Nall Avenue Pump Station & Reservoir


Johnson County Water District No. 1

Contract Type

General Contracting


54 MGD

Construction of a new 2-story, 54 MG/d pump station and a 6 MG, below-grade concrete water storage reservoir, a new bioretention pond and outfall structure. Pump station includes three 800 hp and three 150 hp horizontal split-case centrifugal high service pumps with AFD’s.

From the early concept stage of this design-bid-build project through its completion, collaboration was inclusive of all stakeholders. This collaboration resulted in a successful project. The transition of engineering firms between the early concept phase and the start of detailed design was seamless and included coordination on the most complex aspect of the project that had been initiated during the concept stage. The project concept study involved development of site renderings and a scale model of the site that were presented to the community at City Hall, which initiated successful public relations that continued throughout design and construction.

Through collaborative efforts among the owner, engineer and contractor, the final construction value saved the client over 7.14%. Change orders were proactively managed and were limited to 1.3% of the project’s value. The contractor’s significant efforts to address conflicts and implement creative and effective solutions throughout construction was critical to the success of both the budget and the schedule. The work was substantially completed in time for the owner’s peak summer water demand.