Results from entry points (water leaving treatment, not household taps) of public water systems sampled under EPA's Fifth Unregulated Contaminant Monitoring Rule. Click a county to see every water system serving it, or turn on service areas and click a location to see the systems that serve that spot.
165 of the 641 public water systems listed for South Carolina were sampled. Sorted by the highest single result relative to EPA's 2024 limits. Each name links to a page with all of that system's results. All 641 South Carolina systems, including those not tested · Download all South Carolina results (CSV, gzip)
| System | PWSID | City | Population | PFOA (ppt) | PFOS (ppt) | HI | Highest single result |
|---|---|---|---|---|---|---|---|
| Abbeville City Of (Sc0110001) | SC0110001 | Abbeville | 5,650 | <MRL | <MRL | 17.004 | Hazard Index ≥ 3 × its limit |
| Laurens County W&S Comm (Sc3020001) | SC3020001 | Laurens | 44,866 | 7.5 | 8.7 | 9.582 | Hazard Index ≥ 3 × its limit |
| Greenwood Cpw (2410001) | SC2410001 | Greenwood | 52,022 | 5.9 | 8.7 | 9.112 | Hazard Index ≥ 3 × its limit |
| Belton City Of (Sc0410004) | SC0410004 | Belton | 6,762 | 4.8 | <MRL | 8.292 | Hazard Index ≥ 3 × its limit |
| Winnsboro Town Of (2010001) | SC2010001 | Winnsboro | 10,391 | <MRL | 32.8 | 0.9 | PFOS ≥ 3 × its limit |
| Midcounty Water Dist 2 (Sc2020004) | SC2020004 | Winnsboro | 3,500 | <MRL | 20.1 | 0.65 | PFOS ≥ 3 × its limit |
| Draytonville Water Dist (Sc1120003) | SC1120003 | Gaffney | 5,456 | 16.2 | 19.4 | 0.552 | PFOS ≥ 3 × its limit |
| Grassy Pond Water Co Inc (Sc1120002) | SC1120002 | Gaffney | 9,895 | 15 | 19 | 0.572 | PFOS ≥ 3 × its limit |
| Gaffney Bpw (Sc1110001) | SC1110001 | Gaffney | 24,290 | 18 | 17.1 | 0.602 | PFOA ≥ 3 × its limit |
| Saluda Cpw (Sc4110001) | SC4110001 | Saluda | 3,390 | 6.5 | 9.9 | 4.302 | Hazard Index ≥ 3 × its limit |
| Goucher Wd (1120004) | SC1120004 | Pacolet | 5,426 | 14 | 17 | 0.47 | PFOS ≥ 3 × its limit |
| Honea Path Town Of (Sc0410003) | SC0410003 | Honea Path | 4,386 | <MRL | <MRL | 4.2 | Hazard Index ≥ 3 × its limit |
| Donalds-Due West W&Sa (Sc0120001) | SC0120001 | Donalds | 5,200 | <MRL | <MRL | 4 | Hazard Index ≥ 3 × its limit |
| Batesburg Leesville Dpw (Sc3210002) | SC3210002 | Batesburg-Leesville | 6,814 | 11.5 | 15 | 0 | PFOS ≥ 3 × its limit |
| Blacksburg Town Of (Sc1110002) | SC1110002 | Blacksburg | 3,963 | 12.4 | 13 | 0.41 | PFOS ≥ 3 × its limit |
| Grand Strand W&Sa/Bull Creek | SC2620004 | Conway | 252,840 | 11.4 | 11.5 | 0.003 | PFOS 1–3 × its limit |
| Newberry City Of (Sc3610001) | SC3610001 | Silverstreet | 10,810 | 6.3 | 11.3 | 1.022 | PFOS 1–3 × its limit |
| Conway Rural (Sc2620001) | SC2620001 | Conway | 12,740 | 10.9 | 10.8 | 0.002 | PFOA 1–3 × its limit |
| Conway City Of (Sc2610008) | SC2610008 | Conway | 27,005 | 9.2 | 10.3 | 0.003 | PFOS 1–3 × its limit |
