HOW TO TREAT WATER WITH HIGH NTU (500 above) .

There is one Water Treatment Plant where the water source is from river flowing mountain. When it rains , the river will take along debris like trees, mud and others to its retention pond. The treatment plant is not capable to treat such dirty and cloudy water therefore has to be shutdown. This resulted the consumer will not get water for consumption. Is there an effective way or ready system to treat this kind of water.