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 aecom.com and @AECOM.

Core & Main is a leading specialized distributor of water, wastewater, storm drainage, fire protection products, and related services, built on the foundation of more than 100 legacy companies. We are industry leaders, supplying local expertise, service, and products nationwide to build innovative water, wastewater, energy ,and fire protection solutions for our customers and the communities we serve. Our experienced professionals provide customized specifications, material management, value analysis, accurate take-offs, pipe layout drawings, project management, and more. We pride ourselves on advancing reliable surface and sub-service infrastructure with local service, nationwide.

Garney is the national leader in water and wastewater infrastructure. Since 1961, Garney has been committed to delivering clean, safe drinking water and protecting public health through essential water and wastewater systems. Garney specializes in self-performing construction services for water and wastewater pipelines, treatment facilities, pumping stations, water storage tanks, and industrial/heavy civil projects through conventional and collaborative delivery methods for municipal, federal, and private sector clients. As a 100% employee-owned company with 19 offices and 3,000 employee-owners nationwide, Garney is committed to advancing the future of water and wastewater infrastructure. At the core of Garney’s work is its guiding purpose: Building Sustainable Futures with the World’s Most Precious Resources—Water & People®.

Haskell is a 100% collaborative, self-performing builder with a regional footprint and national reach. Our core values of team, excellence, service, and trust ensure that we deliver an exceptional client experience from preconstruction planning to the completion of water infrastructure projects. Clients repeatedly select Haskell on the basis of our consistent record of performance excellence.

AMERICAN Cast Iron Pipe Company, founded in Birmingham, AL, in 1905, is a manufacturer of ductile iron pipe, spiral-welded steel pipe, fire hydrants, and valves for the waterworks industry. We at AMERICAN are committed to providing vital products to society. We believe in doing things the right way by treating our customers, employees, and communities the way we want to be treated.

Headquartered in Walnut Creek, California, Brown and Caldwell is a full-service environmental engineering and construction services firm with more than 50 offices and over 2,300 professionals across North America and the Pacific. For more than 75 years, our creative solutions have helped municipalities, private industry, and government agencies overcome their most challenging water and environmental obstacles. We’re employee-owned and bound by a shared purpose to unlock the potential of water for our clients, our communities, and our environment.

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.

As the nation’s largest waterworks company, Ferguson Waterworks offers contractors and municipalities a reliable coast-to-coast network of more than 250 locations and over 2,500 highly trained associates. Our relationships with the industry’s top vendors allow on-time delivery, unmatched support, and industry-leading fill rates for a wide breadth of products across the water, sanitary sewer, and stormwater management industries. Public and private water and sewer authorities, utility contractors, public works/line contractors, heavy highway contractors, and more look to Ferguson Waterworks for our customer-first approach to supply and service in the waterworks industry.

PCL Construction is ranked No. 11 on Engineering News-Record’s 2025 Top 400 Contractors list. We deliver complex water and wastewater infrastructure projects nationwide, helping communities access clean, reliable water. With 40 years of expertise, we provide cost-effective, future-ready solutions that combine cutting-edge treatment processes with sustainability measures. Supported by more than 13,000 salaried staff and tradespeople companywide, we employ a variety of collaborative delivery methods to build resilient water infrastructure more efficiently and effectively. We leverage methods such as CMAR and design-build, involving our team in the early stages of project development to ensure advanced constructability and maximized value at the best price.
With more than $8.1 billion in water and wastewater collaborative delivery projects, we redefine full-service capabilities under all construction models. Through a collaborative approach, PCL builds resilient water infrastructure that shapes communities for the future.

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. As the oldest privately held national construction company in the country, McCarthy has nearly 160 years of experience collaborating with partners to solve complex building challenges on behalf of clients. Over the past 40 years, McCarthy’s national water and wastewater group has delivered over $4.7 billion worth of work, including over $3 billion in collaborative delivery over the last two decades. Some of our recent successful collaborative delivery projects include: one of the world’s largest Aqua-Aerobic disk filtration system installations for dual-use filtration at the Tomahawk Creek Wastewater Treatment Facility; the $1.8 billion expansion of the Northeast Water Purification Plant intake pump station in Houston, TX; 15 mgd expansion and upgrades of the Pyramid Peak Water Treatment Plant owned by multiple cities in Arizona; a new wastewater treatment plant for the City of Winnemucca, NV; advanced water treatment facilities in California, Colorado, and Nevada; and the $170 million Phase III 14 mgd expansion of liquids and solids treatment at the Greenfield Water Reclamation Plant, which serves three Arizona municipalities. From early in the design phase, through construction and startup, we provide general contracting, construction management, program management, and design-build services for water treatment, water reclamation, and wastewater treatment projects. Our teams specialize in qualifications-based delivery, which means we work closely with our clients to understand their unique needs and requirements to deliver tailored solutions. By partnering with municipal, governmental, and private clients, McCarthy helps to design and build facilities that cost effectively process wastewater and produce fresh drinking water for communities around the country. McCarthy is recognized for its unrelenting focus on safety and comprehensive quality program that spans all phases of each project. As an employee-owned company, everyone at McCarthy is committed to delivering an exceptional experience for our clients while ensuring superior quality and safety embedded in every aspect of our work.

Founded in 1965, Pape-Dawson is a leading provider of comprehensive professional engineering and consulting services. The firm provides civil engineering, environmental, landscape architecture, planning, and surveying services for development and critical infrastructure projects. The firm’s network of engineers, surveyors, technicians, landscape architects, environmental specialists, biologists, planners, and construction management professionals produce projects that positively impact both the quality of life and economic opportunities in the communities they serve.

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.

DN specializes in the design and construction of AWWA D110 prestressed concrete tanks used for potable water, wastewater, chilled water, and other liquids. With over 90 years of experience, and over 3,500 tanks ranging in capacity from 40,000 gallons to 50 million gallons, DN offers expanded construction capacity, unmatched technical expertise on new and existing concrete tank structures, and proficiency in multiple types of proven tank designs to provide customized storage solutions. Our tanks are designed to meet varying project requirements while delivering our clients the lowest future cost of ownership and best long-term value.

Nicholson, headquartered in Pittsburgh, PA, is a nationally renowned geotechnical contractor with extensive experience as both a subcontractor and prime contractor across various industries, including the water/wastewater industry. Founded in 1955 as a family-run business, Nicholson has grown into a nationwide leader known for innovative solutions to complex geotechnical and engineering challenges focused around deep foundation, earth retention, and ground treatment systems. Our 70-year history has built a strong reputation as trusted advisors, adept at understanding and mitigating underground design and construction challenges safely and creatively. We have taken these experiences and capabilities and used them to participate as a key partner on collaborative delivery projects (CMAR, CM/GC, DB, ECI, etc.). We are proud to use our expertise to build the foundations of America’s infrastructure.

STRUCTURAL TECHNOLOGIES develops and integrates repair and renewal products, and technical support services, with our contracting licensees to provide turnkey value-added solutions to water/wastewater owners, consultants, and contractors. Our water/wastewater team is focused on developing solutions to make critical pipelines, water and wastewater storage, and treatment system infrastructure stronger and last longer. From investigation and design support to construction, our subject matter experts assist and collaborate throughout the design-build process. STRUCTURAL TECHNOLOGIES is recognized as the industry leader in the design, supply, and installation of carbon fiber reinforced polymer (CFRP) Class IV renewal systems for large-diameter pipelines.