Non-pathogenic natural gut bacteria monitored when testing water to indicate the possible presence of pathogenic bacteria
Gram-negative, nonspore-forming facultative rod that ferments lactose with gas formation with 48 hours at 35ºC Often an indicator organism for fecal contamination of water supplies Escherichia coli and Enterobacter are important members
Bacteria found in the intestinal tracts or feces of humans and other warm-blooded animals (called fecal coliform) Their presence in water indicates fecal pollution and potentially dangerous bacterial contamination by disease-causing organisms such as streptococcus
A specific class of bacteria found in the intestines of warm-blooded animals The presence of coliform in water indicates that the water is polluted and may contain disease-causing (pathogenic) microorganisms
A group of related bacteria whose presence in drinking water may indicate contamination by disease-causing microorganisms
A bacteria that may originate in the environment or in the digestive system of mammals If found in water, it alerts lab technicians that pathogens might be present
A group of bacteria used as an indicator of sanitary quality in water, as the organisms are usually present in large numbers in the digestive tracts of humans and other warm-blooded animals, and exposure to them in drinking water causes diseases such as cholera
A group of bacteria commonly found in the environment They are an indicator of potential contamination of water Adequate and appropriate disinfection effectively destroys coliform bacteria
A group of bacteria found in the intestines of warm-blooded animals (including humans) also in plants, soil, air and water Fecal coliforms are a specific class of coliforms which only inhabit the intestines of warm-blooded animals The presence of coliforms is an indication that the water is polluted and may contain pathogenic organisms
A group of related bacteria whose presence in water may indicate contamination by disease-causing microorganisms
a species of bacteria that are not harmful but which when found in water, may indicate the presence of disease-causing pathogens which thrive in the same environmental conditions as the coliform species