| Metro Wastewater Treatment Plant | Columbia | 32.28 |
| Plum Island WWTP | Charleston | 25.75 |
| North Charleston Sewer District WWTP Herbert Site | North Charleston | 16.42 |
| Gsw&sa Schwartz Myrtle Beach & Bucksport Reg Wwtps | Conway | 16.03 |
| Wcrsa Mauldin Road Wastewater Treatment Plant | Greenville | 13.4 |
| City Of Florence Pee Dee River WWTP | Florence | 11.11 |
| Lower Berkeley Wastewater Treatment Plant | Goose Creek | 10.18 |
| Sumter Pocataligo River WWTP | Sumter | 9.99 |
| A. Manning Lynch Wastewater Treatment Facility | Spartanburg | 9.72 |
| East Rich Co Psd Gills Creek | Columbia | 9.15 |
| Pelham WWTP | Greer | 8.7 |
| Bjw&sa Cherry Point WWTP | Ridgeland | 7.29 |
| Dorchester Co Lower Dorchester WWTP | Dorchester | 7.25 |
| Rifle Range Wastewater Treatment Facility | Mount Pleasant | 7.1 |
| Gsw&sa/george R Vereen WWTP | Conway | 5.83 |
| City Of Georgetown Sewage Treatment Facility | Georgetown | 5.34 |
| Orangeburg WWTF | Orangeburg | 5.23 |
| Summerville WWTF | Summerville | 5.2 |
| Wcrsa Gilder Creek | Mauldin | 4.93 |
| Bjw&sa Port Royal Water Recl Fac | Port Royal | 4.36 |
| Gsw&sa/conway WWTP | Conway | 3.67 |
| Generostee Creek Wastewater Treatment Plant | Anderson | 3.5 |
| Hilton Head No 1 Psd Wastewater Treatment Plant | Hilton Head Island | 3.15 |
| Bcw&sa Central Berkeley WWTP | Goose Creek | 3.05 |
| Maple Creek Wastewater Treatment Plant | Greer | 2.93 |
| N Myrtle Beach Ocean Drive | North Myrtle Beach | 2.52 |
| Newberry Bush River WWTF | Newberry | 2.18 |
| Walterboro City Of WWTP | Walterboro | 2.02 |
| Dillon Little Pee Dee | Dillon | 1.91 |
| Wcrsa Durbin Creek | Fountain Inn | 1.88 |
| Camden WWTF | Camden | 1.76 |
| South Island Psd WWTP | Hilton Head | 1.68 |
| Rewa Piedmont Regional WWTP | Piedmont | 1.65 |
| Cheraw Wastewater Treatment Plant | Cheraw | 1.63 |
| Little River Wastewater Treatment Plant | Laurens | 1.62 |
| City Of Bennettsville Wastewater Treatment Plant | Bennettsville | 1.54 |
| Lyman Town Of Waste Water Treatment Plant | Lyman | 1.53 |
| Cresent Beach WWTP | North Myrtle Beach | 1.43 |
| Renewable Water Resources/geor | Greenville | 1.42 |
| Gaffney Clary WWTF | Gaffney | 1.42 |
| Marion/s Main St WWTF | Marion | 1.39 |
| Kingstree Wastewater Treatment Plant | Kingstree | 1.26 |
| Murrells Inlet Wastewater Treatment Plant | Murrells Inlet | 1.26 |
| Batesburg-Leesville Waste Water Treatment Facility | Batesburg | 1.17 |
| Moncks Corner WWTF | Moncks Corner | 1.17 |
| Hartsville WWTF | Hartsville | 1.13 |
| Chapin Sewage System | Chapin | 1.04 |
| Dairy Street Wastewater Treatment Plant | Ware Shoals | 1.03 |
| Gaffney Broad Rvr | Gaffney | 1.03 |
| Johnsonville WWTP East | Johnsonville | 0.96 |
| Manning Waste Water Treatment Facility | Manning | 0.95 |
| Pendleton-Clemson Reg WWTF | Pendleton | 0.91 |
| York Fishing Creek WWTF | York | 0.88 |
| Florence City Of Timmonsville WWTP | Timmonsville | 0.84 |
| Lowcountry Regional Water System/hampton WWTF | Hampton | 0.79 |
| Clemson Cochran Rd WWTP | Clemson | 0.79 |
| Bjw&sa Hardeeville Church Road | Hardeeville | 0.77 |
| Kershaw Co/lugoff WWTF | Lugoff | 0.69 |