| N Myrtle Beach City Of (Sc2610011) | SC2610011 | N Myrtle Beach | 43,883 | 8.4 | 10 | 0.002 | PFOS 1–3 × its limit |
| Georgetown City Of (Sc2210001) | SC2210001 | Georgetown | 9,092 | 8.3 | 9.7 | 0.002 | PFOS 1–3 × its limit |
| Saluda Co W&S Authority (Sc4120001) | SC4120001 | Ridge Spring | 5,060 | 5.2 | 9.7 | 0.8 | PFOS 1–3 × its limit |
| Gcwsd Waccamaw Neck (Sc2220010) | SC2220010 | Pawleys Island | 41,300 | 9.5 | 9.1 | 0.003 | PFOA 1–3 × its limit |
| Lugoff Elgin Water Auth (Sc2820001) | SC2820001 | Lugoff | 25,783 | 7.1 | 9.3 | 0 | PFOS 1–3 × its limit |
| Mccormick Co W&Sa (Sc3520002) | SC3520002 | Mccormick | 8,500 | <MRL | 8.8 | 0.662 | PFOS 1–3 × its limit |
| Ware Shoals Town Of (Sc2410003) | SC2410003 | Ware Shoals | 3,174 | 5.7 | 8.4 | 2.2 | Hazard Index 1–3 × its limit |
| Columbia City Of (Sc4010001) | SC4010001 | Columbia | 354,068 | 6.9 | 8.6 | 0.92 | PFOS 1–3 × its limit |
| St John'S Water (Sc1020002) | SC1020002 | Johns Island | 22,592 | 5.4 | 8.5 | 0.002 | PFOS 1–3 × its limit |
| Mt Pleasant Waterworks (Sc1010002) | SC1010002 | Mount Pleasant | 91,500 | 5.5 | 8.4 | 0.002 | PFOS 1–3 × its limit |
| Bgwc I-20 (Sc3250012) | SC3250012 | Columbia | 7,435 | 5.7 | 8.3 | 0.952 | PFOS 1–3 × its limit |
| Clinton City Of (Sc3010002) | SC3010002 | Clinton | 8,938 | 8 | 8.1 | 1.435 | PFOS 1–3 × its limit |
| Dcwa Knightsville (Sc1820001) | SC1820001 | Summerville | 40,141 | 6.5 | 8.1 | 0.002 | PFOS 1–3 × its limit |
| Folly Beach City Of (1010005) | SC1010005 | Folly Beach | 5,086 | 5 | 8.1 | 0.002 | PFOS 1–3 × its limit |
| Newberry Co W&Sa (Sc3620002) | SC3620002 | Newberry | 11,157 | 4.8 | 8.1 | 0.97 | PFOS 1–3 × its limit |
| Summerville Cpw (Sc1810003) | SC1810003 | Summerville | 81,750 | 6.2 | 8.1 | 0.002 | PFOS 1–3 × its limit |
| Isle Of Palms W/S Comm (Sc1010004) | SC1010004 | Isle Of Palms | 9,530 | 5.7 | 8 | 0.002 | PFOS 1–3 × its limit |
| Moncks Corner City Of | SC0810001 | Moncks Corner | 8,956 | 5.8 | 8 | 0.722 | PFOS 1–3 × its limit |
| Kiawah Island Utility (Sc1010008) | SC1010008 | Kiawah Island | 9,550 | 4.5 | 7.9 | 0.002 | PFOS 1–3 × its limit |
| West Columbia City Of (Sc3210004) | SC3210004 | West Columbia | 34,028 | 6.1 | 7.9 | 0.97 | PFOS 1–3 × its limit |
| Amicks Ferry Wtr System (Sc3250077) | SC3250077 | Chapin | 3,937 | 4.6 | 7.6 | 0.72 | PFOS 1–3 × its limit |
| Shaw Afb (Sc4310501) | SC4310501 | Shaw Afb | 9,000 | 6.1 | 6.2 | 1.9 | Hazard Index 1–3 × its limit |
| Seabrook Island Town Of (1010009) | SC1010009 | Johns Island | 5,939 | 5 | 7.5 | 0.002 | PFOS 1–3 × its limit |
| Dcws Ashley Phosphate (Sc1820008) | SC1820008 | Summerville | 26,536 | 6.4 | 7.4 | 0.002 | PFOS 1–3 × its limit |
| Fort Jackson (Sc4010501) | SC4010501 | Fort Jackson | 31,000 | 6.9 | 7.3 | 0.812 | PFOS 1–3 × its limit |
