International Projects

  GREATER HOUSTON WASTEWATER PROGRAM,
    HOUSTON, TEXAS, USA


The Greater Houston Wastewater Program (GHWP) was a five-year $1.2 billion project to control wet weather overflows in the City’s sanitary sewer system. Houston's wastewater system is one of the largest in the nation, with 43 wastewater treatment plants, 5,600 miles of sewers and 320 lift stations.

Involved in all aspects of the program including project management, design management, environmental engineering and permitting support, comprehensive program management, cost-savings analysis, detailed design and construction management. The sewer rehabilitation component of the program was the largest sewer rehabilitation effort in the United States at the time. The work included conceptual design of relief and rehabilitation projects ranging from open cut to deep tunnels, slip lining, cured-in-place, deform/reform and pipe-bursting techniques. Over 150,000 feet of new sewer installed by micro tunneling was also completed in the course of the work. The development of design guidelines for underground construction to ensure standardization of designs being prepared by the design sub consultants was also accomplished. Construction Management on the program also required resource planning to optimize the capacity of available contractors (both prime, sub and minority sub) to successfully complete the work. At the peak the Program management team consisted of more than 300 staff from the City and consultants working in an integrated organization.