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Microorganisms in water

There are several thousand names of microorganisms that live in water. These include various bacteria, fungi, and others. They are an integral part of the planet's biological diversity and perform important functions.

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There are several thousand names of microorganisms that live in water. These include various bacteria, fungi, and others. They are an integral part of the planet's biological diversity and perform important functions.

microorganisms in water

What Are The Microorganisms Found In Water?

If we try to classify water microorganisms, we can divide them into groups:

  1. Blue-green algae or cyanobacteria are an integral part of every body of water, making up 60% of all microorganisms.
  2. Pathogenic and conditionally pathogenic microorganisms: viruses, bacteria, fungi, protozoa.
  3. Relatively safe organisms that can be in water and do not cause dangerous diseases.

 
TopicDetailsExamples/Methods
Microbial Indicators in WaterIndicators that reveal the presence and levels of microorganisms in water sources.Total coliforms, fecal coliforms, E. coli, enterococci.
Human Infectious DiseasesDiseases caused by pathogens present in contaminated water.Cholera, dysentery, typhoid fever, hepatitis A.
Equipment and FiltersTools and devices used to manage and reduce microbial overgrowth in water systems.Sand filters, UV filters, activated carbon filters.
Water Disinfection MethodsTechniques used to eliminate harmful microorganisms from water.Chlorination, ultraviolet (UV) treatment, ozonation, boiling.
Prevention of OvergrowthStrategies to prevent the proliferation of microorganisms in water systems.Regular maintenance, proper filtration, chemical treatments, controlling temperature and nutrient levels.
Monitoring and TestingProcesses to regularly check and assess the microbial quality of water.Routine sampling, laboratory analysis, use of test kits, continuous online monitoring systems.

Types Of Microorganisms In Water

Water contains a diverse range of microorganisms, each with unique characteristics and implications for water quality. The most common types include:

1. Bacteria: These are single-celled organisms that can either be beneficial or harmful. Pathogenic bacteria, such as E. coli and Salmonella, can cause serious diseases if present in high concentrations. However, many bacteria play beneficial roles, such as breaking down organic matter and aiding in nutrient cycling.

2. Viruses: Viruses are much smaller than bacteria and can only reproduce inside a host cell. Waterborne viruses like noroviruses and hepatitis A can cause gastrointestinal illnesses and other health issues. Due to their small size and resistance to many conventional water treatments, they can be challenging to detect and remove.

3. Protozoa: These are single-celled organisms that can be free-living or parasitic. Some protozoa, like Giardia and Cryptosporidium, can cause gastrointestinal diseases and are resistant to chlorine disinfection, making them a concern for water safety.

4. Fungi: Fungi in water include yeasts and molds, which can contribute to biofilm formation and may cause taste and odor issues. While not typically pathogenic, certain fungi can produce mycotoxins that might pose health risks under specific conditions.

4 Types Of Pathogens Found In Water

 
Type of PathogenExamplesDescriptionCommon Diseases or Symptoms
BacteriaEscherichia coli (E. coli), Salmonella, Vibrio choleraeSingle-celled microorganisms that can cause various infections when ingested through contaminated water.Diarrhea, cholera, typhoid fever, gastroenteritis
VirusesNorovirus, Hepatitis A, RotavirusSubmicroscopic infectious agents that require a host cell to replicate, causing a range of diseases.Gastroenteritis, hepatitis, viral gastroenteritis
ProtozoaGiardia lamblia, Cryptosporidium, Entamoeba histolyticaSingle-celled eukaryotes that can cause infections, often through cysts that survive in water.Giardiasis, cryptosporidiosis, amoebic dysentery
ParasitesSchistosoma, Dracunculus medinensis (Guinea worm)Multicellular organisms that can live in or on a host, causing various diseases.Schistosomiasis, dracunculiasis (Guinea worm disease)

Microorganisms Found In River Water

River water supports a diverse range of microorganisms due to its dynamic and nutrient-rich environment. Bacteria are prevalent in river systems, including both beneficial and harmful strains. Beneficial bacteria contribute to the decomposition of organic matter and nutrient cycling, which are essential for maintaining the river's ecosystem. However, pathogenic bacteria such as E. coli and Vibriospecies can also be found, especially when there is contamination from agricultural runoff, sewage, or industrial waste, posing potential health risks.

In addition to bacteria, river water can contain various viruses, including enteric viruses like noroviruses and adenoviruses. These viruses often originate from human and animal waste and can pose health hazards if the water is used for drinking or recreational purposes without adequate treatment. Protozoa, such as Giardia and Cryptosporidium, are also commonly present in river water. These microorganisms are known to cause gastrointestinal illnesses and are resistant to standard disinfection methods. Lastly, rivers may host various types of algae, including blue-green algae or cyanobacteria, as well as green and diatom algae. While some algae are benign, others can cause algal blooms that negatively impact water quality and produce toxins harmful to both aquatic life and humans. 

Role Of Microorganisms In Water

Microorganisms play crucial roles in water ecosystems by contributing to nutrient cycling and maintaining ecological balance. Beneficial bacteria decompose organic matter, recycle nutrients, and help purify water by breaking down pollutants. Protozoa and fungi also play significant roles in the decomposition of organic materials and the breakdown of complex compounds. Algae, including cyanobacteria, contribute to oxygen production through photosynthesis, supporting aquatic life. However, some microorganisms, especially pathogenic ones, can pose health risks if present in high concentrations.

Which type of water has the highest concentration of microorganisms?

This article explores microbial indicators in water, human infectious diseases caused by water, equipment and filter details related to overgrowth, water disinfection methods, and ways to prevent overgrowth.

Which type of water has the highest concentration of microorganisms? Microorganisms in Water

The spectrum of microorganisms in water and their ability to survive is very high. They possess the following characteristics:

  1. Resistance to temperature: up to 100 bacteria per gram of water have been found in the Antarctic, and some microorganisms can perform photosynthesis at 75°C in hot springs.
  2. Resistance to acidic and alkaline environments, as well as alcohol: only 70% of bacteria are destroyed by alcohols.
  3. Resistance to salts: bacteria and yeast can live in the Don Juan Antarctic lake, where the salt content is 13 times higher than in seawater.
  4. Resistance to ionizing radiation: D. radiodurans can survive up to 10,000 Gy (for humans, a lethal dose of radiation is 5 Gy, for Escherichia coli it is 2000 Gy).

Surface waters of rivers and lakes are characterized by putrefactive microorganisms (B. fluorescens, B. aquatile, B. violaceum, P. vulgaris, mold fungi, etc.).

Let's arrange water sources in ascending order by prevalence of microorganisms:

  • Water from deep artesian wells
  • Melted ice - some bacteria and fungal spores can survive freezing
  • Atmospheric precipitation collects dust and microorganisms from the air
  • Saline water bodies have less microbial diversity due to damage to cell membranes of many microbes in water caused by salts
  • Surface water bodies such as rivers, lakes, ponds, and wells have the highest microbial species diversity.

Modern bacteria that lives in water are capable of decomposing not only biological waste, but also perform important functions in breaking down toxic organic waste from enterprises. Some bacteria can even concentrate toxic heavy metals. These microbial functions are used at water treatment plants.

Natural waters, especially surface waters, always contain certain microorganisms. The greatest number of microorganisms is typically found in stagnant surface water bodies.

