Founded in 1981, Western Summit Constructors is a premier environmental contractor specializing in the building of water and wastewater facilities throughout the United States. Western Summit Constructors is among the top contractors in the water and wastewater industry, consistently ranked as one of Engineering News Record's Top 20 Water and Wastewater Contractors. WSCI specializes in municipal and industrial water and wastewater treatment facilities and water storage facilities. As of 1993, WSCI became a wholly-owned subsidiary of TIC Holdings. WSCI has operates their corporate office in Denver, Colo., with regional offices in Atlanta, Ga., San Diego, Calif., and Houston, Texas.