Nelson Wastewater Treatment Facility Improvements Project
Notice: (updated 2026-04-15)
The Nelson team will be performing overnight work the week of April 20th, weather permitting. Overnight work is necessary as these tasks need to be performed when flow to the facility is low. Sewer service will not be interrupted.
If you detect odors we would like to know so we can address them. You can fill out an odor complaint form by clicking on the “Odor Complaint Form” button. This form notifies Operations & Maintenance staff and top leadership directly.
Top 6 Construction Activities taking place at Nelson in 2026
Top 6 Activities at Nelson in 2026
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Commissioning of the Filtration and Disinfection Buildings
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Removal of old Clarifiers and Disinfection Facilities
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Excavation of Clarifiers
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Excavation and concrete for Digester Control Building and set steel lid Digester #3
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Rehabilitation of Line Maintenance Administration Building
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Complete concrete at Headworks and
Biological Nutrient Removal Basin
Nelson Wastewater Treatment Facility
The Nelson Wastewater Treatment Facility (WWTF) is Johnson County’s oldest treatment facility, and its service area is comprised of two main tributary basins - Turkey Creek (SMTC) and Mission Main (MTM1).
The service area, located in northeast Johnson County, is approximately bounded by 47th Street to the north, 95th Street to the south, Pflumm Road to the west, and State Line Road to the east. Metcalf Avenue roughly divides the two basins, with Turkey Creek to the west and Mission Main to the east.
The improvements project will upgrade the treatment facility in order to address aged and deteriorating infrastructure and to comply with new regulatory requirements.
Information pertaining to the project, including schedules and activities, will be available on this site and updated as the project progresses.
Nelson WWTF - Design Phase Rendering
