Presumptive count includes -
Presumptive coliform count estimates the most probable number of COLIFORM organisms (and not only E.coli) in 100 ml of water. It is done with the help of McConkey's Lactose Bile Salt Broth with bromcresol purple as an indicator. Park's Textbook of Preventive and Social Medicine, 25th edition, Page No. 786
No E. Coli
Coliform but not only E. Coli
Gram ne gative bacilli
Any bacteria
Environment and health