Microorganisms in water

Microorganisms in water
Water microbiology is concerned with the microorganisms that live in water, or can be transported from one habitat to another by water.
The important characterizes of soil microorganisms are:
1- Water can support the growth of many types of microorganisms. For example, the chemical activities of certain strains of yeasts provide us with bread. As well, the growth of some bacteria in contaminated water can help digest and degrade the poisons from the water.
2- The presence of other disease causing microbes in water is unhealthy and even life threatening and can be fatal. For example, bacteria that live in the intestinal tracts of humans and other warm blooded animals, such as Escherichia coli, Salmonella, Shigella, and Vibrio, can contaminate water if feces enters the water.
3- Another group of microbes of concern in water microbiology are protozoa. The two protozoa of the most concern are Giardia and Cryptosporidium. They live normally in the intestinal tract of animals such as beaver and deer.