The City of Bellevue has been operating a wastewater collection system since 18**. The City’s original Wastewater Treatment Plant (WWTP) was constructed in 1961. This was the beginning of the Wastewater Division of Public Works. The WWTP provided primary treatment with basic solids separation and clarification, a major upgrade to the plant happed in 1977 and included secondary treatment, final clarifiers, chlorination facilities, and sludge processing and dewatering. The plant was located just north of the highway 370 and west of the Bellevue Bridge. An estimated 10% of the City’s wastewater flows had been treated by this plant, or close to 3,175 homes. In 2010 the City determined that the cost for upgrading the facility again was not justifiable, and demolition was scheduled. The flow from the closed WWTP was collected and diverted to the Omaha Papio WWTP.

The City essentially has two wastewater primary collections systems, one that serves the east half and the other the west. These collection networks are dived into sanitary sewer basins that collect along the Big Papillion Creek, and either flow to the Omaha Papio Wastewater Treatment Plant or the Omaha Missouri Wastewater Treatment Plant. The City of Bellevue is then billed by the City of Omaha for the processing and treatment of its wastewater.

The City's wastewater collection system is considered a sanitary sewer system only and is not a combined sanitary/storm sewer system. That means the flows conveyed in the wastewater collection system are derived from residential, commercial and industrial wastewater sources. Storm water from street runoff, roof drains and other similar sources are not directed to the wastewater collection system, but go into separate facilities called the storm water system.