From the table to reduce the turbidity of the water by the use of alum by the way Jarvis to pour the 200 NTU turbidity value represents. It found that for the first time made the appropriate pH value the pH is equal to 8 and reduce turbidity. 5.93. In the second, made the appropriate pH value the pH is equal to 6 and reduce turbidity 5.25. In the 3rd Make the selected value, the appropriate pH pH is equal to 8 and can reduce turbidity 2.95. When run, the average pH value found suitable alum reacts best pH is equal to 7.33 and can reduce turbidity has reached 4.71 average color charge equal to 2.5 units.
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