Where does Charleston Water System water come from?
We treat water from the Edisto River and the Bushy Park Reservoir, both of which are surface water sources. The water is treated at our Hanahan Water Treatment Plant, which is permitted to treat up to 118 million gallons per day (mgd). Back to top How is my water disinfected? Charleston Water System uses a combination of chlorine and chloramines (a chemical formed by combining ammonia and chlorine) to kill harmful bacteria and viruses in the water. Chloramines are more stable than chlorine in the water distribution system, and chloramine residuals help maintain consistent water quality. The amount of chemicals is carefully measured to the lowest level needed to keep the water free of disease-causing organisms. >Learn more about the water treatment process Back to top Sometimes my water looks “milky white.” What causes this and is it safe to drink? This is a temporary and harmless condition called aeration, which is air dissolved in water. If you let a glass of water stand for several m
