One way water is treated is it is sterilize, or you can say purified. What most people use at home is boiling the water or just using hot water. To purify the water companies use certain filter or even rocks sometimes to filter the bad things out.
Answer: Coagulation and flocculation are often the first steps in water treatment. Chemicals with a positive charge are added to the water. The positive charge of these chemicals neutralizes the negative charge of dirt and other dissolved particles in the water.
