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ATTENTION: Subcontractors & Small Businesses

The Construction Manager at Risk (CMAR), McCarthy Building Companies, has created a website to provide the Kansas City metro area subcontractor and small business community with information about the Nelson WWTF project and how to get involved as the project moves forward.


Nelson Wastewater Treatment Facility Improvements Project

Nelson Complex 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 as well as some of the pump stations and mains 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.

2021 Nelson Wastewater Treatment Facility

Nelson Wastewater Treatment Facility 2021

What is happening on site? To find out, visit the page: Where & When

Open House 2 - held Thursday, October 6, 2022
  • To view a recording of the materials and information presented at the Open House 2, visit: ENGAGE

  • You can also sign up to receive email notifications by clicking the button to the right.

  • And if you have other questions, email us at:

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