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Grand Strand Water & Sewer News

DWSRF Notice – Conway Parallel Transmission Main

May 25, 2023

The Conway Parallel Transmission Main project is being financed by the Drinking Water State Revolving Fund (DWSRF). The DWSRF program is administered by the SC Department of Health and Environmental Control (SCDHEC) and the South Carolina Rural Infrastructure Authority (SCRIA) with joint funding from the US Environmental Protection Agency (EPA).

This project is designed to increase the capacity of the existing water distribution system through the construction of a new 24” transmission main that will parallel the existing 24” transmission main. Increasing capacity of the distribution system is necessary as the capacity of the Bull Creek SWTP expands in capacity, and population in the water system increases. The new transmission main will also allow for more system resiliency and redundancy, while reducing stress on the existing infrastructure.

There were several transmission main alternative locations considered. Due to the isolation of the Bull Creek SWTP from the distribution system, the parallel 24” transmission main was the only feasible route. The location of the existing 24” main provides an efficient route to parallel and the ability to provide multiple interconnections with the existing system to improve water quality. The proposed transmission main will tie into the existing transmission main.

The project will include the construction of approximately 60,000 linear feet of 24-inch C900 DR25 PVC transmission main. The other design alternative is to leave the distribution system as-is. This alternative is not feasible, as the existing 24” transmission main would exceed a safe working velocity and create significant head loss for the existing pump station.

The estimated cost of the project is $24,250,000 which includes all required valves, fittings, hydrants, bores, and pipe associated with the transmission main.

The project will have minimal impacts to wetlands. There are no other environmental impacts associated with this project.

Grand Strand Water & Sewer Authority (GSWSA) will host a public hearing on Monday, June 26, 2023 during its regular scheduled board meeting, to discuss the project and to hear public comments. Members of the public are welcome to attend and provide comment for the public record. The meeting will begin at 6:00 p.m. and take place at the Grand Strand Water & Sewer Authority Administration Center located at 166 Jackson Bluff Road, Conway,  SC 29526.

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