Some are living in water and bottom sediments ...

How koliformnyh bacteria affect water quality? What koliformnyh bacteria? Koliformni

, is always present in the digestive tract of animals, including humans, and are in their waste. They are also found in plant material and soil. The most basic test for bacterial contamination of water is a challenge for all. Total counts of intestinal give an overview of the sanitary condition of water. Here's a look at koliformnyh bacteria in general: Total koliformnyh bacteria are bacteria that are in the soil, in water, which was under the influence, and in human or animal waste. Fecal coliforms are a group of general E. coli that are present particularly in the intestines and feces of warm-blooded animals. Because the sources of fecal bacteria koliformnyh is more specific than the more general common origin of the intestinal group of bacteria, fecal bacteria koliformnyh considered more accurate indication of animal or human waste than total koliformnyh bacteria. is the main group in fecal bacteria of the intestinal group. Of the five major groups of bacteria that are common E. coli, but E. coli is usually found to grow and multiply in the environment. Thus, E. coli bacteria is Escherichia strattera online coli, which is the best indicator of fecal contamination and the possible presence. There is a group of bacteria Escherichia coli harmful? Most groups of bacteria Escherichia coli do not cause disease. However, some rare strains of E. coli, including strain 0157: H7, can cause serious illness. Recent outbreaks of diseases caused by Escherichia coli 0157: H7, caused great public concern about this organism. Escherichia coli 0157: H7 was detected in cattle, chickens, pigs and sheep. Most cases of human to be associated with eating cooked in hamburger. Cases of E. coli 0157: H7, caused by contaminated drinking water are rare. Water pollution caused by fecal contamination is a serious problem because of the possibility of contracting diseases from pathogens (diseasecausing organisms). Often the concentration of fecal pathogen pollution are small, and the number of different possible pathogens great. As a result, it is not practical to test pathogens in each sample is collected. Instead, the presence of pathogens is determined by indirect evidence by testing for indicator organism such as bacteria E. coli. Koliformni came from the same sources as pathogenic organisms. Koliformni relatively easy to identify, usually present in large numbers, the more dangerous pathogens, and react to the environment and water as well, many pathogens. As a result of testing for E. coli bacteria may be reasonable instructions or other pathogenic bacteria may be present. The number of bacteria occur naturally in fresh water streams. Some are living in water and bottom sediments as photosynthetic autotrophs or saphrophytes live on dead matter. Others exist, or to other organisms as mutual symbionts (of any benefit to the host organism in exchange for housing), commensuals (no help or hurt the owner) or parasites (using host in a way that harms). Some bacteria that live in the gastrointestinal tract of animals are essential for recovering nutrients from digested food. Millions of these natural organisms that are transmitted from the body of fecal waste. If pathogenic (disease-causing) microorganisms are present, they can be transferred as well. When the flow of contaminated feces, pathogenic bacteria, viruses and parasites can be introduced, which are a threat to the health of those who come in contact with water. Municipal and water supply in rural areas can transmit human diseases such as cholera (Vibrio cholerae), typhoid (Salmonella typhoid fever), dysentery (Shigella), salmonellosis (Salmonella) and gastroenteritis (Campylobacter jejuni, Escherichia coli, Giardia lamblia). The threat of such transmission of the disease becomes more serious as population density increases and more polluting wastewater tap water, carrying with him a man of intestinal pathogens. Instead of water to test directly for pathogens that can be difficult, expensive and even hazardous, researchers use indicator organisms to assess the possibility of fecal contamination. Fecal bacteria Escherichia coli, the family Enterobacteriacae, including E. coli, Citrobacter, Enterobacter and Klebsiella species are often used as indicators. These gram-negative bacillus (rod form bacteria) found in the digestive tract of all warm-blooded animals. Most are not pathogenic. However, as they are removed from feces, sometimes they are associated with pathogens such as bacteria Vibrio cholera or form of the virus hepatitis, which is located in the gastrointestinal tract. The total number of bacteria Escherichia sometimes used to check contamination of water too. These organisms are less accurate, as indicators of fecal contamination, because many of them can live and reproduce in soil and water, without the human body. If a large number of fecal bacteria are koliformnyh in the sample water flow, we can conclude that there has been recent faecal contamination, although not necessarily of human origin. Other intestinal bacteria such as streptococci and enterococci may have a stronger correlation with individual wastewater, but the indicator was determined that only for people. Cigarette fecal streptococci intestinal used to be that determine human compared to animal fecal contamination. But it is not though to be reliable because streptococci are not stored long in the open water environment, making it difficult to estimate the true concentration. Enterococci bacteria, it seems, always associated with human sewage and subsequent disease, but testing for these organisms due to the long and complicated procedure. Although they can not be directly related to the pollution of human sewage, fecal bacteria koliformnyh is often used to regulate surface waters for recreational use, shellfishing, and potability (ability to be safe consumption). Federal law provides maximun allowable number of these bacteria for various purposes. If fecal counts of intestinal high (more than 200 colonies per 100 ml water sample) in a river or stream is a great likelihood that pathogens are often present. Man swimming in that water is more likely to get sick from swallowing disease-causing organisms or pathogens from entering the body through cuts in the skin, nose, mouth or ears. Illnesses and diseases such as typhoid, hepatitis, gastroenteritis, dysentery and ear infections can be contracted in waters with high fecal bacteria counts of the intestinal group. Read more: