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Bacteria in water — What viruses and bacteria are present in water?

Not only are people largely depends on water, it is a habitat of many living organisms. Using the liquid or contacting with it, people come in contact with many microorganisms, among which are total coliforms. In some cases, coliform bacteria in water pose a threat to health or life.

In order to minimize the amount of harmful organisms, liquid, widely distributed complexes of filtration and purification, specialists made recommendations in relation to the water. Thermotolerant coliform bacteria are the most resistant to high temperatures, thus their elimination is a little complicated.

Fluid in everyday life

Modern man consumes water from various sources may include wells, water system or liquid in the bottle. For maximum protection of water tanks against biological contamination by various methods of cleaning. They are based on a filtering or cleaning with chemical elements.
Such cleaners help to deal with the following types of bacteria: enterobacteria, various types of Pseudomonas aeruginosa, thermotolerant coliform bacteria, cyanobacteria and pathogens of cholera. All of these organisms are dangerous to humans. The effects on the human body of these organisms can be different. Often they can manifest themselves in disorders of the stomach or intestines. The degree of manifestation may be different, it depends on the toxicity of products secreted by the bacteria.
Determine the presence of harmful microorganisms fluid with bacterial seeding. This analysis should be carried out by laboratories of Vodokanal. However, each consumer has the opportunity to check the quality used to drinking the liquid.

Coliforms

This classification of organisms is a separation based on sanitary — hygienic norms. Thermotolerant coliform bacteria fecal are defined, they fall into the liquid through the excrement of some living beings. Harmless bacteria of this type are elements of the intestinal environment. Directly coliforms do not cause severe harm to human beings, however let you know that the person had contact with infected surface or water.
Threat those organisms which penetrate through the excrement of certain animals (pigs, cows, etc.). California harmful bacteria of animal origin are the most dangerous, they can cause disorders and inflammatory processes of the intestine.
Most of the data bacteria thermotolerant means that these microorganisms are resistant to low temperatures. They can develop at temperature up to -60 degrees. Actively developing at high temperature microorganisms are called thermophiles. To eliminate coliforms may by ordinary boiling of the liquid.

The detection of harmful organisms in the liquid

Before use water it must be checked for the presence of harmful organisms. In view of the negative state complexes of water, often flowing water is full of harmful organisms.

California bacteria in water for human consumption should be excluded, their presence can cause mass infection. Health services prohibits the presence of microorganisms in the liquid, because they can bring even to death.
To identify a bacteria is difficult, therefore, developed a special laboratory techniques including chemistry and biology. The taste or color to identify the presence of microorganisms impossible.

Where there are coliforms?

These microorganisms live in the human intestine or the animal world. The development of bacteria probably by means of water entering the faeces. Excrement can fall through the drain ditches, cesspools or filter trenches. Due to moving of soil coliforms can appear in the wells. Often people do not notice this factor, therefore, experts suggest to check the sample wells, especially when there is no filtration system.

Decontamination methods

At each station there is a water stage of water disinfection, thereby eliminating harmful bacteria. The most popular method of cleaning determine disinfection unit. Perhaps the elimination of coliform bacteria by the manual method, but this manipulation can lead to seriousconsequences. In the operation of the disinfection unit, manual labor has long been excluded.

In various enterprises for the cleaning liquid used chemicals. However, this water to drink the. For drinking water disinfection using ultraviolet light, this procedure is completely safe.

In order to properly make a sample of the liquid in a domestic environment, experts recommend:

  • Use a sterile container,
  • Before the procedure, wash hands with soap and water,
  • The tip of the tap handle alcohol,
  • To deliver the container to the laboratory rapidly (up to 2 hours).

Features of the activity of bacteria

Coliforms can be in meat broth, their numbers can reach a large number. The amount of sediment visible to the naked eye, the broth may be only slightly cloudy. Color microorganisms can be gray, colony OKB can cast a red tint. Bacteria, lactose-intolerant, often colorless. To determine the microorganisms in color very difficult.

Due to its biochemical parameters, coliforms do not give milk to clot and gelatin in contaminated water does not dissolve.

The resistance of coliforms to various factors

Disinfection of coliform bacteria or Escherichia coli – the procedure is not complicated. They die at temperatures of 65 to 75 degrees for 15 minutes. Phenol solution 1% eliminates the wand for 5 – 10 minutes.

These microorganisms can affect not only liquid, but also for fruit and vegetables, soil, household surfaces. A person may develop E. coli with prolonged or uncontrolled use of antibiotics. Such microorganisms can cause typhoid, dysentery and other serious diseases.

In order to prevent mass infection, the condition of fluids will certainly need to follow. Removal of bacteria is possible only in two ways – chemical and physical. For the purification of waste water can be used strong chemicals, however, after this stage it is necessary to carry out repeated cleaning in a more gentle manner.
The most effective method of water purification define a concentrated liquid oxygen. This method is characterized by the rapid evaporation of the liquid, high quality cleaning and with the exception of the remainder. However, this treatment is very expensive, and liquid oxygen are difficult to make.

Sources of bacteria in the home

For the quality level of tap water following sanitation services, and what to do in the home or office environment? There are many variants of infection, take a closer look.

  1. Water from the cooler. In the presence of contamination on the hands of the previous visitor, the probability of penetration of bacteria is very high. Scientists from China have conducted studies, which showed that the water from each of the third cooler are infected with bacteria.
  2. Rainwater collection is a favorable environment for development of coliforms. Today, such a liquid is not recommended for use even for irrigation.
  3. Open source not only infected by coliform bacteria, but also many other types. Seawater the sources of infection is not applicable because the risk of harmful bacteria is minimal.
  4. Microflora of the pipes. In many cases, if the water from the tap Californie infected with bacteria, this is due to the bad condition of the gutters, eventually they rust and harmful impurities.