The Carlisle Region Water Pollution Control Facility is a 7.0 MGD Wastewater Treatment Plant. The nine man staff is responsible for the operation and maintenance of all wastewater treatment processes, equipment, grounds and buildings at the site. Staff also maintains and operates five pumping stations throughout the collection system.
The primary function of the facility is to treat the wastewater received from the collection system to meet parameter limits that are mandated by the Pennsylvania State Department of Environmental Protection through a National Pollutant Discharge Elimination System (NPDES) permit. Wastewater received at the plant is subjected to treatment processes that include: (1) the settlement of solid matter, (2) the degradation of organic impurities through biological and chemical processes and, (3) filtration and chlorination.
The effluent is discharged into the Conodoguinet Creek while solid matter is condensed into a biosolids that is stabilized through the addition of lime. Once stabilized, the biosolids are applied to farm fields for agricultural utilization. From 2007 to 2012, a construction upgrade project was undertaken and completed. This project upgrade was necessary to comply with the Chesapeake Bay Initiative with a total cost of $20,000,000 for planning, engineering design and construction. Under regulations of the Pennsylvania State Department of Environmental Protection and the Federal Environmental Protection Agency, all treatment processes are monitored to ensure that discharged substances meet established pollutant concentration standards. As of December 2012, the facility has operated for 219 consecutive months without a permit violation.