Total coliform and E. coli are two types of bacteria commonly found in water samples. While both bacteria can indicate the presence of contamination, there are some key differences between them.
Definitions
Total coliform bacteria are a group of bacteria that are naturally present in the environment. They are found in soil, water, and vegetation. Total coliform bacteria are not always harmful, but their presence in water samples can indicate that the water has been contaminated.
E. Coli is a type of coliform bacteria that is found in the feces of humans and animals. E. Coli is a more specific indicator of fecal contamination than total coliform bacteria. The presence of E. Coli in water samples indicates that the water has been contaminated with sewage or other waste that contains fecal matter.
Comparison of Total Coliform and E. Coli
The following table compares total coliform and E. Coli bacteria:
| Characteristic | Total Coliform | E. Coli |
| Source | Soil, water, vegetation | Feces of humans and animals |
| Indicator of contamination | Sewage or other waste | Sewage or other waste that contains fecal matter |
| Harmful? | Not always | Yes |
Implications for Water Quality
The presence of total coliform or E. Coli in water samples can indicate that the water is contaminated and unsafe to drink. Water that is contaminated with sewage or other waste can contain harmful bacteria, viruses, and parasites that can cause illness.
It is important to note that not all total coliform bacteria are harmful, but require treatment to ensure that water is safe to use. Alternatively, the presence of E. Coli in water samples is always a concern, as it indicates that the water has been contaminated with fecal matter.
Conclusion
Total coliform and E. Coli are two types of bacteria that are commonly found in water samples. While both bacteria can indicate the presence of contamination, E. Coli is a more specific indicator of fecal contamination. The presence of either total coliform or E. Coli in water samples can indicate that the water is unsafe to drink.
We have a variety of processes to remove bacteria from water. If you are interested in treatment options, call JKA Well Drilling & Pumps at 360-794-7300 or email service@jkawelldrilling.com to set up a consultation.
