Regular Members


AECOM is the world’s trusted infrastructure consulting firm, delivering professional services throughout the project life cycle—from planning, design, and engineering to program and construction management. On projects spanning transportation, buildings, water, new energy, and the environment, our public- and private-sector clients trust us to solve their most complex challenges. Our teams are driven by a common purpose to deliver a better world through our unrivaled technical expertise and innovation, a culture of equity, diversity, and inclusion, and a commitment to environmental, social, and governance priorities. AECOM is a Fortune 500 firm and its Professional Services business had revenue of $13.3 billion in fiscal year 2021. See how we are delivering sustainable legacies for generations to come at and @AECOM.


Arcadis is the leading global design and consultancy firm for natural and built assets. Applying our deep market sector insights and collective design, consultancy, engineering, project, and management services, we work in partnership with our clients to deliver exceptional and sustainable outcomes safely and consistently throughout the life cycle of their assets. We are 27,000 people active in over 70 countries that generate more than $3.8 billion in revenues. Our global operations and diverse experience mean we apply collective wisdom to every challenge big and small. In this way, our experience protecting the Dutch coast for generations is applied to securing New York’s flood defenses today. So, whatever your challenge, our teams bring the necessary perspective to provide the right answers now and in the future. Arcadis. Improving quality of life.

Black & Veatch

Black & Veatch is a 100% employee-owned global engineering, procurement, consulting, and construction company with a more than 100-year track record of innovation in sustainable infrastructure. Since 1915, we have helped our clients improve the lives of people around the world by addressing the resilience and reliability of our most important infrastructure assets.

Brown and Caldwell

Headquartered in Walnut Creek, CA, Brown and Caldwell is a full-service environmental engineering and construction firm with 52 offices and 1,800+ professionals throughout North America. For more than 75 years, our creative solutions have helped municipal, federal, and private agencies successfully overcome their most challenging water and environmental obstacles. As an employee-owned company, Brown and Caldwell is passionate about meeting our clients’ needs and making a difference for our environment and communities.

Burns & McDonnell

Burns & McDonnell’s passion started with water. For more than 120 years, our Water Practice solutions have evolved with the ever-changing needs of owners across the country. Now, with more than 6,000 planners, engineers, architects, and construction professionals, we deliver practical, successful, and award-winning projects. The critical nature of water and wastewater infrastructure emphasizes the need for experienced design and construction teams to deliver projects on time and within budget. Ranked in Engineering News-Record as an industry-leading design-build firm, Burns & McDonnell is focused on getting the job done. We provide the experience and knowledge to help clients realize the benefits of collaborative delivery, including accelerated schedules, early cost certainty, and simplified contracts. Learn more about how we deliver success at

CDM Smith

CDM Smith is a global engineering and construction firm with proven expertise and experience in providing design-build and other collaborative delivery solutions. Our unique integrated team of engineers and constructors—together under one roof—partner with project owners to obtain better results against scope, budget, and schedule. We employ innovative technologies and approaches such as virtual design and construction, sustainable development concepts, and complex collaborative delivery mechanisms to provide enduring value across the entire project lifecycle.

Garney Construction

Garney Construction is a national leader in water and wastewater construction. Since 1961, we’ve focused on building water and wastewater systems of all sizes for municipal, federal, industrial, and private clients. Garney is 100% employee owned with more than 1,700 employee-owners located across the United States. We specialize in collaborative project delivery solutions, including design-build and CMAR, for our clients nationwide. Over the past two decades, Garney has constructed 500 collaborative delivery projects totaling $8 billion in construction value.


Serving clients throughout the Western Hemisphere, Haskell provides complete planning, architectural, engineering, construction, program management, real estate, financing, and facility management services on a single-responsibility basis. The company’s expertise spans industrial, commercial, institutional, public, and civil infrastructure projects. Corporate and institutional clients, developers, and public agencies repeatedly select Haskell on the basis of its consistent record of performance excellence.