Microbial Indicators

microorganisms found in water

Consumption of water contaminated with microorganisms, for both drinking and technical purposes, should be avoided. Water requires disinfection to remove these harmful microbes. The degree of water contamination by microorganisms is determined by several indicators:

  • Oxidizability - this indicator characterizes the amount of strong oxidizers used to break down organic particles and microorganisms in a given volume of water. This is an indirect indicator, as not only microorganism cells but also organic impurities such as phenols are oxidized.
  • Total microbial count - this is the number of colonies that grow on a nutrient medium in 1 ml of water at an elevated temperature for a certain time (24 or 72 hours).
  • Coli-titer - this is the smallest volume of water (in milliliters) that contains one coliform bacterium.
  • Coli-index - this is the number of coliform bacteria present in 1 liter of liquid.

It is important to note that the normative indicators for drinking water can be found here.

Infectious diseases of humans

The list of infectious diseases spread through water is very wide. According to the classification of the World Health Organization, there are 17 main diseases among them. We will briefly talk about those that are found on the territory of Ukraine.

Diarrhea

micro organisms in water

Diarrhea is one of the main causes of death of children under five in poor countries (528 thousand children annually). According to official statistics, 50-60 thousand cases of diarrhea in children are registered in Ukraine every year, and 20-30 children die from it.

It is characterized by watery stools that occur more than three times a day (except for young children). It is usually caused by infections that can be caused by viruses, bacteria, parasites, and helminths. The spread of these dangerous microorganisms is often through contaminated drinking water and food, poor sanitation (diarrhea is called "disease of dirty hands" in common language). Other symptoms may vary depending on the pathogen. The biggest danger of diarrhea is that it is accompanied by dehydration, a decrease in nutrient intake, and intoxication of the body.

In Ukraine, water from centralized water supply systems is mostly safe because chlorine is effective against all types of microorganisms found in water. The most common sources of contaminated water are wells, shallow wells, and surface water bodies.

In addition to water contaminated with human and animal feces, infection can also occur through improperly processed meat, dirty vegetables, and more..

Cholera

what are the microorganisms found in water

Cholera is a highly dangerous disease caused by the bacterium Vibrio cholerae, which is present in water contaminated with fecal matter. The disease is characterized by acute watery diarrhea and can lead to severe dehydration and death within a few hours if left untreated.

While some people may not develop symptoms or experience only mild symptoms, they can still carry the bacteria and infect others through their feces, making it a significant public health concern.

The last major outbreak of cholera in Ukraine occurred in 2011 in the Donetsk region, where 33 cases were registered. It is essential to ensure that water sources are adequately treated and protected from fecal contamination to prevent the spread of this deadly disease.

Typhoid Fever

types of microorganisms in water

Typhoid fever is a bacterial infection of the intestines and bloodstream. Its causative agents are Salmonella typhi and Salmonella paratyphi. The most common modes of transmission are through contaminated drinking water and food, as well as contact with infected individuals.

Symptoms of the illness include a persistent high temperature of 39-40 °C, headache, constipation or diarrhea, rose-colored spots on the chest, and enlargement of the liver and spleen. They manifest 1-3 weeks after infection.

The global incidence of typhoid is estimated at approximately 17 million cases per year. In Ukraine, isolated cases are reported, averaging between 10 to 25 cases per year.

Leptospirosis

list of microorganisms found in water

This is a gastrointestinal infection in humans and animals. At the initial stage of this disease, symptoms often include headache and muscle pain, eye redness, chills, jaundice, bleeding under the skin and mucous membranes, diarrhea and vomiting, and rash. Lung hemorrhages are a common manifestation.

Leptospirosis is caused by pathogenic bacteria Leptospira spp. Infection occurs through direct contact with the urine of infected animals or contaminated objects such as surface waters, soil, and plants. Leptospires can enter the body through skin and mucous membrane damage of the eyes, nose, and mouth.

Therefore, the most common modes of transmission are drinking water and swimming in surface water bodies, as well as contact with infected animals.

Accurate statistics on the incidence of leptospirosis are not kept, but it occurs worldwide. The incidence rate is estimated at 0.1 to 1% per 100,000 people in moderate climates. Increased risk of infection is recorded during floods and natural disasters.

Leptospirosis in Ukraine is seasonal - in spring and summer when people spend time near water bodies. The estimated number of cases per year in Ukraine ranges from 400 to 500 people.

Campylobacteriosis

water microorganisms

This is one of the most common causes of diarrhea. Campylobacter bacteria usually have a rod-shaped or spiral-shaped form. Currently, this genus of bacteria includes 17 species and 6 subspecies of bacteria. The most common ones are C. jejuni and E. coli. The latter is commonly referred to as the intestinal bacterium.

The incubation period in this case usually lasts 2-5, rarely up to 1-10 days from the moment of infection.

Common symptoms include diarrhea (sometimes with blood in the stool), fever, nausea and vomiting, abdominal pain, and weakness. Usually, the symptoms go away within 3-6 days.

Usually, recovery occurs completely and without complications, but this pathogen is critically dangerous for young children, the elderly, and those with immunodeficiency states.

Complications can include blood infections, hepatitis, pancreatitis, as well as in some cases more complex systemic damage to the nervous and musculoskeletal systems.

Hepatitis

Two types of this virus are transmitted through water: A and E. Infection occurs by consuming water or food (often fruits and vegetables) contaminated with fecal matter. It is also possible to get infected through close contact with an infected person.

Hepatitis A is an acute infectious disease also known as "Botkin's disease" and "jaundice". The incubation period is 2-6 weeks, and the course of the disease can last from 1 to 4 weeks. Symptoms include: a characteristic yellowish skin color, fever (in the first 3-5 days), general weakness and loss of appetite, pale stools, acute abdominal pain, and rarely, liver failure.

Children usually have a mild or asymptomatic course of the disease, which is dangerous for those around them. It is important to understand that the older the person, the more difficult it is to tolerate the disease. It is particularly dangerous for the elderly and people with immunodeficiency.

It is worth noting that in January 2017, there was an outbreak of hepatitis A in Mykolaiv, with 93 cases reported. The cause of the infection was the consumption of water from the water supply that was not adequately disinfected. The prevalence of hepatitis A and E in Ukraine is estimated at several thousand cases per year.

Hepatitis E is less common, and outbreaks of the disease are rare in civilized countries, but isolated cases are possible. Symptoms and consequences are similar to hepatitis A, but in this case, the disease rarely progresses to a chronic form.

Rare isolated cases of this virus occur in Ukraine.

There is currently no treatment for hepatitis viruses, as the human immune system can defeat them on its own.

Dermatomycosis

Dermatomycosis refers to a variety of fungal infections that affect the feet, scalp, and body skin. Symptoms include red patches, itchiness, dryness, and flaking of the skin. Fungi are prevalent worldwide and can be contracted through contact with stagnant water from surface sources, public showers and pools, sharing towels with a sick person, and close contact.

Effective disinfectants containing chlorine are used to prevent fungal contamination of water. To eliminate fungal spores on surfaces, thorough drying is necessary.

The treatment for dermatomycosis depends on the severity of the disease and includes local or systemic oral antifungal drugs.

Cyanobacteria

4 types of pathogens found in water

Cyanobacteria, also known as blue-green algae, are not pathogens themselves, but some species produce toxins that can be dangerous. People can be affected by these substances when drinking or bathing in water containing cyanobacteria.

Cyanobacteria possess characteristics of both bacteria and plants (algae) as they are capable of photosynthesis.

The course of diseases caused by the metabolic products of cyanobacteria depends on the predominant type of bacteria and the way water affects humans.

Toxic effects are determined by the type of exposure (drinking water or bathing) and the type of toxin:

  1. Hepatotoxins that affect the liver are produced by some strains of Microcystis, Anabaena, Oscillatoria, Nodularia, Nostoc, Cylindrospermopsis, and Umezakia;
  2. Neurotoxins are produced by Aphanizomenon and Oscillatoria;
  3. Gastro and nephrotoxic bacteria include Cylindroapermopsis raciborski.

