• Sewage Treatment

    CWI has constructed over 35 sewage treatment facilities with processes such as influent pre-screening, Parshall flumes, pre-rotation screens, SBR’s, clarifiers, blowers, aeration systems, sludge dewatering equipment and tertiary treatment. We are one of only two contractors in California to construct a Solar Sludge Drying Facility.




    CWI recently completed the Secondary Clarifier and Solar Drying Facilities for the Town of Discovery Bay. The project consisted of a structural clarifier tank, mechanism, sludge pump station, mechanical, structural concrete drying slab, belt press foundation, and belt press.