| Goose Creek City Of (Sc0810004) | SC0810004 | Goose Creek | 43,744 | 5.8 | 7.2 | 0.682 | PFOS 1–3 × its limit |
| Bcwsa East Cooper (Sc0820009) | SC0820009 | Moncks Corner | 12,933 | 5.9 | 7.1 | 0.742 | PFOS 1–3 × its limit |
| Bcwsa Sangaree W/D (0820002) | SC0820002 | Moncks Corner | 95,345 | 6.1 | 7.1 | 0.002 | PFOS 1–3 × its limit |
| Dcwa Calomet Valley (1850009) | SC1850009 | Summerville | 275 | 5.2 | 6.7 | 0.622 | PFOS 1–3 × its limit |
| Florence City Of (Sc2110001) | SC2110001 | Florence | 79,745 | 5.5 | 6.7 | 0.002 | PFOS 1–3 × its limit |
| Charleston Water System (Sc1010001) | SC1010001 | Charleston | 278,771 | 4.7 | 6.5 | 0.002 | PFOS 1–3 × its limit |
| Cayce City Of (Sc3210003) | SC3210003 | West Columbia | 17,460 | 5.5 | 6.3 | 1.162 | PFOS 1–3 × its limit |
| Joint Muni Wsc (Sc3220003) | SC3220003 | Swansea | 54,868 | 4.4 | 6.2 | 1.01 | PFOS 1–3 × its limit |
| Union City Of (Sc4410001) | SC4410001 | Union | 13,076 | 5.9 | 6.1 | 0.002 | PFOS 1–3 × its limit |
| Lexington Town Of (3210001) | SC3210001 | Lexington | 24,284 | 4.4 | 5.7 | 0.91 | PFOS 1–3 × its limit |
| Bjw&Sa (Sc0720003) | SC0720003 | Okatie | 164,829 | 5.6 | 5.3 | 0.003 | PFOA 1–3 × its limit |
| Fripp Island Psd (Sc0720002) | SC0720002 | Fripp Island | 3,536 | 4.4 | 5.4 | 0.002 | PFOS 1–3 × its limit |
| Cheraw Town Of (Sc1310001) | SC1310001 | Cheraw | 6,325 | <MRL | 5.3 | 0 | PFOS 1–3 × its limit |
| Myrtle Beach City Of | SC2610001 | Myrtle Beach | 49,375 | 5.3 | 5.3 | 0.34 | PFOA 1–3 × its limit |
| Camden City Of (Sc2810001) | SC2810001 | Camden | 19,076 | 5.2 | 4.7 | 0 | PFOA 1–3 × its limit |
| Hilton Head Psd 1 (0720006) | SC0720006 | Hilton Head Island | 25,558 | 5.1 | 5.2 | 0.002 | PFOS 1–3 × its limit |
| Meansville Riley W/D (Sc4420001) | SC4420001 | Union | 7,368 | 5.2 | 4.9 | 0 | PFOA 1–3 × its limit |
| Daniel Morgan Water District (1120001) | SC1120001 | Chesnee | 5,746 | 4.1 | 5 | 0 | PFOS 1–3 × its limit |
| Ocean Lakes Ltd (Sc2660048) | SC2660048 | Myrtle Beach | 10,727 | 5 | 4.6 | 0 | PFOA 1–3 × its limit |
| Starr-Iva W/D (Sc0420005) | SC0420005 | Starr | 11,125 | 4.9 | 4 | 0.002 | PFOA 1–3 × its limit |
| Breezy Hill W/D (Sc0220006) | SC0220006 | Graniteville | 21,197 | 4.8 | <MRL | 0.002 | PFOA 1–3 × its limit |
| Chester Metropolitan District (1220002) | SC1220002 | Chester | 15,668 | 4.6 | 4.7 | 0 | PFOS 1–3 × its limit |
| Woodruff Roebuck W/D (Sc4220007) | SC4220007 | Woodruff | 32,038 | 4.7 | <MRL | 0.002 | PFOA 1–3 × its limit |
| Central Town Of (Sc3910005) | SC3910005 | Central | 3,495 | 4.2 | 4.2 | 0.002 | PFOA 1–3 × its limit |
| Orangeburg Dpu (Sc3810001) | SC3810001 | Orangeburg | 47,463 | <MRL | 4.2 | 0 | PFOS 1–3 × its limit |
| Lancaster City Of (Sc2910001) | SC2910001 | Lancaster | 14,074 | 4 | <MRL | 0 | PFOA 1–3 × its limit |