Not all bacterial species produce dangerous toxins, and it cannot be claimed that all types of toxins are already known.

The most common bacteria form a film on the water's surface, but if their spread is intense (as in the Dnipro River), then they occupy the entire water column, mainly closer to its surface, since they require sunlight for photosynthesis. The film is the most dangerous to human health, so water intake is usually carried out from deep parts of the reservoir.

The global solution is to reduce nutrient emissions, primarily phosphates. Also, full-scale use of disinfection technologies and further purification from disinfection products on sorption filters.

In the waters of the Dnipro River, hepatotoxic Microcystis and Oscillatoria, neurotoxic Aphanizomenon, and other bacteria are widespread, so swimming in the Dnipro River and drinking water without prior treatment is not recommended.

Accumulation of technology and filter details

microbes in water

It is important to understand that in disinfected tap water, there are practically no such microorganisms, and well water usually does not contain them, but it can be contaminated while moving through the pipeline. As for surface water, including water from wells, it usually has an elevated level of pollution.

A number of bacteria can even destroy alloyed steel, not to mention iron parts. This is observed in centralized water supply pipelines that are covered with iron bacteria, etc. This explains why active chlorine does not reach consumers in large cities of Ukraine, but practically all water samples have elevated levels of more toxic chlororganic substances.

The intensity of accumulation on plastic and ceramic surfaces is primarily characterized by their smoothness - the fewer irregularities on which microorganisms can attach, the fewer accumulations will be observed.

Water disinfection

microorganisms in the water

Different disinfection technologies are used to destroy both pathogenic and harmless microorganisms that cause film on surfaces that come into contact with water.

  • Disinfection with chlorinated compounds. Currently, there is no more effective reagent for water disinfection. Chlorine is effective against 99.9% of microorganisms. This method is ideal for use in centralized water supply systems, water in swimming pools, etc. Its main advantage is a long-lasting effect
  • Ozone - this method is quite common today. It also has high efficiency, but does not have a prolonged effect and can produce toxic interaction products. It is used in industry and is not suitable for centralized water supply systems, swimming pools, etc.
  • Ultraviolet - the advantage of this method is the absence of reagents and, consequently, secondary water pollution. However, unfortunately, this method has relatively low efficiency (90-95%) and high requirements for the source water (transparency, low color, etc.). Therefore, UV lamps are usually used as an additional element in any water treatment scheme.
  • Reverse osmosis - due to its small pores, it retains 100% of bacteria and viruses, so you get a sterile liquid at the output. This method is optimal for drinking water, both in industry and in residential conditions. To prevent secondary pollution, it is recommended to install a UV lamp after the filter.
  • Heavy metal ions damage some microorganisms. Adding them to solutions can slow down the growth of bacteria on surfaces. For this, solutions of silver salts are often added.

How to Prevent Growth?

To prevent the formation of growths, a combination of disinfection processes with other operations is used:

  • pre-disinfection and current disinfection of water;
  • mechanical cleaning;
  • regular disinfection of containers.

Depending on the goals, these methods are usually combined in different sequences.

For example, in bottled water production, disinfected water is used, which is poured into a single sterile container and tightly closed.

In production with delivery, the technology of pouring predominantly osmotic water into treated disinfectant and washed containers is used.

To solve the problem of growth in pools, mainly chlorine disinfectants, mechanical cleaning of pool walls, and water filtration on mechanical filters are used.

We have provided all the information we know about microbial water diversity. If you have any questions, please feel free to write them in the comments.

Faqs

  • Die Kontrolle von Mikroorganismen im Wasser ist wichtig, um eine sichere und saubere Wasserversorgung zu gewährleisten. Es können mehrere Maßnahmen ergriffen werden, darunter:

    • Wasseraufbereitung: Die Anwendung geeigneter Wasseraufbereitungsverfahren wie Filtration, Desinfektion (z.B. Chlorierung) und fortschrittliche Aufbereitungstechnologien können helfen, Mikroorganismen zu entfernen oder zu inaktivieren.
    • Regelmäßige Tests: Regelmäßige Überwachung und Tests von Wasserquellen auf mikrobielle Verunreinigungen sind entscheidend, um mögliche Probleme zu erkennen und umgehend geeignete Maßnahmen zu ergreifen.
    • Hygienische Praktiken: Die Förderung guter Hygienepraktiken, einschließlich ordnungsgemäßer Abfallentsorgung, Wartung von Klärsystemen und angemessener Hygienepraktiken, kann dazu beitragen, das Eindringen von Mikroorganismen in Wasserquellen zu verhindern.
    • Schutz der Wassereinzugsgebiete: Der Schutz von Wassereinzugsgebieten und die Verhinderung des Eindringens von Verunreinigungen in Gewässer kann dazu beitragen, das Vorhandensein von Mikroorganismen in der Umwelt und damit in Wasserquellen zu minimieren.

  • Controlling microorganisms in water is essential to ensure safe and clean water supplies. Several measures can be taken, including:

    • Water treatment: Implementing proper water treatment processes, such as filtration, disinfection (e.g., chlorination), and advanced treatment technologies, can help remove or inactivate microorganisms.
    • Regular testing: Regular monitoring and testing of water sources for microbial contaminants are crucial to detect any potential issues and take appropriate actions promptly.
    • Sanitation practices: Promoting good sanitation practices, including proper waste disposal, maintenance of septic systems, and adequate hygiene practices, can help prevent the introduction of microorganisms into water sources.
    • Watershed protection: Protecting watersheds and preventing pollution from entering water bodies can help minimize the presence of microorganisms in the environment and subsequently in water sources.

  • El control de los microorganismos en el agua es esencial para garantizar un suministro de agua seguro y limpio. Se pueden tomar varias medidas, entre ellas

    • Tratamiento del agua: La aplicación de procesos adecuados de tratamiento del agua, como la filtración, la desinfección (por ejemplo, la cloración) y las tecnologías avanzadas de tratamiento, pueden ayudar a eliminar o inactivar los microorganismos.
    • Pruebas regulares: El control y las pruebas regulares de las fuentes de agua para detectar contaminantes microbianos son cruciales para detectar cualquier problema potencial y tomar las medidas adecuadas con prontitud.
    • Prácticas de saneamiento: La promoción de buenas prácticas de saneamiento, incluida la eliminación correcta de los residuos, el mantenimiento de los sistemas sépticos y unas prácticas de higiene adecuadas, puede ayudar a prevenir la introducción de microorganismos en las fuentes de agua.
    • Protección de las cuencas hidrográficas: Proteger las cuencas hidrográficas y evitar que la contaminación penetre en las masas de agua puede ayudar a minimizar la presencia de microorganismos en el medio ambiente y, posteriormente, en las fuentes de agua.

  • Le contrôle des micro-organismes dans l'eau est essentiel pour garantir la sécurité et la propreté de l'approvisionnement en eau. Plusieurs mesures peuvent être prises, notamment

    • Le traitement de l'eau : La mise en œuvre de processus appropriés de traitement de l'eau, tels que la filtration, la désinfection (par exemple, la chloration) et les technologies de traitement avancées, peut contribuer à éliminer ou à inactiver les micro-organismes.
    • Analyses régulières : Il est essentiel de surveiller et d'analyser régulièrement les sources d'eau pour y détecter les contaminants microbiens, afin de détecter tout problème potentiel et de prendre rapidement les mesures qui s'imposent.
    • Pratiques d'assainissement : La promotion de bonnes pratiques sanitaires, notamment l'élimination correcte des déchets, l'entretien des fosses septiques et des pratiques d'hygiène adéquates, peut contribuer à prévenir l'introduction de micro-organismes dans les sources d'eau.
    • Protection des bassins versants : Protéger les bassins versants et empêcher la pollution de pénétrer dans les masses d'eau peut contribuer à minimiser la présence de micro-organismes dans l'environnement et, par la suite, dans les sources d'eau.

