A bacteriological laboratory studies the quality of drinking water. The microbial count of the water sample is approximately 100. What microorganisms were taken into account during the analysis?

Answer options

1. Enteropathogenic bacteria and viruses
2. All the bacteria grown on the nutrient medium
3. Bacteria pathogenic for human and animals
4. Bacteria of the Escherichia coli group
5. Conditionally pathogenic microorganisms