As a leading U.S. contractor in water, wastewater, and industrial water construction projects, we are committed to delivering maximum value to clients and their communities. MWH history dates to the early 19th century and features some of the world’s most groundbreaking water and wastewater innovations as well as specialization in client-focused collaborative delivery methods.
Work With UsExplore the innovative approaches and proven strategies that make MWH a leader in construction delivery excellence.
Learn More about our MethodsWater is critical for our lives, the earth’s ecosystems, and even our technology. With a focus on water, wastewater, and industrial water construction projects, MWH is at the center of that future. Our projects deliver clean water to millions, and we are proud to be building a better world together.
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whose effort and hard work deliver potable water to millions of people. Water and wastewater construction is a dynamic and rewarding industry with a multitude of exciting career paths to pursue. MWH is committed to fostering and investing in the growth of our employees through a culture of safety, opportunity, mentorship, and innovation. We work with you to accomplish your goals, advance your career, and have diverse jobsite experiences. We would love the opportunity to get to know you and your vision.
We know the incredible value of our trade partner’s expertise and their critical role in a project’s success. That’s why we strive to nurture positive long-term working relationships, communicate openly and often, and pay our invoices on time. We also aim for an inclusive future in construction by supporting minority-owned and women-owned enterprises.
At MWH, every project tells a story—and every story reflects our mission to Building a Better World. Our Foundations Newsletters are a gateway to the latest company news, inspiring initiatives, and the remarkable individuals driving our vision forward. From project breakthroughs to community impact, we celebrate the milestones that matter and the people who make them possible. Whether you're here to explore our innovations or connect with our culture, you'll find fresh perspectives and powerful progress right here.
We’re excited to share how things are moving forward with our partners at Obayashi and Jay-Dee. By combining their nationally recognized tunneling expertise with Methuen Construction’s civil and concrete know-how, we’re building a strong, coordinated approach to both the tunnel and drop shaft work.
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Slayden Constructors, in partnership with Jacobs Engineering, recently completed construction of the Robert A. Duff Water Treatment Plant expansion for the Medford Water Commission. The $78 million project is a major infrastructure upgrade that will provide long-term benefits to Medford and the greater Rogue Valley.
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The Inland Empire Utilities Agency (IEUA) is a regional municipal water district serving 242 square miles of western San Bernardino County with wastewater treatment, solids handling, and recycled water services. Its system supports multiple cities, unincorporated communities, and state facilities, and is overseen by a publicly elected five-member board.
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