  • Il controllo dei microrganismi nell'acqua è essenziale per garantire forniture idriche sicure e pulite. Si possono adottare diverse misure, tra cui:

    • Trattamento dell'acqua: L'implementazione di processi di trattamento dell'acqua adeguati, come la filtrazione, la disinfezione (ad esempio, la clorazione) e le tecnologie di trattamento avanzate, possono aiutare a rimuovere o inattivare i microrganismi.
    • Test regolari: Il monitoraggio e l'analisi regolari delle fonti d'acqua per i contaminanti microbici sono fondamentali per individuare qualsiasi problema potenziale e adottare tempestivamente le azioni appropriate.
    • Pratiche igieniche: La promozione di buone pratiche igienico-sanitarie, tra cui un corretto smaltimento dei rifiuti, la manutenzione dei sistemi settici e pratiche igieniche adeguate, può aiutare a prevenire l'introduzione di microrganismi nelle fonti idriche.
    • Protezione dei bacini idrici: Proteggere i bacini idrografici ed evitare che l'inquinamento entri nei corpi idrici può aiutare a minimizzare la presenza di microrganismi nell'ambiente e quindi nelle fonti idriche.

  • Het beheersen van micro-organismen in water is essentieel om een veilige en schone watervoorziening te garanderen. Er kunnen verschillende maatregelen worden genomen, waaronder

    • Waterbehandeling: Het implementeren van de juiste waterbehandelingsprocessen, zoals filtratie, desinfectie (bijv. chlorering) en geavanceerde behandelingstechnologieën, kunnen helpen bij het verwijderen of inactiveren van micro-organismen.
    • Regelmatig testen: Het regelmatig controleren en testen van waterbronnen op microbiële verontreinigingen is van cruciaal belang om mogelijke problemen op te sporen en snel de juiste maatregelen te nemen.
    • Hygiënepraktijken: Het bevorderen van goede hygiënepraktijken, waaronder een goede afvalverwijdering, onderhoud van septische systemen en adequate hygiënepraktijken, kan helpen voorkomen dat micro-organismen in waterbronnen terechtkomen.
    • Bescherming van stroomgebieden: Door waterscheidingen te beschermen en te voorkomen dat vervuiling in waterlichamen terechtkomt, kan de aanwezigheid van micro-organismen in het milieu en vervolgens in waterbronnen geminimaliseerd worden.

  • Kontrolowanie mikroorganizmów w wodzie ma zasadnicze znaczenie dla zapewnienia bezpiecznych i czystych dostaw wody. Można podjąć kilka środków, w tym

    • Uzdatnianie wody: Wdrożenie odpowiednich procesów uzdatniania wody, takich jak filtracja, dezynfekcja (np. chlorowanie) i zaawansowane technologie uzdatniania, może pomóc usunąć lub unieszkodliwić mikroorganizmy.
    • Regularne badania: Regularne monitorowanie i testowanie źródeł wody pod kątem zanieczyszczeń mikrobiologicznych ma kluczowe znaczenie dla wykrycia wszelkich potencjalnych problemów i szybkiego podjęcia odpowiednich działań.
    • Praktyki sanitarne: Promowanie dobrych praktyk sanitarnych, w tym właściwego usuwania odpadów, konserwacji systemów septycznych i odpowiednich praktyk higienicznych, może pomóc w zapobieganiu wprowadzaniu mikroorganizmów do źródeł wody.
    • Ochrona działów wodnych: Ochrona działów wodnych i zapobieganie przedostawaniu się zanieczyszczeń do zbiorników wodnych może pomóc zminimalizować obecność mikroorganizmów w środowisku, a następnie w źródłach wody.

  • Controlul microorganismelor din apă este esențial pentru a asigura aprovizionarea cu apă sigură și curată. Pot fi luate mai multe măsuri, inclusiv:

    • Tratarea apei: Implementarea unor procese adecvate de tratare a apei, cum ar fi filtrarea, dezinfecția (de exemplu, clorinarea) și tehnologiile avansate de tratare, pot ajuta la eliminarea sau inactivarea microorganismelor.
    • Testarea periodică: Monitorizarea și testarea periodică a surselor de apă pentru depistarea contaminanților microbieni sunt esențiale pentru detectarea oricăror probleme potențiale și luarea promptă a măsurilor adecvate.
    • Practici de igienă: Promovarea bunelor practici de igienă, inclusiv eliminarea corespunzătoare a deșeurilor, întreținerea sistemelor septice și practici de igienă adecvate, poate contribui la prevenirea introducerii microorganismelor în sursele de apă.
    • Protecția bazinelor hidrografice: Protejarea bazinelor hidrografice și prevenirea pătrunderii poluării în corpurile de apă pot contribui la reducerea la minimum a prezenței microorganismelor în mediu și, ulterior, în sursele de apă.

  • Att kontrollera mikroorganismer i vatten är viktigt för att säkerställa en säker och ren vattenförsörjning. Flera åtgärder kan vidtas, bland annat

    • Vattenbehandling: Genom att använda lämpliga vattenbehandlingsprocesser, t.ex. filtrering, desinfektion (t.ex. klorering) och avancerad behandlingsteknik, kan man avlägsna eller inaktivera mikroorganismer.
    • Regelbunden testning: Regelbunden övervakning och testning av vattenkällor för mikrobiella föroreningar är avgörande för att upptäcka eventuella problem och snabbt vidta lämpliga åtgärder.
    • Hygieniska rutiner: Att främja goda sanitära förhållanden, inklusive korrekt avfallshantering, underhåll av septiska system och adekvata hygienrutiner, kan bidra till att förhindra att mikroorganismer förs in i vattenkällor.
    • Skydd av avrinningsområden: Att skydda avrinningsområden och förhindra att föroreningar når vattendrag kan bidra till att minimera förekomsten av mikroorganismer i miljön och därefter i vattenkällor.

  • Mikroorganismen können über verschiedene Wege in Wasserquellen gelangen. Einige häufige Quellen sind unbehandelte oder unzureichend behandelte Abwässer, landwirtschaftliche Abflüsse, die tierische Abfälle enthalten, industrielle Einleitungen und kontaminiertes Oberflächenwasser. Tierische Fäkalien, einschließlich menschlicher Fäkalien, können Krankheitserreger in das Wasser einbringen, ebenso wie wild lebende Tiere, z.B. Vögel und Nagetiere. Unzureichende sanitäre Einrichtungen und schlechte Wasserbewirtschaftungspraktiken können zum Vorhandensein von Mikroorganismen in der Wasserversorgung beitragen.

  • Mikroorganismen spielen eine entscheidende Rolle für die Gesamtqualität des Wassers. Nützliche Mikroorganismen, wie bestimmte Arten von Bakterien und Algen, tragen zum ökologischen Gleichgewicht der aquatischen Ökosysteme bei. Sie helfen beim Abbau von organischem Material, beim Nährstoffkreislauf und bei der Aufrechterhaltung der Klarheit des Wassers. Schädliche Mikroorganismen hingegen können das Wasser verunreinigen und verschiedene Krankheiten verursachen, wenn sie aufgenommen werden oder mit dem menschlichen Körper in Kontakt kommen.

  • Mikroorganismen im Wasser sind winzige lebende Organismen, die in verschiedenen Gewässern zu finden sind, darunter Seen, Flüsse, Ozeane und sogar im Leitungswasser. Sie sind vielfältig und umfassen Bakterien, Viren, Pilze und Algen. Während einige Mikroorganismen harmlos oder sogar nützlich sind, können andere durch Wasser übertragene Krankheiten verursachen und ein Gesundheitsrisiko darstellen.

