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State utility hub
Browse the indexed community water systems in this state. Each profile brings the provider’s payment routes and household protection policies into a single, practical guide.
Municipal Department
Service area: City of Columbia, major portions of Richland County, portions of Lexington County, and surrounding Midlands communities
Population: Columbia Water’s official services page states that the City serves approximately 400,000 customers in Richland and Lexington Counties, with roughly 63,000 approved wastewater connections. The service area and customer base are far above the 3,300-person threshold.
Public Water Authority
Service area: Charleston and surrounding Charleston Water System service territory
Population: 327,422 people (EPA SDWIS PWS ID SC3210001-related 2026 active CWS queue entry).
Public Water Authority
Service area: Horry County and surrounding coastal service areas in Horry, Marion, and Dillon Counties
Population: 252,840 people (EPA SDWIS PWS ID SC2620004; 2026 active CWS record).
Public Water Authority
Service area: Greenville
Population: 426,057 people (EPA SDWIS active CWS PWS SC2310001)
Municipal Department
Service area: Columbia
Population: 354,068 people (EPA SDWIS active CWS PWS SC4010001)
Public Water Authority
Service area: Charleston and regional service area
Population: 327,422 people (EPA SDWIS active CWS PWS SC1010001)
Public Water Authority
Service area: Spartanburg and Spartanburg County service area
Population: 166,364 people (EPA SDWIS active CWS PWS SC4210001)
Public Water Authority
Service area: Beaufort and Jasper Counties and contracted municipal areas
Population: 164,829 people (EPA SDWIS active CWS PWS SC0720003)
Municipal Department
Service area: Sangaree and Berkeley County Water & Sanitation service areas
Population: 95,345
Public Water Authority
Service area: Mount Pleasant and portions of Charleston County
Population: Approximately 91,500 people in the Mount Pleasant Waterworks Community Water System queue
Municipal Department
Service area: Rock Hill and regional wholesale service area
Population: 89,850
Public Water Authority
Service area: Summerville Commissioners of Public Works service area, Dorchester and Berkeley counties, South Carolina
Population: 81,750 people
Public Water Authority
Service area: Lancaster County and connected LCWSD retail service areas
Population: 79,107 people (EPA CWS estimate for Lancaster County W&SD)
Public Water Authority
Service area: Greer and surrounding CPW service area
Population: 54,024 people (EPA SDWA queue estimate for SC2310005)
Municipal Department
Service area: City of Sumter
Population: 53,070 people (EPA SDWA queue estimate for SC4310001)
Public Water Authority
Service area: Darlington County Water and Sewer Authority service area
Population: 52,288 people (EPA SDWA queue estimate for SC1620001)
Public Water Authority
Service area: City of Greenwood
Population: 52,022 people (EPA SDWA queue estimate for SC2410001)
Municipal Department
Service area: City of Aiken
Population: 51,533 people (EPA SDWA queue estimate for SC0210001)
Public Water Authority
Service area: Powdersville and Upstate South Carolina service area
Population: 34,960 people (EPA SDWA queue estimate for SC0420002)
Municipal Department
Service area: West Columbia
Population: 34,028 people (EPA SDWA queue estimate for SC3210004)
Public Water Authority
Service area: Woodruff and Roebuck service area
Population: 32,038 people (EPA SDWA queue estimate for SC4220007)
Public Water Authority
Service area: Fort Jackson
Population: 31,000 people (EPA SDWA queue estimate for SC4010501)
Public Water Authority
Service area: York County East
Population: 30,225 people (EPA SDWA queue estimate for SC4620002)
Public Water Authority
Service area: Edgefield County / North Augusta area
Population: 29,200 people (EPA SDWA queue estimate for SC1920001)
Private Investor-Owned Utility
Service area: Summerville / Ashley Phosphate
Population: 26,536 people (EPA SDWIS 2026Q2 estimate for SC1820008)
Municipal Department
Service area: North Augusta
Population: 26,125 people (EPA SDWIS 2026Q2 estimate for SC0210003)
Public Water Authority
Service area: Lugoff–Elgin
Population: 25,783 people (EPA SDWIS 2026Q2 estimate for SC2820001)
Public Water Authority
Service area: Chesterfield
Population: 25,691 people (EPA SDWIS 2026Q2 estimate for SC1320003)
Public Water Authority
Service area: Hilton Head Island
Population: 25,558 people (EPA SDWIS 2026Q2 estimate for SC0720006)
Public Water Authority
Service area: Cassatt / Kershaw-Lee service area
Population: 25,485 people (EPA SDWIS 2026Q2 estimate for SC2820005)
