This $110M Construction Manager-at-Risk (CMAR) project was awarded to MWH by the North Texas Municipal Water District. It consists of four phases and requires the coordination of three separate design teams (Jacobs, Carollo, and HDR).
In late 2021, MWH began structural and mechanical improvements at the Wylie Water Treatment Plant in addition to converting the facility’s current treatment process to a biologically active filtration (BAF) process. BAF is an advanced water treatment process that provides numerous advantages, from improved natural organic matter removal to reduced disinfection byproduct formation. Not only does BAF reduce tastes and odors, but it also mitigates regrowth issues, facilitating better water quality for the community for years to come.
The project’s structural and mechanical improvements include the replacement of roofs and overflow structures for two 240-foot diameter concrete clearwells; constructing magnetic flow meter vaults, new water pumps, and a calcium thiosulfate system; and installing large diameter pipes and valves. Since the summer of 2022, our team has completed the clearwell roof slab placement in addition to the two concrete meter vaults and 550 LF of chemical trench.
BAF improvements are currently underway, including installation of large-diameter underground piping and valves, splitter structures, chlorine contact basins, and clearwells. The project is currently on track to achieve final completion in 2025.
The Bull Run Filtration Facility in Gresham, Oregon has earned the Envision Platinum Award, the highest honor from the Institute for Sustainable Infrastructure, recognizing its exceptional commitment to sustainability, environmental protection, and long‑term community benefit. As a major investment in the region’s drinking water system, the project will improve water quality, enhance reliability, and protect the Bull Run Watershed for future generations. The award highlights strong collaboration among the Portland Water Bureau, design teams, construction partners—including the MWH‑Kiewit joint venture—and community stakeholders, as well as leadership in climate resilience, resource efficiency, and workforce equity.
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This digital thread ensures that design engineers, construction teams, operations staff, and City leadership all work from the same validated foundation of information. In an environment as utility-dense as a 50-year-old wastewater treatment plant, this visibility is essential.
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In January, MWH officially launched its Women in Construction chapter—an exciting milestone for the company and a meaningful step forward for representation across our jobsites, offices, and leadership teams. The launch reflects a growing commitment to elevating the voices and experiences of women who contribute to every part of our work.
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