• Home   >
  • curiosity

Stainless threat

  •  May 28, 2020


At the time of renovation, is the kitchen sink chosen stainless steel? Better change. New study reveals how the imagined safest material actually stimulates the proliferation of bacteria.

Read more:

Killing the chance to lose weight - Evolution is shrinking the microbiome
The Health Choice - Find Out Which Airplane Seat Is Safer

Rust particles in the water system stimulate bacteria growth Legionella pneumophila.


These bacteria cause a disease called legionellosis.

Its symptoms are headaches, muscle pain, fever, disorientation and other mental problems.

Patients with legionellosis often need to be hospitalized.


This is because the mortality rate ranges from 5% to 30%.

And where the risk is least expected to come from is exposing more people.

According to a new study, the coating on stainless steel fittings may degrade over time.


This can encourage the growth of species of Legionella.

The research was done by the University of Pittsburgh (United States).

In it, scientists tested three common models used in residential installations.

Researchers tested stainless steel, ceramic brass and bronze thermostatic taps.

Each with clean water and water contaminated with Legionella, or with rust and the microbe.

The parts were monitored for three years.

As a result, when rust was combined with Legionella On the stainless steel tap, half of the water samples became infected.

The theory is that the finish of stainless steel faucets will degrade if rust particles are present in the water.

In the third year of testing, the concentration of bacteria on this tap skyrocketed.

In contrast, the brass mixer tap was the safest, even with rust present.

Scientists opined that taps for sale should be explicitly tested to assess the risk of bacteria.

The alert is important.

After all, the material is currently a favorite for equipping kitchen and bathroom sinks.

In Brazil there are no clear epidemiological data.

But the condition is on the rise in Europe, as the website New scientist.

In 2015 there were 7,000 known cases and there may be many more that were not reported.

But does that mean giving up the material?

Not quite.

The important thing now is to know that the system is not eternal and risk free.

M2TW - Stainless Steel v6.4 [Ep. 3] "Scotland's a threat..." (May 2020)


Recommended