Subsidiary Companies

MWH Constructors is able to provide diverse project delivery and infrastructure solutions for our customers through the combined products and services of our subsidiary companies.

Slayden Constructors, Inc.

Slayden Constructors is a leader in the construction industry. Founded in 1984, and based in Stayton, Oregon, Slayden is built on strong values, hard work and a commitment to getting the job done right. The success of our company is best expressed through our efforts in providing a safe work place with respected employees and a committed management team. Our team approach to all our construction projects has provided steady growth in work volume, successful expansion of key management personnel, and an extensive list of satisfied clients for more than 25 years.

MWH Treatment, Ltd.

Working primarily within the United Kingdom, MWH Treatment is the specialist constructor arm of the business; providing long-term solutions and assured delivery through the application of our skills in programme delivery, design and build, construction, project and construction management, commissioning, data collection, and operations and asset management. We combine a clear understanding of users’ requirements and legislation with local knowledge and appropriate international expertise to add value in all we do.

Information on MWH Treatment’s Joint Ventures can be found here.


Manufactured Equipment, Products & Solutions (meps)

meps is a Clean Technology provider with a focus on the Water & Wastewater sector. With one of the strongest technology portfolios in the market, we provide support to every Regulated Water Company in the UK across a number of product platforms. meps is a joint venture born through collaboration between the heritage brands of MWH Treatment and EPS Group; bringing over 150 years of service experience in support of your needs.