Municipal Department
Service area: Fort Mill
Population: 25,000 people (EPA SDWIS 2026Q2 estimate for SC4610003)
Municipal Department
Service area: Gaffney
Population: 24,290 people (EPA SDWIS 2026Q2 estimate for SC1110001)
Public Water Authority
Service area: Johns Island
Population: 22,592 people (EPA SDWIS 2026Q2 estimate for SC1020002)
Public Water Authority
Service area: Graniteville
Population: 21,197 people (EPA SDWIS 2026Q2 estimate for SC0220006)
Public Water Authority
Service area: Belton
Population: 21,193 people (EPA SDWIS 2026Q2 estimate for SC0420007)
Municipal Department
Service area: Camden
Population: 19,076 people (EPA SDWIS 2026Q2 estimate for SC2810001)
Public Water Authority
Service area: Hilton Head Island
Population: 18,299 people (EPA SDWIS 2026Q2 estimate for SC0720001)
Public Water Authority
Service area: York
Population: 18,273 people (EPA SDWIS 2026Q2 estimate for SC4620003)
Public Water Authority
Service area: Chesnee
Population: 18,152 people (EPA SDWIS 2026Q2 estimate for SC4220010)
Private Investor-Owned Utility
Service area: Dillon
Population: 17,963 people (EPA SDWIS 2026Q2 estimate for SC1720001)
Municipal Department
Service area: Clemson
Population: 17,896 people (EPA SDWIS 2026Q2 estimate for SC3910004)
Municipal Department
Service area: MONCKS CORNER
Population: 95345 people (EPA SDWIS 2026Q2 active CWS estimate for SC0820002)
Municipal Department
Service area: MOUNT PLEASANT
Population: 91500 people (EPA SDWIS 2026Q2 active CWS estimate for SC1010002)
Municipal Department
Service area: ROCK HILL
Population: 89850 people (EPA SDWIS 2026Q2 active CWS estimate for SC4610002)
Municipal Department
Service area: LYMAN
Population: 89531 people (EPA SDWIS 2026Q2 active CWS estimate for SC4220006)
Municipal Department
Service area: SUMMERVILLE
Population: 81750 people (EPA SDWIS 2026Q2 active CWS estimate for SC1810003)
Municipal Department
Service area: FLORENCE
Population: 79745 people (EPA SDWIS 2026Q2 active CWS estimate for SC2110001)
Municipal Department
Service area: LANCASTER
Population: 79107 people (EPA SDWIS 2026Q2 active CWS estimate for SC2920001)
Private Investor-Owned Utility
Service area: MYRTLE BEACH
Population: 49375 people (EPA SDWIS 2026Q2 active CWS estimate for SC2610001)
Municipal Department
Service area: SWANSEA
Population: 47838 people (EPA SDWIS 2026Q2 active CWS estimate for SC3220003)
Municipal Department
Service area: ORANGEBURG
Population: 47463 people (EPA SDWIS 2026Q2 active CWS estimate for SC3810001)
Municipal Department
Service area: LAURENS
Population: 44866 people (EPA SDWIS 2026Q2 active CWS estimate for SC3020001)
Municipal Department
Service area: N MYRTLE BEACH
Population: 43883 people (EPA SDWIS 2026Q2 active CWS estimate for SC2610011)
Municipal Department
Service area: GOOSE CREEK
Population: 43744 people (EPA SDWIS 2026Q2 active CWS estimate for SC0810004)
Municipal Department
Service area: PAWLEYS ISLAND
Population: 41300 people (EPA SDWIS 2026Q2 active CWS estimate for SC2220010)
Municipal Department
Service area: INMAN
Population: 41007 people (EPA SDWIS 2026Q2 active CWS estimate for SC4220002)
Municipal Department
Service area: SUMMERVILLE
Population: 40141 people (EPA SDWIS 2026Q2 active CWS estimate for SC1820001)
Municipal Department
Service area: GREER
Population: 40006 people (EPA SDWIS 2026Q2 active CWS estimate for SC2320003)
Municipal Department
Service area: SENECA
Population: 39772 people (EPA SDWIS 2026Q2 active CWS estimate for SC3710002)
Municipal Department
Service area: ANDERSON
Population: 38204 people (EPA SDWIS 2026Q2 active CWS estimate for SC0410012)
South Carolina directory notes
This state hub brings together 60 indexed community water systems, from city departments and public authorities to investor-owned systems and smaller regional providers. A service area may cross municipal boundaries, so use the provider name and service address on your bill when choosing a profile.
The most important distinction is between a directory listing and an official account channel. Water Ledger provides a structured starting point; the utility’s own payment portal, published rate schedule, customer-service office, and mailed notice control your account. Compare the payment route, billing frequency, emergency number, and customer-protection notes before relying on a page for a time-sensitive decision.
If you are helping a household with a high bill, leak, or delinquency notice, open the utility profile and review the payment, shut-off, and leak-adjustment guides together. Keep the bill, account number, confirmation receipts, repair records, and notice dates available when speaking with the provider.