Regular and Allied Members




AECOM is built to deliver a better world. We design, build, finance, and operate infrastructure assets for governments, businesses, and organizations in more than 150 countries. As a fully integrated firm, we connect knowledge and experience across our global network of experts to help clients solve their most complex challenges. From high-performance buildings and infrastructure, to resilient communities and environments, to stable and secure nations, our work is transformative, differentiated, and vital. A Fortune 500 firm, AECOM had revenue of approximately $17.4 billion during fiscal year 2016. See how we deliver what others can only imagine 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 is an employee-owned, global leader in building critical human infrastructure in energy, water, oil & gas, telecommunications, and government services. Since 1915, we have helped our clients improve the lives of people in more than 100 countries through consulting, engineering, procurement, construction, operations, and program management. Our revenues in 2015 were US$3 billion.

Our water business helps communities and clients worldwide with innovative use of water resources, including treatment, conveyance infrastructure, water reuse systems, desalination, dams and hydro power, irrigation, flood management, and aquifer storage and recovery.


Brown and Caldwell (BC) is a nationally recognized, full-service firm with more than 1,500+ employees and 69 years of experience delivering innovative, economical solutions to the environmental, water, and wastewater challenges confronting our clients. To meet our clients’ increasing need for innovation and custom solutions, BC provides integrated project delivery services including: General Contractor, Design-Build, Construction Management At-Risk, design for Design-Build, Operations and Maintenance (O&M), Owner’s Advisor, or a related role.

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 as an industry-leading design-build firm (Engineering News-Record), 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


Carollo Engineers is an environmental engineering firm specializing in the planning, design, and construction of water and wastewater facilities. From a single office in 1933, Carollo has grown to more than 900 people in 40 offices throughout the United States. Carollo is consistently ranked in Engineering News-Record’s (ENR) top 100 design firms and in 2016, ENR selected Carollo as its Top California Design Firm. Carollo’s employees continually strive to emulate the company’s mission statement of being: “The BEST water consulting firm in the United States.”

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 alternative delivery mechanisms to provide enduring value across the entire project life cycle.

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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.

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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.

CH2M is now Jacobs leads the professional services industry delivering sustainable solutions benefiting societal, environmental, and economic outcomes with the development of infrastructure and industry. In this way, CH2Mers make a positive difference providing consulting, design, engineering, and management services for clients in water; environment and nuclear; transportation; energy and industrial markets, from iconic infrastructure to global programs like the Olympic Games. Ranked among the World’s Most Ethical Companies and top firms in environmental consulting and program management, CH2M in 2016 became the first professional services firm honored with the World Environment Center Gold Medal Award for efforts advancing sustainable development.

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.

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OBG empathizes with clients who are faced with the challenges of securing ample water supplies, treating the water to stringent drinking water standards, and delivering that water through an aging distribution system, all at a reasonable cost. Our team uses this empathy to drive creative, client-focused solutions whether the need be transforming former quarries into reservoirs, reducing chemical and energy costs with advanced treatment technologies, or pioneering new approaches to maintain water quality all the way to the customer’s tap. Our industrial water specialists go beyond the meter and provide high-purity water and water-saving techniques that address the needs of industry. By optimizing the use of water and existing water system assets, we find a way to achieve sustainable, affordable solutions.

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Parsons is a technology-driven engineering services firm with more than 70 years of experience in the engineering, construction, technical, and professional services industries. The corporation is a leader in many diversified markets with a focus on infrastructure, defense, and construction. Parsons delivers design/design-build, program/construction management, systems design/engineering, cyber/converged security, and other professional services packaged in innovative alternative delivery methods to federal, regional, and local government agencies, as well as to private industrial customers worldwide.

Parsons conquers the toughest logistical challenges and delivers landmark projects across the globe. Today, our employees are engaged in projects in 27 countries around the world. Parsons’ employees continue to go anywhere, meet every technical and management challenge, and persevere until the job is done.

Parsons has been combining strong forward-thinking and cutting-edge technology to improve the way people connect with the world since 1944. Our success has been in striking the balance between big ideas and the technical ability to bring them to life. Thanks to Parsons’ global network of resources, we have the power to combine leading-edge technology with unparalleled quality and control. We back it all up with an unwavering commitment to safety for domestic and international projects of any scale, under any conditions.

All across the world, at every time of day, Parsons is keeping people moving toward a brighter, safer world.

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.




Acciona Agua is an experienced design build contractor of water and wastewater treatment plants, including membrane systems for desalination, with reference projects in the USA (Tampa Bay Desalination Plant) and Canada (Saint John Water Supply P3 in New Brunswick and North Shore Wastewater Treatment Plant in Vancouver). We are also an operations and maintenance contractor of all forms of treatment plants, including their associated linear infrastructure. If required, Acciona Agua can invest its own capital in P3 type projects. Acciona has offices in Chicago and Los Angeles.

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, Inc. 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 inhouse, 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.