--- title: Tomahawk Creek WTF Expansion | Project Spotlight image: https://info.watercollaborativedelivery.org/hubfs/Tomahawk%202021%20Sept%20-%20Effluent%20Being%20Sent%20to%20the%20Creek%20(Temp%20Pumps%20Shutoff).jpg --- [![WCDA_horz_tag_RGB](https://info.watercollaborativedelivery.org/hs-fs/hubfs/WCDA_horz_tag_RGB.png?width=250&height=129&name=WCDA_horz_tag_RGB.png "WCDA_horz_tag_RGB")](https://www.watercollaborativedelivery.org) # TOMAHAWK CREEK WASTEWATER TREATMENT FACILITY EXPANSION **Construction Management at-Risk ****McCarthy Building Companies** Aging infrastructure, more stringent effluent limits, and the need to treat increased flow from population in surrounding communities prompted this largest ever capital project for Johnson County. ![Tomahawk 2021 Sept - Effluent Being Sent to the Creek (Temp Pumps Shutoff)](https://info.watercollaborativedelivery.org/hubfs/Tomahawk%202021%20Sept%20-%20Effluent%20Being%20Sent%20to%20the%20Creek%20(Temp%20Pumps%20Shutoff).jpg) ## **Download this project spotlight to learn more: ** - What factors led JCW to select CMAR - The complex challenges and innovative solutions - How this project stayed on schedule and on budget Copyright © 2026 Water Collaborative Delivery Association [Privacy Policy](https://watercollaborativedelivery.org/privacy-policy/)     [mailto:info@WaterCollaborativeDelivery.org](mailto:info@WaterCollaborativeDelivery.org)