... 60-mL portions: 30 , 32 , 33 , 31 , 25; and 500-mL portions: 35 0, 34 0, 36 0, 37 0, 34 0. What is the number of coliforms per 100 mL of the sample?Solution: Using the criterion of 20 to 80 as the most ... 1 and 3, 1, 1. Therefore, For reading 2, 1, 1, MPN = 9 = MPN1; for reading 3, 1, 1, MPN = 14 = MPN2 MPN 90 fecal coliforms/100 mL Ans=Average count for the 60-mL portions 30 32 33 31 25++++5 ... case of taste,there should be no noticeable odor at the point of use of any drinking water. Thesecondary standard for odor is 3. Fresh wastewater odor is less disagreeable than stale wastewater...