CH2M HILL Companies, Ltd. operates as an engineering services company worldwide. Its Energy, Water, and Facilities segment performs engineering, fabrication, erection, construction, operation, and maintenance services for oil and gas fields; and provides design, program management, consulting, planning, and construction services to integrated circuit, wafer, dynamic random access memory, nanotechnology, photo voltaic, data center, flat panel display, automotive, aerospace and aviation, food and beverage, building materials, metals, and consumer products sectors. It also offers operations management services, such as water and wastewater system and staff optimization; contract operations and maintenance of water, wastewater, and other municipal functions; facilities management; utilities operations and maintenance; and management, asset management/maintenance, and financial consulting. In addition, this segment designs and builds power generation facilities that produce energy from natural gas, coal, solar, wind, biomass, and geothermal sources; and supports water-related needs of clients in the utility, industrial, government, energy, and agricultural sectors. The company's Government, Environment, and Infrastructure segment provides sustainability consulting, threat reduction management, environmental compliance, planning and permitting, integrated waste solutions, munitions response, natural resources planning and management, sediment management and remediation, and site remediation and revitalization services; and plans, designs, constructs, operates, and maintains facilities and infrastructure at government and military installations. It also manages and operates nuclear facilities; provides cleanup and environmental remediation for commercial and government facilities; and offers infrastructure development services for aviation, highway/bridge, ports and maritime, and rail sectors.