The Dublin Wastewater Treatment Facility Expansion and Re-Use project consisted of the modernization of the existing facilities and expansion from 4 mgd to 6 mgd with a 2 mgd re-use component. The existing trickling filter system was upgraded to include additional influent pumping, grit removal, secondary sedimentation, sludge dewatering facilities, and a dual media filtration tertiary treatment system. Treated tertiary water is transported to a local industry for reuse in their process water train, thus reducing the amount of water the industry must withdraw from the Oconee River. The reuse system consists of a pumping station, transmission line and monitoring station. To minimize impacts to the Oconee River, reuse transmission main was installed via a long directional drill under the river.
At the time of completion the project was one of the largest re-use systems in the state. This helped reduce the impacts to the Oconee River and assisted downstream users in their source water protection planning. An award-winning design, the project was an innovative use of treated municipal wastewater to aid in conservation measures and to reduce environmental impacts.