  • Microorganisms can enter water sources through various means. Some common sources include untreated or inadequately treated sewage and wastewater, agricultural runoff containing animal waste, industrial discharges, and contaminated surface water. Animal feces, including that of humans, can introduce pathogens into water, as can wildlife, such as birds and rodents. Inadequate sanitation and poor water management practices can contribute to the presence of microorganisms in water supplies.

  • Microorganisms play a crucial role in the overall quality of water. Beneficial microorganisms, such as certain types of bacteria and algae, contribute to the ecological balance of aquatic ecosystems. They help in the breakdown of organic matter, nutrient cycling, and maintaining water clarity. However, harmful microorganisms can contaminate water and cause various diseases when ingested or come into contact with the human body.

  • Microorganisms in water are tiny living organisms that can be found in various bodies of water, including lakes, rivers, oceans, and even in tap water. They are diverse and include bacteria, viruses, fungi, and algae. While some microorganisms are harmless or even beneficial, others can cause waterborne diseases and pose health risks.

  • Los microorganismos pueden entrar en las fuentes de agua a través de diversos medios. Algunas fuentes habituales son las aguas residuales y cloacales no tratadas o tratadas de forma inadecuada, las escorrentías agrícolas que contienen desechos animales, los vertidos industriales y las aguas superficiales contaminadas. Las heces de los animales, incluidas las de los humanos, pueden introducir patógenos en el agua, al igual que la fauna salvaje, como aves y roedores. Un saneamiento inadecuado y unas prácticas deficientes de gestión del agua pueden contribuir a la presencia de microorganismos en los suministros de agua.

  • Los microorganismos desempeñan un papel crucial en la calidad general del agua. Los microorganismos beneficiosos, como ciertos tipos de bacterias y algas, contribuyen al equilibrio ecológico de los ecosistemas acuáticos. Ayudan en la descomposición de la materia orgánica, el ciclo de los nutrientes y el mantenimiento de la claridad del agua. Sin embargo, los microorganismos nocivos pueden contaminar el agua y causar diversas enfermedades cuando se ingieren o entran en contacto con el cuerpo humano.

  • Los microorganismos presentes en el agua son diminutos organismos vivos que pueden encontrarse en diversas masas de agua, como lagos, ríos, océanos e incluso en el agua del grifo. Son diversos e incluyen bacterias, virus, hongos y algas. Mientras que algunos microorganismos son inofensivos o incluso beneficiosos, otros pueden causar enfermedades transmitidas por el agua y suponer riesgos para la salud.

  • Les micro-organismes peuvent pénétrer dans les sources d'eau par différents moyens. Parmi les sources les plus courantes, citons les eaux usées non traitées ou insuffisamment traitées, le ruissellement agricole contenant des déchets animaux, les rejets industriels et les eaux de surface contaminées. Les excréments d'animaux, y compris ceux des humains, peuvent introduire des agents pathogènes dans l'eau, tout comme les animaux sauvages, tels que les oiseaux et les rongeurs. Un assainissement inadéquat et de mauvaises pratiques de gestion de l'eau peuvent contribuer à la présence de micro-organismes dans les réserves d'eau.

  • Les micro-organismes jouent un rôle crucial dans la qualité générale de l'eau. Les micro-organismes bénéfiques, tels que certains types de bactéries et d'algues, contribuent à l'équilibre écologique des écosystèmes aquatiques. Ils participent à la décomposition de la matière organique, au cycle des nutriments et au maintien de la clarté de l'eau. Toutefois, les micro-organismes nuisibles peuvent contaminer l'eau et provoquer diverses maladies lorsqu'ils sont ingérés ou entrent en contact avec le corps humain.

  • Les micro-organismes présents dans l'eau sont de minuscules organismes vivants que l'on peut trouver dans diverses masses d'eau, notamment les lacs, les rivières, les océans et même l'eau du robinet. Ils sont très divers et comprennent des bactéries, des virus, des champignons et des algues. Si certains micro-organismes sont inoffensifs, voire bénéfiques, d'autres peuvent provoquer des maladies d'origine hydrique et présenter des risques pour la santé.

  • I microrganismi possono entrare nelle fonti d'acqua attraverso vari mezzi. Alcune fonti comuni includono le acque reflue non trattate o trattate in modo inadeguato, il deflusso agricolo contenente rifiuti animali, gli scarichi industriali e le acque superficiali contaminate. Le feci degli animali, comprese quelle degli esseri umani, possono introdurre agenti patogeni nell'acqua, così come la fauna selvatica, come uccelli e roditori. Servizi igienici inadeguati e cattive pratiche di gestione dell'acqua possono contribuire alla presenza di microrganismi nelle forniture idriche.

  • I microrganismi svolgono un ruolo cruciale nella qualità complessiva dell'acqua. I microrganismi benefici, come alcuni tipi di batteri e alghe, contribuiscono all'equilibrio ecologico degli ecosistemi acquatici. Aiutano nella scomposizione della materia organica, nel ciclo dei nutrienti e nel mantenimento della limpidezza dell'acqua. Tuttavia, i microrganismi nocivi possono contaminare l'acqua e causare varie malattie quando vengono ingeriti o entrano in contatto con il corpo umano.

  • I microrganismi nell'acqua sono minuscoli organismi viventi che si trovano in vari corpi idrici, tra cui laghi, fiumi, oceani e persino nell'acqua del rubinetto. Sono diversi e comprendono batteri, virus, funghi e alghe. Mentre alcuni microrganismi sono innocui o addirittura benefici, altri possono causare malattie trasmesse dall'acqua e rappresentare un rischio per la salute.

  • Micro-organismen kunnen op verschillende manieren in waterbronnen terechtkomen. Enkele veel voorkomende bronnen zijn onbehandeld of onvoldoende behandeld rioolwater en afvalwater, afspoeling van de landbouw met dierlijk afval, industriële lozingen en verontreinigd oppervlaktewater. Uitwerpselen van dieren, waaronder mensen, kunnen ziekteverwekkers in het water brengen, net als wilde dieren zoals vogels en knaagdieren. Onvoldoende sanitaire voorzieningen en slecht waterbeheer kunnen bijdragen aan de aanwezigheid van micro-organismen in watervoorraden.

  • Micro-organismen spelen een cruciale rol in de algehele waterkwaliteit. Nuttige micro-organismen, zoals bepaalde soorten bacteriën en algen, dragen bij aan het ecologisch evenwicht van aquatische ecosystemen. Ze helpen bij de afbraak van organisch materiaal, de kringloop van voedingsstoffen en het helder houden van het water. Schadelijke micro-organismen kunnen echter het water verontreinigen en verschillende ziekten veroorzaken wanneer ze worden ingeslikt of in contact komen met het menselijk lichaam.

  • Micro-organismen in water zijn piepkleine levende organismen die in verschillende waterlichamen voorkomen, waaronder meren, rivieren, oceanen en zelfs in kraanwater. Ze zijn divers en omvatten bacteriën, virussen, schimmels en algen. Hoewel sommige micro-organismen onschadelijk of zelfs nuttig zijn, kunnen andere ziekten in het water veroorzaken en gezondheidsrisico's met zich meebrengen.

  • Mikroorganizmy mogą przedostawać się do źródeł wody na różne sposoby. Niektóre powszechne źródła obejmują nieoczyszczone lub nieodpowiednio oczyszczone ścieki i ścieki, spływy rolnicze zawierające odpady zwierzęce, zrzuty przemysłowe i zanieczyszczone wody powierzchniowe. Odchody zwierząt, w tym ludzi, mogą wprowadzać patogeny do wody, podobnie jak dzikie zwierzęta, takie jak ptaki i gryzonie. Nieodpowiednie warunki sanitarne i złe praktyki zarządzania wodą mogą przyczyniać się do obecności mikroorganizmów w zasobach wodnych.

