Home » water pollution mcqs » The high amount of E. coli in water is the indicator of Water Pollution MCQs The high amount of E. coli in water is the indicator of September 21, 2022 9 Views Q. The high amount of E. coli in water is the indicator of Hardness of waterIndustrial pollutionSewage pollutionPresence of chlorine in water Answer: Sewage pollution
