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Contaminated water: know the risks and how to prevent

22/03 day, Friday, is the World Water Day. Today we turn our attention to one of the most precious assets of our planet, its use indiscriminate and social impact that failing cause.


Second WHO report in partnership with UNICEF, about 2.1 billion people (three in ten people) have no access to clean water at home, and 4.5 billion (six out of ten people) have no access to basic sanitation .


The report, also published in 2017, presents a first analysis of the global situation of distribution of drinking water and access to sanitation worldwide. The conclusion is that many people are deprived of this essential natural right to life, especially in rural areas and more remote from major urban centers.


The result is alarming, the risk of contamination in these areas is much higher, every year more than 300,000 children under five years die due to contact with contaminated water.


contaminação bactérias água patógenos

Photo: IT / Kibaki Park


Diseases caused by ingestion of contaminated water

A maioria das doenças transmitidas pela água são causadas por microrganismos existentes em reservatórios de água doce contaminada, normalmente, por fezes humanas ou de animais. Os riscos são invisíveis, até a água mais cristalina, como na imagem acima, pode estar contaminada e oferecer sérios riscos à vida humana. Para se ter uma ideia, apenas uma grama de fezes pode conter cerca de 10 milhões de vírus, 1 milhão de bactérias ou até 1000 parasitas. Diluída em seu reservatório de água, esta ameaça é praticamente indetectável, especialmente a olho nu.


The transmission of diseases can happen in various ways, either by direct ingestion of contaminated water, the food that came in contact with unsafe water and in some cases to the contact with the skin can cause risks. Still ingestion is the most common form of contamination.


We list below some diseases caused by microorganisms present in contaminated water:


hepatitis A

Hepatitis A is a viral infection transmitted by the fecal-oral route, ie, one needs to have contact with contaminated human feces to be contaminated. Transmission of hepatitis A virus can occur through contamination of food prepared by infected persons who do not wash their hands after going to the bathroom or the water contact with contaminated feces, which occurs mainly in places where there is no basic sanitation.


Infectious diarrhea

Important cause of morbidity and mortality in Brazil and in developing countries, acute diarrhea has high incidence and the episodes are frequent in childhood, particularly in areas with poor sanitation. Several viruses, bacteria, parasites and bacteria can contaminate the water, most often the fecal-oral route, and cause very severe dehydration.



Just like diarrhea, amoebiasis is acquired by eating or drinking something contaminated with fecal material. This disease is caused by an amoeba called E. histolyticaThat enters the digestive tract as a tiny egg. The amoeba feed on mucus of intestinal wall and begin playback, spreading increasingly. The disease can be mild or extremely painful when the picture is complicated and is responsible for about 100,000 deaths worldwide.



Cholera is an infection that attacks the intestine of humans and is also transmitted by the fecal-oral route, and may be acquired by contaminated food and water. THE Vibrio cholerae, Disease-causing bacteria, settles in the intestine and starts to produce a toxin that attacks the intestinal cells, causing severe diarrhea and causing the body to eliminate a large amount of water and mineral salts, leading to severe dehydration.



It is the most widespread human intestinal parasitism in the world, caused by a parasite called Ascaris lumbricoides, popularly known as roundworm. Contamination occurs when there is ingestion of infected eggs of the parasites which may be found in soil, food or water contaminated with human feces.


How to protect themselves from the risks?

But after all, how to know if I'm safe? The first step to protect yourself is to keep good hygiene. wash hands and sanitize food. These are just some of the ways to prevent.


água filtro carvão ativado pura potável


Another important alternative you can take in your home is the use of household water filters. Conventional filters found in stores have many differences, some filter just waste / sludge and others also include the option to filter out unpleasant tastes and odors from the water. The filter elements that can reduce these undesirable effects on water and are used in household filters are basically divided into three types: activated charcoal (carbon block) ceramic candles and elements meltblow (Typically polypropylene).


However not always the filters are full safety condition. One must consider that these materials become ineffective when the porosity of the filter medium is larger than the particle size of the impurities present in the water and in addition can favor the formation of biofilms in its porosity characteristic. The conclusion: instead of the beneficial action, the filter becomes a source of contamination due to the accommodation of bacterial colonies in the filter element.


In response to this the TNS offers additives antimicrobial for the filter industry. TNS additives ensure maximum protection against harmful bacteria encountered in water. Also they can be applied from the filter element to the outside of the filter, through all the parts that come into contact with water and the handling of those who are using, ensuring maximum protection for you and your family.


A antimicrobial protection prevents new bacteria to proliferate in the filters and eliminates up to 99.9% of micro-organisms present in the water. thus ensuring greater efficiency to domestic filters in addition to maintaining their filtering properties for longer.


Want to know more about our applications and how it can be incorporated into your business? Go!


TNS Ebook Everything you need to know about Bacteria and Fungi

Sources: Terra, TNSolution e HIM-HER-IT.