Earlier this year, the City of Saco selected MWH as the Construction Manager At-Risk for the $50M Wa…Read More
We are dedicated to delivering maximum value to clients and their local communities.
MWH is a leading water and wastewater treatment-focused general contractor with experience in both municipal and industrial applications. Whether it’s building new facilities, improving infrastructure, or expanding existing systems, MWH has the expertise to successfully fulfill a wide range of client needs. Our experience with a full range of project delivery methods ensures that we can tailor our approach to meet the unique needs of each project.
Founded by some of the world’s leading innovators…
in water and wastewater technology with roots going back to 1820, we continue to be at the forefront of advancements in treatment processes and project delivery.
MWH has an expansive nationwide presence, including Slayden Constructors in the Pacific Northwest and Methuen Construction on the East Coast.
We are rooted in our history.
In the 19th century, we revolutionized clean water at the turn of a tap, saving countless lives during a deadly cholera outbreak. In the 20th century, we introduced some of the first sewage processing machinery of its kind. In the 21st century, we are among the first to bring Thermal Hydrolysis technology to U.S. soil. For two centuries we have established ourselves as trailblazers in water and wastewater technology and we will continue that legacy. Read about more about our fascinating, 200 year old history below.