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 11 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
