Sumter City Of--sewage Treatment Plant, Maintenance Building Highway 521 S Sumter, SC 29150 Phone : (803) 481-4139 Business Category Builders & Contractors Sewer Contractors Water-Sewer Pipeline & Comms/Power Line Waste Water Treatment Plnt 600 Justin Ln Sumter, SC 29153 Phone : (803) 481-4139 Business Category Sewer Contractors Water-Sewer Pipeline & Comms/Power Line