What is activated sludge and how does it clean the wastewater?
“Activated sludge” is a mass of microorganisms that digest organic material in wastewater. The microorganisms clean the wastewater by digesting organic materials and other contaminants. Wastewater remains in aeration basins for about three hours to allow time for the microorganisms to grow and consume the bacteria.

How does grease clog the sewer system?
Grease hardens as it cools when poured down a drain. Even when mixed with hot water, the grease will separate out and settle in plumbing systems and sewer lines. Pouring grease down your kitchen sink costs Charleston Water System thousands of dollars per year in maintenance fees to clean the sewer system. All fats, oils, and the like should be poured into containers for disposal.

Have a question that's not answered here? Submit your question!