  • Mikroorganizmy odgrywają kluczową rolę w ogólnej jakości wody. Pożyteczne mikroorganizmy, takie jak niektóre rodzaje bakterii i glonów, przyczyniają się do równowagi ekologicznej ekosystemów wodnych. Pomagają w rozkładzie materii organicznej, obiegu składników odżywczych i utrzymaniu przejrzystości wody. Szkodliwe mikroorganizmy mogą jednak zanieczyszczać wodę i powodować różne choroby w przypadku spożycia lub kontaktu z ludzkim ciałem.

  • Mikroorganizmy w wodzie to maleńkie żywe organizmy, które można znaleźć w różnych zbiornikach wodnych, w tym w jeziorach, rzekach, oceanach, a nawet w wodzie z kranu. Są one różnorodne i obejmują bakterie, wirusy, grzyby i glony. Podczas gdy niektóre mikroorganizmy są nieszkodliwe, a nawet korzystne, inne mogą powodować choroby przenoszone przez wodę i stanowić zagrożenie dla zdrowia.

  • Microorganismele pot pătrunde în sursele de apă prin diverse mijloace. Unele surse comune includ apele uzate netratate sau tratate necorespunzător, scurgerile agricole care conțin deșeuri animale, deversările industriale și apele de suprafață contaminate. Fecalele animalelor, inclusiv cele ale oamenilor, pot introduce agenți patogeni în apă, la fel ca și animalele sălbatice, cum ar fi păsările și rozătoarele. Igiena necorespunzătoare și practicile deficitare de gestionare a apei pot contribui la prezența microorganismelor în sursele de apă.

  • Microorganismele joacă un rol crucial în calitatea generală a apei. Microorganismele benefice, cum ar fi anumite tipuri de bacterii și alge, contribuie la echilibrul ecologic al ecosistemelor acvatice. Acestea ajută la descompunerea materiei organice, la ciclul nutrienților și la menținerea clarității apei. Cu toate acestea, microorganismele dăunătoare pot contamina apa și provoca diverse boli atunci când sunt ingerate sau intră în contact cu corpul uman.

  • Microorganismele din apă sunt organisme vii minuscule care pot fi găsite în diferite corpuri de apă, inclusiv lacuri, râuri, oceane și chiar în apa de la robinet. Acestea sunt diverse și includ bacterii, viruși, ciuperci și alge. În timp ce unele microorganisme sunt inofensive sau chiar benefice, altele pot provoca boli transmise prin apă și prezintă riscuri pentru sănătate.

  • Mikroorganismer kan komma in i vattenkällor på olika sätt. Några vanliga källor är obehandlat eller otillräckligt behandlat avlopps- och spillvatten, jordbruksavrinning som innehåller animaliskt avfall, industriutsläpp och förorenat ytvatten. Avföring från djur, inklusive människor, kan föra med sig patogener till vatten, liksom vilda djur, t.ex. fåglar och gnagare. Otillräckliga sanitära förhållanden och dålig vattenhantering kan bidra till förekomsten av mikroorganismer i vattenförsörjningen.

  • Mikroorganismer spelar en avgörande roll för den övergripande vattenkvaliteten. Nyttiga mikroorganismer, som vissa typer av bakterier och alger, bidrar till den ekologiska balansen i akvatiska ekosystem. De hjälper till med nedbrytningen av organiskt material, näringsämnenas kretslopp och upprätthåller vattnets klarhet. Skadliga mikroorganismer kan dock förorena vattnet och orsaka olika sjukdomar när de intas eller kommer i kontakt med människokroppen.

  • Mikroorganismer i vatten är små levande organismer som kan hittas i olika vattendrag, inklusive sjöar, floder, hav och till och med i kranvatten. De är olika och omfattar bakterier, virus, svampar och alger. Vissa mikroorganismer är ofarliga eller till och med nyttiga, medan andra kan orsaka vattenburna sjukdomar och utgöra hälsorisker.

Exploring Microorganisms in Water: Essential Aquatic Life Forms Microorganisms in water Discover the diverse microorganisms in water, including bacteria and fungi, and their crucial roles in maintaining the planet's biological diversity. 2024-07-29 2024-07-29

There are several thousand names of microorganisms that live in water. These include various bacteria, fungi, and others. They are an integral part of the planet's biological diversity and perform important functions.

microorganisms in water

What Are The Microorganisms Found In Water?

If we try to classify water microorganisms, we can divide them into groups:

  1. Blue-green algae or cyanobacteria are an integral part of every body of water, making up 60% of all microorganisms.
  2. Pathogenic and conditionally pathogenic microorganisms: viruses, bacteria, fungi, protozoa.
  3. Relatively safe organisms that can be in water and do not cause dangerous diseases.

 
TopicDetailsExamples/Methods
Microbial Indicators in WaterIndicators that reveal the presence and levels of microorganisms in water sources.Total coliforms, fecal coliforms, E. coli, enterococci.
Human Infectious DiseasesDiseases caused by pathogens present in contaminated water.Cholera, dysentery, typhoid fever, hepatitis A.
Equipment and FiltersTools and devices used to manage and reduce microbial overgrowth in water systems.Sand filters, UV filters, activated carbon filters.
Water Disinfection MethodsTechniques used to eliminate harmful microorganisms from water.Chlorination, ultraviolet (UV) treatment, ozonation, boiling.
Prevention of OvergrowthStrategies to prevent the proliferation of microorganisms in water systems.Regular maintenance, proper filtration, chemical treatments, controlling temperature and nutrient levels.
Monitoring and TestingProcesses to regularly check and assess the microbial quality of water.Routine sampling, laboratory analysis, use of test kits, continuous online monitoring systems.

Types Of Microorganisms In Water

Water contains a diverse range of microorganisms, each with unique characteristics and implications for water quality. The most common types include:

1. Bacteria: These are single-celled organisms that can either be beneficial or harmful. Pathogenic bacteria, such as E. coli and Salmonella, can cause serious diseases if present in high concentrations. However, many bacteria play beneficial roles, such as breaking down organic matter and aiding in nutrient cycling.

2. Viruses: Viruses are much smaller than bacteria and can only reproduce inside a host cell. Waterborne viruses like noroviruses and hepatitis A can cause gastrointestinal illnesses and other health issues. Due to their small size and resistance to many conventional water treatments, they can be challenging to detect and remove.

3. Protozoa: These are single-celled organisms that can be free-living or parasitic. Some protozoa, like Giardia and Cryptosporidium, can cause gastrointestinal diseases and are resistant to chlorine disinfection, making them a concern for water safety.

4. Fungi: Fungi in water include yeasts and molds, which can contribute to biofilm formation and may cause taste and odor issues. While not typically pathogenic, certain fungi can produce mycotoxins that might pose health risks under specific conditions.

