| Lincolnville Town of (Sc1010007) | Lincolnville, SC | 1,980 | 114 | - |
| Fairfax Town of (Sc0310004) | Fairfax, SC | 1,962 | 47 | - |
| Blackville Town of (Sc0610003) | Blackville, SC | 1,934 | 57 | - |
| Swansea Town of (Sc3210006) | Swansea, SC | 1,923 | 70 | - |
| Jonesville Town of (Sc4410002) | Jonesville, SC | 1,917 | 16 | - |
| Metro Subdistrict B (4220003) | Spartanburg, SC | 1,905 | 8 | Clean |
| Barrineau Water System (1420002) | Lake City, SC | 1,879 | 1 | - |
| Mitford Water District (Sc2020005) | Great Falls, SC | 1,878 | 33 | - |
| Iva Town of (Sc0410001) | Iva, SC | 1,874 | 37 | - |
| Varnville Town of (2510005) | Hampton, SC | 1,865 | 13 | - |
| McCormick Cpw (3510001) | McCormick, SC | 1,818 | 57 | - |
| Gcwsd Garden City Point (Sc2220011) | Pawleys Island, SC | 1,790 | 6 | - |
| Upper Calhoun/Belleville (0920001) | Gaston, SC | 1,779 | 30 | - |
| Pamplico Town of (Sc2110010) | Pamplico, SC | 1,734 | 40 | - |
| Holly Hill Town of (Sc3810002) | Holly Hill, SC | 1,710 | 10 | - |
| Foxwood Hills (Sc3750025) | Des Peres, SC | 1,703 | 26 | - |
| Chesterfield Town of (1310002) | Chesterfield, SC | 1,670 | 29 | - |
| Dcws/Clay Field Drive (Sc1850014) | Summerville, SC | 1,648 | 0 | - |
| Lieber Correctional Institute (1870050) | Columbia, SC | 1,646 | 37 | - |
| Ridge Spring Town of (Sc4110002) | Ridge Spring, SC | 1,575 | 26 | - |
| Elloree Water System (Sc3810003) | Elloree, SC | 1,498 | 26 | - |
| Dcws Southern Palms (Sc1850011) | Summerville, SC | 1,494 | 7 | - |
| Midcounty Water Dist 1 (2020002) | Winnsboro, SC | 1,487 | 7 | - |
| North Town of (Sc3810010) | North, SC | 1,378 | 35 | - |
| College Acres Public W/D (Sc0220002) | Aiken, SC | 1,360 | 24 | - |
| Lake View Town of (Sc1710003) | Conway, SC | 1,293 | 17 | Clean |
| Prosperity Town of (Sc3610005) | Prosperity, SC | 1,292 | 10 | - |
| Bowman Town of (Sc3810004) | Bowman, SC | 1,274 | 41 | - |
| Upper Calhoun/Sandy Run (Sc0920002) | Gaston, SC | 1,247 | 34 | - |
| McBee Town of (Sc1310004) | McBee, SC | 1,239 | 2 | - |
| Talatha W/D (Sc0220005) | New Ellenton, SC | 1,237 | 11 | - |
| Lake Wylie MHP (Sc4660081) | Cary, SC | 1,225 | 7 | - |
| Branchville Town of (3810005) | Branchville, SC | 1,218 | 52 | Clean |
| Wagener Town of (Sc0210004) | Wagener, SC | 1,210 | 46 | - |
| McCrady Training Center (Sc4070911) | Eastover, SC | 1,200 | 29 | - |
| Sumter Co-Wedgefield-Stateburg WD | Sumter, SC | 1,200 | 115 | - |
| Cliffs at Glassy the (Sc2350023) | Greer, SC | 1,195 | 2 | - |
| Bgwc Oakland Plantation (Sc4350006) | Elgin, SC | 1,180 | 434 | - |
| Monetta Town of (Sc0210008) | Monetta, SC | 1,152 | 62 | - |
| Scranton Town of (Sc2110009) | Scranton, SC | 1,133 | 7 | - |
| Gcwsd Wedgefield Plantation (2220006) | Pawleys Island, SC | 1,132 | 5 | - |
| Bgwc Glenn Village II (Sc3250058) | Elgin, SC | 1,116 | 54 | - |
| Burnettown W/D (Sc0220007) | Bath, SC | 1,090 | 56 | - |
| Gcwsd Plantersville Sys (2220004) | Pawleys Island, SC | 1,079 | 11 | - |
| Rolling Meadows MHP (3260027) | Greenwood Village, SC | 1,056 | 50 | - |
| Harbor Island (Sc0750013) | Kiawah Island, SC | 1,039 | 52 | - |
| Lamar Town of (Sc1610004) | Lamar, SC | 1,034 | 89 | Clean |
| Lcjmwsc-Pelion Town of (Sc3210010) | Lexington, SC | 1,001 | 12 | - |
| Circle K 2723876 (Sc1570920) | Charlotte, SC | 1,000 | 12 | - |
| Ridgeville Industrial Campus (Sc1830031) | Summerville, SC | 1,000 | 0 | - |