| Chester Sandy River Waste Water Treatment Facility | Chester | 0.66 |
| Darlington/black Creek WWTF | Darlington | 0.63 |
| Winnsboro Wastewater Treatment Plant | Winnsboro | 0.63 |
| Blackville WW Treatment Plant | Blackville | 0.55 |
| Gsw And Sa Loris Waste Water Treatment Facility | Loris | 0.54 |
| Richland Co Eastover Reg WWTP | Eastover | 0.48 |
| Williamston Big Creek WWTP | Williamston | 0.45 |
| Dorchester Co Upper Dorchester Co WWTP | Saint George | 0.42 |
| Combined Utility System | Easley | 0.41 |
| Latta Town Of (sc1710002)-Plant (b17004) Wells 1&2 (g17106,-107) | Latta | 0.4 |
| Leo Fisher Wastewater Treatment Plant (ducworth) | Belton | 0.36 |
| Calhoun Falls Town Of | Calhoun Falls | 0.36 |
| Sullivans Island WWTF | Sullivans Island | 0.36 |
| Woodruff Enoree River | Woodruff | 0.35 |
| Ncw&sa Cannons Creek WWTP | Prosperity | 0.34 |
| Ninety Six Waste Water Treatment Facility | Ninety Six | 0.34 |
| Hemingway Town Of (sc4510004)-Plant Well 2(g45107) Tupperware | Hemingway | 0.33 |
| Williamsburg Co Santee Rv WWTF | Greeleyville | 0.3 |
| Ecw&sa Johnston #1 WWTP | Edgefield | 0.29 |
| Pickens Co 18 Mile Creek Upper WWTP | Liberty | 0.27 |
| Chester Lando-Manetta Plant | Chester | 0.24 |
| Saint Stephens Town Of | Saint Stephen | 0.24 |
| Lamar Town Of | Lamar | 0.24 |
| Brunson Town Of | Brunson | 0.24 |
| Harleyville Town Of | Harleyville | 0.23 |
| Gsw&sa Town Of Lake View WWTP | Lake View | 0.22 |
| Town Of Edisto Beach Ro WTP | Edisto Island | 0.21 |
| Blacksburg Canoe Creek (new) | Blacksburg | 0.17 |
| Lrws Yemassee WWTP | Yemassee | 0.16 |
| Wcrsa/avice Dale Plant | Greenville | 0.15 |
| Mccoll Town Of | Mccoll | 0.13 |
| Pamplico Town Of | Pamplico | 0.13 |
| Wagener Town Of | Wagener | 0.12 |
| Isle Of Palms Forest Trail Sd | Isle Of Palms | 0.12 |
| Jefferson WWTF | Jefferson | 0.09 |
| Sssd Pacolet Mills WWTP | Pacolet | 0.09 |
| Due West WWTF | Due West | 0.08 |
| Easley Golden Creek Lagoon | Easley | 0.08 |
| Pickens Co Psc Central-North | Liberty | 0.08 |
| Pinewood Town Of WWTP | Pinewood | 0.07 |
| Branchville Town Of | Branchville | 0.07 |
| Saluda Town Of | Saluda | 0.06 |
| Gcw&sd Debordieu Colony WWTP Alternative Discharge | Georgetown | 0.06 |
| Ridgeway Town Of | Ridgeway | 0.06 |
| Springfield/ Plant #2 | Springfield | 0.06 |
| Lynchburg Waste Water Treatment Facility | Lynchburg | 0.04 |
| Norway Town Of | Norway | 0.04 |
| Heath Springs Waste Water Treatment Facility | Heath Springs | 0.03 |
| Gsw&sa Town Of Nichols | Nichols | 0.03 |
| Town Of Jonesville | Jonesville | 0.03 |
| Sumter County I-95 Rest Area | Shiloh | 0.02 |
| Pickens Co Psc Cateechee WWTF | Norris | 0.01 |
| Sc Dprt Oconee State Park | Mountain Rest | 0.01 |
| Bcsd James J Davis Elem School | Beaufort | 0 |
| Bcsd Cross High School | Cross | 0 |
| Charleston Cpw Daniel Island | Charleston | — |
| Clio WWTF | Clio | — |
| Denmark City Of | Denmark | — |
| Gsw&sa Central WWTP | Conway | — |
| Ridgeland Jimmy Mixson WRF | Ridgeland | — |
| Springfield/ Plant #1 | Springfield | — |
| Town Of Holly Hill (new) WWTP | Holly Hill | — |