4 Types Of Pathogens Found In Water

 
Type of PathogenExamplesDescriptionCommon Diseases or Symptoms
BacteriaEscherichia coli (E. coli), Salmonella, Vibrio choleraeSingle-celled microorganisms that can cause various infections when ingested through contaminated water.Diarrhea, cholera, typhoid fever, gastroenteritis
VirusesNorovirus, Hepatitis A, RotavirusSubmicroscopic infectious agents that require a host cell to replicate, causing a range of diseases.Gastroenteritis, hepatitis, viral gastroenteritis
ProtozoaGiardia lamblia, Cryptosporidium, Entamoeba histolyticaSingle-celled eukaryotes that can cause infections, often through cysts that survive in water.Giardiasis, cryptosporidiosis, amoebic dysentery
ParasitesSchistosoma, Dracunculus medinensis (Guinea worm)Multicellular organisms that can live in or on a host, causing various diseases.Schistosomiasis, dracunculiasis (Guinea worm disease)

Microorganisms Found In River Water

River water supports a diverse range of microorganisms due to its dynamic and nutrient-rich environment. Bacteria are prevalent in river systems, including both beneficial and harmful strains. Beneficial bacteria contribute to the decomposition of organic matter and nutrient cycling, which are essential for maintaining the river's ecosystem. However, pathogenic bacteria such as E. coli and Vibriospecies can also be found, especially when there is contamination from agricultural runoff, sewage, or industrial waste, posing potential health risks.

In addition to bacteria, river water can contain various viruses, including enteric viruses like noroviruses and adenoviruses. These viruses often originate from human and animal waste and can pose health hazards if the water is used for drinking or recreational purposes without adequate treatment. Protozoa, such as Giardia and Cryptosporidium, are also commonly present in river water. These microorganisms are known to cause gastrointestinal illnesses and are resistant to standard disinfection methods. Lastly, rivers may host various types of algae, including blue-green algae or cyanobacteria, as well as green and diatom algae. While some algae are benign, others can cause algal blooms that negatively impact water quality and produce toxins harmful to both aquatic life and humans. 

Role Of Microorganisms In Water

Microorganisms play crucial roles in water ecosystems by contributing to nutrient cycling and maintaining ecological balance. Beneficial bacteria decompose organic matter, recycle nutrients, and help purify water by breaking down pollutants. Protozoa and fungi also play significant roles in the decomposition of organic materials and the breakdown of complex compounds. Algae, including cyanobacteria, contribute to oxygen production through photosynthesis, supporting aquatic life. However, some microorganisms, especially pathogenic ones, can pose health risks if present in high concentrations.

Which type of water has the highest concentration of microorganisms?

This article explores microbial indicators in water, human infectious diseases caused by water, equipment and filter details related to overgrowth, water disinfection methods, and ways to prevent overgrowth.

Which type of water has the highest concentration of microorganisms? Microorganisms in Water

The spectrum of microorganisms in water and their ability to survive is very high. They possess the following characteristics:

  1. Resistance to temperature: up to 100 bacteria per gram of water have been found in the Antarctic, and some microorganisms can perform photosynthesis at 75°C in hot springs.
  2. Resistance to acidic and alkaline environments, as well as alcohol: only 70% of bacteria are destroyed by alcohols.
  3. Resistance to salts: bacteria and yeast can live in the Don Juan Antarctic lake, where the salt content is 13 times higher than in seawater.
  4. Resistance to ionizing radiation: D. radiodurans can survive up to 10,000 Gy (for humans, a lethal dose of radiation is 5 Gy, for Escherichia coli it is 2000 Gy).

Surface waters of rivers and lakes are characterized by putrefactive microorganisms (B. fluorescens, B. aquatile, B. violaceum, P. vulgaris, mold fungi, etc.).

Let's arrange water sources in ascending order by prevalence of microorganisms:

  • Water from deep artesian wells
  • Melted ice - some bacteria and fungal spores can survive freezing
  • Atmospheric precipitation collects dust and microorganisms from the air
  • Saline water bodies have less microbial diversity due to damage to cell membranes of many microbes in water caused by salts
  • Surface water bodies such as rivers, lakes, ponds, and wells have the highest microbial species diversity.

Modern bacteria that lives in water are capable of decomposing not only biological waste, but also perform important functions in breaking down toxic organic waste from enterprises. Some bacteria can even concentrate toxic heavy metals. These microbial functions are used at water treatment plants.

Natural waters, especially surface waters, always contain certain microorganisms. The greatest number of microorganisms is typically found in stagnant surface water bodies.

Microbial Indicators

microorganisms found in water

Consumption of water contaminated with microorganisms, for both drinking and technical purposes, should be avoided. Water requires disinfection to remove these harmful microbes. The degree of water contamination by microorganisms is determined by several indicators:

  • Oxidizability - this indicator characterizes the amount of strong oxidizers used to break down organic particles and microorganisms in a given volume of water. This is an indirect indicator, as not only microorganism cells but also organic impurities such as phenols are oxidized.
  • Total microbial count - this is the number of colonies that grow on a nutrient medium in 1 ml of water at an elevated temperature for a certain time (24 or 72 hours).
  • Coli-titer - this is the smallest volume of water (in milliliters) that contains one coliform bacterium.
  • Coli-index - this is the number of coliform bacteria present in 1 liter of liquid.

It is important to note that the normative indicators for drinking water can be found here.

Infectious diseases of humans

The list of infectious diseases spread through water is very wide. According to the classification of the World Health Organization, there are 17 main diseases among them. We will briefly talk about those that are found on the territory of Ukraine.

Diarrhea

micro organisms in water

Diarrhea is one of the main causes of death of children under five in poor countries (528 thousand children annually). According to official statistics, 50-60 thousand cases of diarrhea in children are registered in Ukraine every year, and 20-30 children die from it.

It is characterized by watery stools that occur more than three times a day (except for young children). It is usually caused by infections that can be caused by viruses, bacteria, parasites, and helminths. The spread of these dangerous microorganisms is often through contaminated drinking water and food, poor sanitation (diarrhea is called "disease of dirty hands" in common language). Other symptoms may vary depending on the pathogen. The biggest danger of diarrhea is that it is accompanied by dehydration, a decrease in nutrient intake, and intoxication of the body.

In Ukraine, water from centralized water supply systems is mostly safe because chlorine is effective against all types of microorganisms found in water. The most common sources of contaminated water are wells, shallow wells, and surface water bodies.

In addition to water contaminated with human and animal feces, infection can also occur through improperly processed meat, dirty vegetables, and more..

Cholera

what are the microorganisms found in water

Cholera is a highly dangerous disease caused by the bacterium Vibrio cholerae, which is present in water contaminated with fecal matter. The disease is characterized by acute watery diarrhea and can lead to severe dehydration and death within a few hours if left untreated.

While some people may not develop symptoms or experience only mild symptoms, they can still carry the bacteria and infect others through their feces, making it a significant public health concern.

The last major outbreak of cholera in Ukraine occurred in 2011 in the Donetsk region, where 33 cases were registered. It is essential to ensure that water sources are adequately treated and protected from fecal contamination to prevent the spread of this deadly disease.

Typhoid Fever

types of microorganisms in water

Typhoid fever is a bacterial infection of the intestines and bloodstream. Its causative agents are Salmonella typhi and Salmonella paratyphi. The most common modes of transmission are through contaminated drinking water and food, as well as contact with infected individuals.

Symptoms of the illness include a persistent high temperature of 39-40 °C, headache, constipation or diarrhea, rose-colored spots on the chest, and enlargement of the liver and spleen. They manifest 1-3 weeks after infection.

The global incidence of typhoid is estimated at approximately 17 million cases per year. In Ukraine, isolated cases are reported, averaging between 10 to 25 cases per year.

Leptospirosis

list of microorganisms found in water

This is a gastrointestinal infection in humans and animals. At the initial stage of this disease, symptoms often include headache and muscle pain, eye redness, chills, jaundice, bleeding under the skin and mucous membranes, diarrhea and vomiting, and rash. Lung hemorrhages are a common manifestation.

Leptospirosis is caused by pathogenic bacteria Leptospira spp. Infection occurs through direct contact with the urine of infected animals or contaminated objects such as surface waters, soil, and plants. Leptospires can enter the body through skin and mucous membrane damage of the eyes, nose, and mouth.

