly, Ivry-sur-Seine Joinville-le-Pont. These three areas are fed by the Seine and the Marne. "We found in the water two or three major groups of bacteria that were not known before," said Michael DuBow.
Bacteria
This finding does however raise a portion of the veil. "The problem in fact recognizes the researcher is that we do not know if they are alive or dead. "The new aircraft sequencing luminescence (pyrosequencing) are high-performance they are capable of reading more than 500 000 genetic sequences in ten hours. The analysis is billed. But as it is not yet grown in the laboratory most bacteria which genes belong, we know almost nothing about them. We did an inventory, but it is considerable.
"The water in the Paris area is safe. There is enough chlorine and microbiological monitoring, "insists Michael DuBow. Still, tap water is an ecosystem in its own right, even if for acne it is low in nutrients, bacteria that have colonized the Earth 3.7 billion years to get their money. "They have little snacks, but just a carbon particle is deposited within a pipe, they aggregate and feed on them around," says the researcher. Resistant to chlorine, some species can form what are called biofilms, bacteria death is a source of food for others.
