Discussion : Coliform in Water

In the laboratory there is used Membrane Filter Method& Multiple Tube Method. Besides Membrane Filter Method is widely used In the laboratory, because this method is comparatively easy and less costly and time consuming for the determination of Total Coliform & Facal Coliform in the water sample than Multiple Tube Method. Direct result is found for Total Coliform & Facal Coliform in Membrane Filter Method..
The value of Total Coliform & Facal Coliform obtained from Membrane Filter Method& Multiple Tube Method should be identical for the same sample. The value of Total Coliform & Facal Coliform is equal to TNTC.
According to Bangladesh Environment Conservation rules (1997), drinking water standard for Total Coliform & Facal Coliform is 1 and 0 /l00ml respectively; according to WHO drinking water standard for Total Coliform & Facal Coliform is fully absent condition. In the sample Total Coliform & Facal Coliform concentration is not within acceptable range. So the water sample may be required additional treatment for highly Total Coliform & Facal Coliform contamination.

Tweet