| Batesburg
Leesville Dept of Public Works |
| Beaufort
Jasper Water and Sewer |
| Berea
Public Service District (Fire Dept) |
| Berkeley
County Water and Sanitation Authority |
| Breezy
Hill Water |
| Broad
Creek PSD |
| Charleston
Water System |
| Chester
Metropolitan District |
| City
of Bennettsville |
| City
of Camden |
| City
of Clemson Utilities |
| City
of Columbia |
| City
of Folly Beach |
| City
of Georgetown |
| City
of Greenville |
| City
of Johnsonville |
| City
of Lancaster Public Work |
| City
of Myrtle Beach |
| City
of Newberry |
| City
of Rock Hill |
| City
of Union |
| Easley
Combined Utility |
| Edgefield
County Water and Sewer |
| Gaffney
Board of Public Works |
| Georgetown
County Water and Sewer |
| Greenwood
Metropolitan District |
| Greer
CPW |
| Hilton
Head PSD #1 |
| Isle
of Palms Water and Sewer |
| James
Island PSD |
| Joint
Municipal Wtr & Swr Comm(formerly Lexington County
Water and Sewer) |
| Kiawah
Island Utility |
| Lancaster
County Water and Sewer District |
| Laurens
CPW |
| Little
River Wtr & Swr Co., Inc |
| McCormick
Commission of Public Works |
| Mount
Pleasant Water and Sewer Commission |
| Ninety
Six Commission of Public Works |
| Ocean
Lake Family Campground |
| Orangeburg
DPU |
| Richland
County Utilities |
| Rural
Community District of Georgetown Cty |
| Saluda
County Water and Sewer |
| Seabrook
Isle Water and Sewer Commission |
| South
Island PSD |
| Spartanburg
Water System |
| Town
of Bamberg |
| Town
of Blacksburg |
| Town
of Calhoun Falls |
| Town
of Clover |
| Town
of Edisto Beach |
| Town
of Hollywood |
| Town
of Lexington |
| Town
of Pelzer |
| Town
of Ware Shoals |
| Town
of West Pelzer |
| Town
of Winnsboro |
| University
of South Carolina - Columbia |
| Williamsburg
County Water and Sewer |
| York
County Water and Sewer |