Therefore, the most common modes of transmission are drinking water and swimming in surface water bodies, as well as contact with infected animals.

Accurate statistics on the incidence of leptospirosis are not kept, but it occurs worldwide. The incidence rate is estimated at 0.1 to 1% per 100,000 people in moderate climates. Increased risk of infection is recorded during floods and natural disasters.

Leptospirosis in Ukraine is seasonal - in spring and summer when people spend time near water bodies. The estimated number of cases per year in Ukraine ranges from 400 to 500 people.

Campylobacteriosis

water microorganisms

This is one of the most common causes of diarrhea. Campylobacter bacteria usually have a rod-shaped or spiral-shaped form. Currently, this genus of bacteria includes 17 species and 6 subspecies of bacteria. The most common ones are C. jejuni and E. coli. The latter is commonly referred to as the intestinal bacterium.

The incubation period in this case usually lasts 2-5, rarely up to 1-10 days from the moment of infection.

Common symptoms include diarrhea (sometimes with blood in the stool), fever, nausea and vomiting, abdominal pain, and weakness. Usually, the symptoms go away within 3-6 days.

Usually, recovery occurs completely and without complications, but this pathogen is critically dangerous for young children, the elderly, and those with immunodeficiency states.

Complications can include blood infections, hepatitis, pancreatitis, as well as in some cases more complex systemic damage to the nervous and musculoskeletal systems.

Hepatitis

Two types of this virus are transmitted through water: A and E. Infection occurs by consuming water or food (often fruits and vegetables) contaminated with fecal matter. It is also possible to get infected through close contact with an infected person.

Hepatitis A is an acute infectious disease also known as "Botkin's disease" and "jaundice". The incubation period is 2-6 weeks, and the course of the disease can last from 1 to 4 weeks. Symptoms include: a characteristic yellowish skin color, fever (in the first 3-5 days), general weakness and loss of appetite, pale stools, acute abdominal pain, and rarely, liver failure.

Children usually have a mild or asymptomatic course of the disease, which is dangerous for those around them. It is important to understand that the older the person, the more difficult it is to tolerate the disease. It is particularly dangerous for the elderly and people with immunodeficiency.

It is worth noting that in January 2017, there was an outbreak of hepatitis A in Mykolaiv, with 93 cases reported. The cause of the infection was the consumption of water from the water supply that was not adequately disinfected. The prevalence of hepatitis A and E in Ukraine is estimated at several thousand cases per year.

Hepatitis E is less common, and outbreaks of the disease are rare in civilized countries, but isolated cases are possible. Symptoms and consequences are similar to hepatitis A, but in this case, the disease rarely progresses to a chronic form.

Rare isolated cases of this virus occur in Ukraine.

There is currently no treatment for hepatitis viruses, as the human immune system can defeat them on its own.

Dermatomycosis

Dermatomycosis refers to a variety of fungal infections that affect the feet, scalp, and body skin. Symptoms include red patches, itchiness, dryness, and flaking of the skin. Fungi are prevalent worldwide and can be contracted through contact with stagnant water from surface sources, public showers and pools, sharing towels with a sick person, and close contact.

Effective disinfectants containing chlorine are used to prevent fungal contamination of water. To eliminate fungal spores on surfaces, thorough drying is necessary.

The treatment for dermatomycosis depends on the severity of the disease and includes local or systemic oral antifungal drugs.

Cyanobacteria

4 types of pathogens found in water

Cyanobacteria, also known as blue-green algae, are not pathogens themselves, but some species produce toxins that can be dangerous. People can be affected by these substances when drinking or bathing in water containing cyanobacteria.

Cyanobacteria possess characteristics of both bacteria and plants (algae) as they are capable of photosynthesis.

The course of diseases caused by the metabolic products of cyanobacteria depends on the predominant type of bacteria and the way water affects humans.

Toxic effects are determined by the type of exposure (drinking water or bathing) and the type of toxin:

  1. Hepatotoxins that affect the liver are produced by some strains of Microcystis, Anabaena, Oscillatoria, Nodularia, Nostoc, Cylindrospermopsis, and Umezakia;
  2. Neurotoxins are produced by Aphanizomenon and Oscillatoria;
  3. Gastro and nephrotoxic bacteria include Cylindroapermopsis raciborski.

Not all bacterial species produce dangerous toxins, and it cannot be claimed that all types of toxins are already known.

The most common bacteria form a film on the water's surface, but if their spread is intense (as in the Dnipro River), then they occupy the entire water column, mainly closer to its surface, since they require sunlight for photosynthesis. The film is the most dangerous to human health, so water intake is usually carried out from deep parts of the reservoir.

The global solution is to reduce nutrient emissions, primarily phosphates. Also, full-scale use of disinfection technologies and further purification from disinfection products on sorption filters.

In the waters of the Dnipro River, hepatotoxic Microcystis and Oscillatoria, neurotoxic Aphanizomenon, and other bacteria are widespread, so swimming in the Dnipro River and drinking water without prior treatment is not recommended.

Accumulation of technology and filter details

microbes in water

It is important to understand that in disinfected tap water, there are practically no such microorganisms, and well water usually does not contain them, but it can be contaminated while moving through the pipeline. As for surface water, including water from wells, it usually has an elevated level of pollution.

A number of bacteria can even destroy alloyed steel, not to mention iron parts. This is observed in centralized water supply pipelines that are covered with iron bacteria, etc. This explains why active chlorine does not reach consumers in large cities of Ukraine, but practically all water samples have elevated levels of more toxic chlororganic substances.

The intensity of accumulation on plastic and ceramic surfaces is primarily characterized by their smoothness - the fewer irregularities on which microorganisms can attach, the fewer accumulations will be observed.

Water disinfection

microorganisms in the water

Different disinfection technologies are used to destroy both pathogenic and harmless microorganisms that cause film on surfaces that come into contact with water.

  • Disinfection with chlorinated compounds. Currently, there is no more effective reagent for water disinfection. Chlorine is effective against 99.9% of microorganisms. This method is ideal for use in centralized water supply systems, water in swimming pools, etc. Its main advantage is a long-lasting effect
  • Ozone - this method is quite common today. It also has high efficiency, but does not have a prolonged effect and can produce toxic interaction products. It is used in industry and is not suitable for centralized water supply systems, swimming pools, etc.
  • Ultraviolet - the advantage of this method is the absence of reagents and, consequently, secondary water pollution. However, unfortunately, this method has relatively low efficiency (90-95%) and high requirements for the source water (transparency, low color, etc.). Therefore, UV lamps are usually used as an additional element in any water treatment scheme.
  • Reverse osmosis - due to its small pores, it retains 100% of bacteria and viruses, so you get a sterile liquid at the output. This method is optimal for drinking water, both in industry and in residential conditions. To prevent secondary pollution, it is recommended to install a UV lamp after the filter.
  • Heavy metal ions damage some microorganisms. Adding them to solutions can slow down the growth of bacteria on surfaces. For this, solutions of silver salts are often added.

How to Prevent Growth?

To prevent the formation of growths, a combination of disinfection processes with other operations is used:

  • pre-disinfection and current disinfection of water;
  • mechanical cleaning;
  • regular disinfection of containers.

Depending on the goals, these methods are usually combined in different sequences.

For example, in bottled water production, disinfected water is used, which is poured into a single sterile container and tightly closed.

In production with delivery, the technology of pouring predominantly osmotic water into treated disinfectant and washed containers is used.

To solve the problem of growth in pools, mainly chlorine disinfectants, mechanical cleaning of pool walls, and water filtration on mechanical filters are used.

We have provided all the information we know about microbial water diversity. If you have any questions, please feel free to write them in the comments.

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