The water flows from the trickling filters to the final clarifying tanks for more settling out of particles.

The flow then proceeds through four gravity rapid sand filters. Each filter consists of an eight-inch sand bed.

The sand bed retains solid particles and as the sand filter reaches its capacity, a traveling bridge moves along the filter and vacuums the solid particles away from the sand.

All of these processes remove many of the microorganisms from the water, however some may remain, and they may be disease-causing. These remaining pathogens are killed by exposure to chlorine in the chlorine contact tank.

From the chlorine contact tank, the now disinfected water flows by gravity through a 48-inch effluent line to the Cassadaga Creek.