How to reduce the water turbidity problem quickly?

I am analysing different technical options for quickly solving the water turbidity issue. If some kind of a natural disaster happens, high turbidity may occur in water resources like springs and wells - making the water non-potable . Have you ever used a technique to reduce high water turbidity? If yes, please share the technique and your feedback about it. Representatives from Instrument manufacturing company's can also share their product details with detailed specifications (for reducing water turbidity quickly). It will help me in my analysing study. Thank you in advance.