The existing treatment plant is an activated sludge system that began operations in 1956. It was designed with an average capacity of 4.75 million gallons per day (mgd) and a maximum capacity of 8.5 mgd. In 1975, the treatment plant was expanded to a 10.5 mgd average capacity and 25 mgd maximum capacity. In 1989 the utility added a sludge thickening and dewatering facility, a dechlorination facility and a maintenance building.
Currently, treatment is at a level of 6.5 mgd. The combined capacity/storm sewer system is made up of 18 lift stations and approximately 52 miles of sewer lines ranging in size from 6" to 54" inches in diameter. Primary treatment is provided by settling tanks, secondary treatment by aeration ad final settling tanks and chlorination and dechlorination. The sludge is anaerobically digested, pressed and applied to area farmland.