| Aiken City Of (Sc0210001) | SC0210001 | Aiken | 51,533 | <MRL | <MRL | 0.32 | Hazard Index below its limit |
| Big Creek W/S District (0420009) | SC0420009 | Belton | 13,647 | <MRL | <MRL | 0.002 | Hazard Index below its limit |
| Broadway W&S District (Sc0420008) | SC0420008 | Anderson | 9,586 | <MRL | <MRL | 0.002 | Hazard Index below its limit |
| Clemson City Of (Sc3910004) | SC3910004 | Clemson | 17,896 | <MRL | <MRL | 0.002 | Hazard Index below its limit |
| Clemson University (Sc3910006) | SC3910006 | Clemson | 8,320 | <MRL | <MRL | 0.002 | Hazard Index below its limit |
| Electric City Utilities (Sc0410012) | SC0410012 | Anderson | 38,204 | <MRL | <MRL | 0.002 | Hazard Index below its limit |
| Hammond W/D (Sc0420007) | SC0420007 | Belton | 21,193 | <MRL | <MRL | 0.002 | Hazard Index below its limit |
| Homeland Park W/D (Sc0420001) | SC0420001 | Anderson | 7,328 | <MRL | <MRL | 0.002 | Hazard Index below its limit |
| Laurens Cpw (Sc3010001) | SC3010001 | Laurens | 13,902 | <MRL | <MRL | 0.002 | Hazard Index below its limit |
| Pendleton Town Of (Sc0410006) | SC0410006 | Pendleton | 5,597 | <MRL | <MRL | 0.002 | Hazard Index below its limit |
| Powdersville Water District (Sc0420002) | SC0420002 | Powdersville | 34,960 | <MRL | <MRL | 0.002 | Hazard Index below its limit |
| Sandy Springs Water Co Inc (Sc0420003) | SC0420003 | Sandy Springs | 17,311 | <MRL | <MRL | 0.002 | Hazard Index below its limit |
| West Anderson W/D (0420006) | SC0420006 | Anderson | 17,430 | <MRL | <MRL | 0.002 | Hazard Index below its limit |
| Williamston Town Of (Sc0410010) | SC0410010 | Williamston | 6,693 | <MRL | <MRL | 0.002 | Hazard Index below its limit |
| Fort Mill Town Of (Sc4610003) | SC4610003 | Fort Mill | 25,000 | <MRL | <MRL | 0 | Other PFAS detected |
| Lancaster County W&Sd (Sc2920001) | SC2920001 | Lancaster | 79,107 | <MRL | <MRL | 0 | Other PFAS detected |
| Rock Hill City Of (Sc4610002) | SC4610002 | Rock Hill | 89,850 | <MRL | <MRL | 0 | Other PFAS detected |
| Tega Cay City Of (Sc4610008) | SC4610008 | Tega Cay | 10,500 | <MRL | <MRL | 0 | Other PFAS detected |
| York City Of (Sc4610001) | SC4610001 | York | 11,137 | <MRL | <MRL | 0 | Other PFAS detected |
| York County East Wd (Sc4620002) | SC4620002 | York | 30,225 | <MRL | <MRL | 0 | Other PFAS detected |
| York County West Wd (Sc4620003) | SC4620003 | York | 18,273 | <MRL | <MRL | 0 | Other PFAS detected |
| Allendale Town Of (Sc0310001) | SC0310001 | Allendale | 3,882 | <MRL | <MRL | 0 | No PFAS detected |
| Alligator Rural Water | SC1320004 | Mcbee | 4,743 | <MRL | <MRL | 0 | No PFAS detected |
| Andrews Town Of (Sc2210003) | SC2210003 | Andrews | 3,450 | <MRL | <MRL | 0 | No PFAS detected |
| Bamberg Public Works (Sc0510001) | SC0510001 | Bamberg | 3,735 | <MRL | <MRL | 0 | No PFAS detected |
