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County Manager's Office

Phone: 913-715-0725

111 S. Cherry St., Suite 3300, Olathe, KS 66061

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Tomahawk Creek Wastewater Treatment Facility Project

Johnson County Wastewater is proceeding with detailed design for improvements and an expansion of the Tomahawk Creek wastewater treatment facility in Leawood. The expansion will allow the county to treat all wastewater flow on site and will provide the most cost-effective, long-term solution for JCW customers and will improve treatment operations by applying cutting-edge technologies. Visit the project website to learn more.

Date authorized: July 31, 2014 (project definition); May 5, 2016 (design)

Project authorization: $280 million (2015 dollars)

Delivery method: Construction manager at risk (CMAR)

Design firm: Black & Veatch/HDR Engineers

Contractor: McCarthy Building Companies

Completion date: April 30, 2018 (design); June 1, 2022 (construction)

>> Project Website


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