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Diseases caused by polluted waters

Water is one of our most precious assets and constitutes an essential contribution to people’s lives and health. However, the water must be in good condition to be consumed, because in those cases in which the water is contaminated, it can give rise to very different diseases that, in general, are of a serious nature, and that occur through various routes of transmission (not just by drinking contaminated water).

Thus, taking care of our water heritage is a fundamental task for our health and our ecosystems. We invite you to continue reading this AgroCorrn article to learn about diseases caused by contaminated water , what other associated problems there are and some of the ways to reduce this situation.

You may also be interested in: 7 natural disasters caused by man
  1. Water pollution and health
  2. Diseases caused by water pollution
  3. How to prevent diseases caused by polluted water

Water pollution and health

Although in many areas of the world we have a good network of sanitation and water channeling, this is not a reality for many people. According to data handled by the UN in 2017, up to 4.5 billion people did not have access to safely managed sanitation services and, also according to UN data, up to 340,000 children under 5 years of age die from diarrheal diseases [1 ] .

Water is a vital element for our health : it dies before of thirst than of starvation. Most of our body is water and we lose it when developing our vital functions (when breathing, through urine and excretion, when we sweat, etc.), so we must necessarily replace it.

However, water is also the main habitat for a multitude of pathogens, especially stagnant waters . Therefore, the study of water and the development and maintenance of water processing infrastructures is, therefore, of vital importance for people’s health.

Diseases caused by water pollution

Among the main diseases caused by polluted water , the following stand out:


Diarrhea can be a symptom or a disease itself, which occurs when a pathogen settles in the intestine. To eliminate pathogens, the wall of the intestine releases water; in short, it is a “wash” on the inside, which aims to drag pathogenic organisms to the outside. Thus, feces have a high water content. With diarrhea, a large amount of water is lost, so there is a risk of dehydration . Especially if clean water is not available, when we try to hydrate ourselves we will be increasing the pathogenic load, so we can enter a really harmful cycle for our health. In the most severe cases, diarrhea can lead to dehydration, be accompanied by fever, and cause bleeding.


Dysentery is a serious disease characterized by inflammation of the intestine, leading to severe mucous and bloody diarrhea. Other symptoms are abdominal pain and vomiting. It can be caused by Enterobacteriaceae of the genus Shigella or by an amoeba, Entamoeba histolytica , and in this case it is also known as hepatic amebiasis, since it mainly affects the intestines and liver. For more information about this disease, we recommend reading this article on hepatic amebiasis: symptoms, causes and treatment .


Dengue is a disease caused by a virus and transmitted by a mosquito ( Aedes aegypti) . In other words, dengue is not caused by ingesting contaminated water. However, mosquitoes tend to live in places with water and, especially, in stagnant waters, since part of their life cycle takes place there. Therefore, being near stagnant and contaminated waters greatly increases the risk of being infected with dengue by the carrier mosquito. Dengue symptoms include diarrhea, high fever, and bleeding.


Cholera is a disease caused by the bacillus Vibrio cholerae , which is found in contaminated food or water. It causes severe watery diarrhea and can be fatal within hours if not treated properly. It is estimated that annually there are between 3 and 5 million cases of cholera a year in the world. Here you can expand the information on Cholera: contagion, symptoms and treatment .

Typhoid fever

Typhoid fever is an infection caused by the bacteria Salmonella typhi , which can be fatal and is spread by contaminated food or water. The main symptoms include fever, headache, nausea, abdominal pain, and constipation or diarrhea. The greatest risk, as with other diseases, occurs in populations with high rates of poverty, and especially in vulnerable populations, such as children.


The most common way of transmission of the bacteria that causes legionellosis ( Legionella pneumonia ) is the inhalation of contaminated aerosols, produced with nebulizers or water sprays. After infection, aggressive pneumonia (lung infection) occurs, which in severe cases can lead to death.

Other diseases caused by water pollution

  • Malaria
  • typhus
  • Trachoma
  • Malaria
  • Ascariosis
  • Arsenicosis
  • Schistosomiasis
  • Ankylostomysis
  • Botulism
  • Giardiasis
  • Hepatitis
  • Campylobacteriosis
  • cryptosporiodiosis
  • Cyanobacterial toxins
  • Fluorosis
  • Leptospirosis
  • Polio
  • lymphatic filariasis
  • Malnutrition
  • Oncocercosis
  • Scabies

How to prevent diseases caused by polluted water

The best way to avoid diseases caused by contaminated water is to have a proper water sanitation network . It is necessary both to have water treatment plants that guarantee the water supply, as well as treatment plants that are capable of filtering and cleaning wastewater , as well as appropriate canalization networks. The development of these infrastructures must be accompanied by a re-education of the population in water matters. In this other AgroCorrn article you can learn the different types of wastewater treatment .

In addition, a good sanitation system can also help prevent many water-related diseases, which occur more frequently or are aggravated when you already have some other physical condition, such as malnutrition.

Lastly, and for specific cases, there are various portable water treatment mechanisms, such as water treatment tablets, which can be used occasionally in isolated regions (for example in mountainous and sparsely populated areas).

If you want to read more articles similar to Diseases caused by polluted waters , we recommend that you enter our Pollution category .

Maria Anderson

Hello, I am a blogger specialized in environmental, health and scientific dissemination issues in general. The best way to define myself as a blogger is by reading my texts, so I encourage you to do so. Above all, if you are interested in staying up to date and reflecting on these issues, both on a practical and informative level.

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