Hanahan WTP Plate Settler Basins and Solids Handling Improvements

Modernizing aged infrastructure without impacting operations.

Treatment Plant Facilities
Hanahan, SC
Delivery Method
CM at-Risk
Charleston Water System
Year Complete

Project Overview

This $41.9 million project replaces aged infrastructure and provides additional optimization to the coagulation and flocculation process at the existing treatment facility to more efficiently serve over 400,000 people in the Charleston area. Construction also included modifications to the solids handling system, three flocculation/sedimentation basins, pretreatment chemical systems, post chemical and lime feed improvements, and miscellaneous improvements throughout the site.

The CM at-Risk delivery method was selected to expedite construction and facilitate integration of new facilities with minimal disruption of plant operations, while maximizing the scope of improvements within the project budget.


Value Engineering Savings Without Scope Loss


MGD Water Treatment Facility


Individual Turnover Stages to the Owner