The sanitary sewage collection system covers approximately 22 square miles. It consists of a network of:
- Eight pump stations
- More than 110 miles of underground piping
- More than 2,400 manholes
The collection system is divided into two main drainage basins. Approximately 50% of Belton's wastewater flows to and is treated at the Little Blue Valley Sewer District
. The remaining flow is conveyed to Belton's wastewater treatment facility, where it is treated following guidelines and limits imposed by the Missouri Department of Natural Resources
(MDNR) and the United States Environmental Protection Agency
It is the current goal of the Water Services Division to clean each sewer line in the collection system every three years.
The Belton Wastewater Treatment Facility uses an activated sludge process operating in the extended aeration mode. It consists primarily of an aeration basin and three final clarifiers, with additional equipment designed to remove grit and large solids. Sludge is dewatered using two belt filter presses and then hauled to a landfill in the Kansas City metro area.