Respuesta :
When testing waterways for contamination with fecal matter E.coli is often used as an indicator species.
Define pathogen.
Virulence, the degree to which the disease symptoms are severe, is used to describe a pathogen, which is an organism that causes disease in its host. Viruses, bacteria, unicellular and multicellular eukaryotes, as well as other taxonomically varied organisms, make up the diverse group of organisms known as pathogens.
Bacteria known as Escherichia coli, or simply E. coli, are present in the environment, food, and intestines of both humans and animals. There are many different types of E. coli bacterium. While the majority of E. coli strains are not harmful, there are those that can. Some strains of E. coli can cause diarrhea, while others can cause pneumonia, respiratory disorders like flu, and urinary tract infections, among other illnesses.
Stool from people and animals can contaminate groundwater and surface water, including streams, rivers, lakes, and water used for crop irrigation. Even though municipal water supplies use ozone, UV light, or chlorine to kill E. coli, certain E. coli outbreaks have been connected to tainted water supplies.
Private water wells are more of a worry because many of them lack a means of water sanitization. The likelihood of polluted water is highest in rural areas. Some people have contracted E. coli after swimming in lakes or pools that were tainted with feces.
To know more about E.coli use link below:
https://brainly.com/question/6390757
#SPJ4
