Cowskin Creek Water Quality Reclamation Facility Improvement

Client: City of Wichita
Completion Date: 2016
Location: Wichita, Kansas


Our team, working with CAS Constructors, provided integrated planning, design and construction services for the 2 million-gallon-per-day (MGD) Cowskin Creek Water Quality Reclamation Facility Improvement project. The project addresses three areas of concern for Wichita: headworks and odor control, solids handling and digestion, and plant reuse pumping. The project was designed and constructed in two phases using a progressive design-build delivery method.

Phase one included preparation of the design to 30 percent complete and preparation of the guaranteed maximum price proposal. Phase two included preparation of the complete design, construction and post-construction tasks, including performance testing, startup, commissioning, and operator training and support.

Improvements include installation of a new Grit King grit removal unit, rehabilitation of the influent screening channels, significant reconfiguration and reconstruction of the biosolids digestion and dewatering process, installation of a new centrifuge for solids processing, installation of a new Bohn biofilter system, and improvements for the effluent reuse pumps.


  • Preliminary studies
  • Field investigations
  • Conceptual design
  • GMP development
  • Final design
  • Construction
  • Startup and commissioning
  • Operator training


  • Headworks rehabilitation
  • Grit removal
  • Odor control
  • Influent screening channel rehabilitation
  • Biosolids digestion
  • New centrifuge installation
  • New Bohn biofilter installation
  • Effluent reuse pump rehabilitation