At HDR, we specialize in engineering, architecture, environmental, and construction services. While we are most well known for adding beauty and structure to communities through high-performance buildings and smart water/wastewater infrastructure, we provide much more than that. As experts in integrated delivery methods, we create opportunities for our clients to engage with design and construction professionals in a variety of ways by customizing delivery methods to meet their needs. Our multidisciplinary teams also include scientists, economists, builders, analysts, and artists. Our employees, working in 225 locations around the world, push open the doors to what’s possible each and every day.


At Jacobs, we're challenging today to reinvent tomorrow by solving the world's most critical water and wastewater needs for thriving cities, resilient environments, mission-critical outcomes, and operational advancement. We turn abstract ideas into realities that transform the world for good, backed by our $6.2 billion collaborative delivery portfolio and successful completion of over 150 water and wastewater collaborative delivery projects. With $14 billion in revenue and a talent force of approximately 55,000, Jacobs provides a full spectrum of professional services including consulting, design, permitting, startup and commissioning, construction, and operations & maintenance. Visit and connect with Jacobs on Facebook, Instagram, LinkedIn and Twitter.


Excellence. It is the foundation of everything we do. What began in 1884 with two hardworking brothers has grown into a Fortune 500 construction, mining, and engineering powerhouse. Kiewit’s ethical, forward-thinking workforce continues to build upon the company’s reputation of safe, high-quality engineering. Consistently ranked among the top five of the Engineering News-Record Top 400 Contractors, our company is a leader in a variety of market sectors throughout North America and, most recently, Australia. As an employee-owned company, Kiewit’s assets are managed by the people who know our work best. For us, business is personal. As our own stakeholders, we are invested in every project we take on. We continuously strive to build high-quality work at the lowest cost. Our philosophy on safety is simple: Nobody Gets Hurt. Knowing that one lapse in judgment can lead to catastrophic events, the safety of the men and women on our job sites and the community that surrounds our projects is always first. Kiewit never stands still. Just as our founders relentlessly chased their dream, we continue to chase new and exciting opportunities.

McCarthy Building Companies, Inc.

McCarthy Building Companies, Inc. is a premier national builder committed to supporting and improving the critical infrastructure that connects our communities and keeps them running smoothly. From early in the design phase, through construction and startup, our national Water Services team provides general contracting, construction management, program management, and design-build services for water treatment, water reclamation, and wastewater treatment projects. Delivering an exceptional experience for our clients while ensuring superior quality and safety embedded in every aspect of our work is what drives us.


MWH is a leading global project delivery company with a focus on water. With the ultimate goal of delivering maximum value to clients and their local communities, MWH provides high-value, start-to-finish preconstruction, construction, and construction management services in a full range of project delivery methods. Incorporating industry-leading preconstruction services and safety practices, the company’s multi-disciplined professional constructors expertly deliver a wide range of projects, including new facilities, infrastructure improvement/expansion, and capital construction services. Our experience with both traditional and collaborative delivery models underscores our creative, client-by-client approach to delivering projects safely and economically, with the least amount of risk and the highest operational excellence. With a 200-year legacy in the water and wastewater industry, with approximately 800 employees worldwide, MWH currently includes Slayden in the Northwestern United States, headquartered in Oregon, and Methuen Construction in the Northeastern United States, headquartered in New Hampshire. MWH has completed more than $5 billion in water/wastewater infrastructure, making MWH ENR’s #1 wastewater contractor in the United States in 2021.


Parsons (NYSE: PSN) is a leading technology firm driving the future of defense, intelligence, and critical infrastructure. By combining unique technologies with deep domain expertise across cybersecurity, missile defense, space, connected infrastructure, and smart cities, we're providing tomorrow's solutions today. With a history of disruption beginning in 1944, we apply our distinct perspective to help our customers confront the issues of tomorrow in every domain—land, sea, air, space, and cyber. Our range of capabilities and our global network of resources lets us layer and integrate solutions to respond to any challenge with unmatched agility. In a time of rapid change, we see infinite sources of inspiration to fuel our creativity and enable the innovation necessary to accomplish our quest of delivering a better world. For more about Parsons, visit us at and follow our quest on FacebookInstagramTwitter, and LinkedIn.


Ramboll’s experts address global water and climate challenges by working across the water cycle from water resources and supply, processing and treatment, to sewerage and discharge, including infrastructure. We work with municipalities, utilities, and industrial clients, drawing on our multidisciplinary expertise to create innovative, sustainable, and livable solutions. We specialize in climate adaptation, wastewater, water, and water & wastewater networks.


Communities are fundamental. Whether around the corner or across the globe, they provide a foundation, a sense of place and of belonging. That's why at Stantec, we always design with community in mind. We care about the communities we serve—because they're our communities too. This allows us to assess what's needed and connect our expertise, to appreciate nuances and envision what's never been considered, to bring together diverse perspectives so we can collaborate toward a shared success. We're designers, engineers, scientists, and project managers, innovating together at the intersection of community, creativity, and client relationships. Balancing these priorities results in projects that advance the quality of life in communities across the globe. Stantec trades on the TSX and the NYSE under the symbol STN. Visit us at or find us on social media.

Sundt Construction, Inc.

Sundt Construction, Inc. was founded in 1890. Sundt employs 2,000+ employees and is distinguished by its diverse capabilities and experience, unique ESOP employee-ownership culture and depth of self-perform expertise in more than 10 major trades. Since 1948, Sundt has been a trusted builder for water and wastewater treatment, with more than 60 plants in the last 15 years. Today, we remain at the forefront of treatment technologies, delivering advanced water treatment facilities for indirect potable reuse and zero liquid discharge (ZLD). Whether expanding or improving facilities, or constructing new ones, we provide cost certainty and minimal disruptions to operations. Our value engineering and constructability recommendations maximize construction dollars for rate payers. We find ways to expedite schedules to deliver capacity sooner. Our collaborative approach to project delivery is based on meeting client needs, including options for CMAR, design-build, and CM/GC delivery. We have experience with several advanced technologies, including filtration, membrane treatment (including reverse osmosis), desalination, advanced oxidation, brine recovery, and zero liquid discharge (ZLD).

Tesco Controls

As one of the largest system integrators in North America devoted to water and wastewater, and one of Transparency Market Research's Top 10 global water/wastewater management and operational control companies, Tesco Controls is distinctly qualified to design and build advanced control systems for the industry. We are a 100% employee-owned, CSIA®-certified, full-service company with 45+ years of experience in the design and implementation of control system solutions required to automate water treatment, distribution, and related processes. Tesco's end-to-end, at-risk solutions ensure continuity and successful outcomes. Turn-key, vertically integrated solutions are developed in house, including system design, EI&C engineering, programming, custom fabrication, and field service, to ensure maximum communication, responsiveness, and quality control. This gives Tesco the ability to assume some schedule and process performance risk for design-build projects. From greenfield water/wastewater projects to complex legacy migrations, we are dedicated to the design-build and collaborative delivery methodologies, which support our fully integrated approach to integration projects. Tesco is also a UL-rated manufacturer of custom enclosures and instrumentation, and an original equipment manufacturer (OEM) for most major equipment suppliers, affording our clients solutions tailored to their needs, aesthetic, budget, and schedule.


Since 1919, Victaulic has been the originator and world's leading producer of mechanical pipe joining solutions. Used in the most demanding markets, Victaulic innovative piping technologies and services put people to work faster while increasing safety, ensuring reliability, and maximizing efficiency. The company has 12 manufacturing facilities and 31 branches worldwide with 3,600 employees who speak 43 languages across the globe. With over 1,900 patents, Victaulic solutions are at work in more than 140 countries across diverse business lines including oil and gas, chemical, mining, power generation, water and wastewater treatment, military and marine, as well as commercial building and fire protection.

Walsh Group

The Walsh Group (Walsh Construction and Archer Western), founded in 1898, is a family-owned business in its fourth generation of leadership providing general contracting and collaborative delivery services including progressive design-build and construction management at-risk. The Walsh Group is ranked by Engineering News-Record as the nation’s largest water and desalination treatment builder, second largest wastewater treatment builder, and third largest water supply builder. Walsh consistently delivers a safety-minded culture, forward-thinking water treatment technologies, and collaborative delivery solutions for the most complex water and wastewater infrastructure challenges.