| Barnwell Town Of (Sc0610001) | SC0610001 | Barnwell | 4,693 | <MRL | <MRL | 0 | No PFAS detected |
| Beech Island W/D (Sc0220004) | SC0220004 | Beech Island | 8,935 | <MRL | <MRL | 0 | No PFAS detected |
| Bennettsville City Of (Sc3410001) | SC3410001 | Bennettsville | 9,168 | <MRL | <MRL | 0 | No PFAS detected |
| Bethlehem-Roanoke W/D (Sc3920003) | SC3920003 | Pickens | 6,334 | <MRL | <MRL | 0 | No PFAS detected |
| Bishopville Town Of (Sc3110001) | SC3110001 | Bishopville | 3,810 | <MRL | <MRL | 0 | No PFAS detected |
| Blue Ridge Water Co Inc (Sc2320003) | SC2320003 | Greer | 40,006 | <MRL | <MRL | 0 | No PFAS detected |
| Branchville Town Of (3810005) | SC3810005 | Branchville | 1,218 | <MRL | <MRL | 0 | No PFAS detected |
| Broad Creek Psd (Sc0720009) | SC0720009 | Hilton Head Island | 3,481 | <MRL | <MRL | 0 | No PFAS detected |
| Bucksport Water Company (Sc2620003) | SC2620003 | Conway | 17,123 | <MRL | <MRL | 0 | No PFAS detected |
| Cassatt Wtr - Kershaw/Lee Co Rwa | SC2820005 | Cassatt | 25,485 | <MRL | <MRL | 0 | No PFAS detected |
| Chesterfield Co Rural Water (Sc1320003) | SC1320003 | Chesterfield | 25,691 | <MRL | <MRL | 0 | No PFAS detected |
| Clover Town Of | SC4610006 | Clover | 8,400 | <MRL | <MRL | 0 | No PFAS detected |
| Dacusville-Cedar Rock Wt Co (Sc3920008) | SC3920008 | Pickens | 8,700 | <MRL | <MRL | 0 | No PFAS detected |
| Dalzell Water District (Sc4320001) | SC4320001 | Sumter | 3,912 | <MRL | <MRL | 0 | No PFAS detected |
| Darlington City Of (Sc1610001) | SC1610001 | Darlington | 7,142 | <MRL | <MRL | 0 | No PFAS detected |
| Darlington County W&Sa (Sc1620001) | SC1620001 | Darlington | 52,288 | <MRL | <MRL | 0 | No PFAS detected |
| Denmark City Of (Sc0510002) | SC0510002 | Denmark | 3,500 | <MRL | <MRL | 0 | No PFAS detected |
| Dillon City Of (Sc1710001) | SC1710001 | Dillon | 6,998 | <MRL | <MRL | 0 | No PFAS detected |
| Easley Combined Util (Sc3910002) | SC3910002 | Easley | 36,098 | <MRL | <MRL | 0 | No PFAS detected |
| Edgefield Co W&Sa (1920001) | SC1920001 | Edgefield | 29,200 | <MRL | <MRL | 0 | No PFAS detected |
| Edisto Beach Town Of (Sc1510006) | SC1510006 | Edisto Island | 5,848 | <MRL | <MRL | 0 | No PFAS detected |
| Gaston Rural Water Dist (Sc3220002) | SC3220002 | Gaston | 7,550 | <MRL | <MRL | 0 | No PFAS detected |
| Gcwsd Kilsock Water Sys (Sc2220002) | SC2220002 | Pawleys Island | 4,417 | <MRL | <MRL | 0 | No PFAS detected |
| Georgetown Rural Comm Wa (2220001) | SC2220001 | Georgetown | 4,941 | <MRL | <MRL | 0 | No PFAS detected |
| Gilbert-Summit Wd (3220001) | SC3220001 | Gilbert | 10,400 | <MRL | <MRL | 0 | No PFAS detected |
| Greenville Water (Sc2310001) | SC2310001 | Greenville | 426,057 | <MRL | <MRL | 0 | No PFAS detected |
| Greer Cpw | SC2310005 | Greer | 54,024 | <MRL | <MRL | 0 | No PFAS detected |
| Gsw&Sa-Marion City Of (Sc3310001) | SC3310001 | Conway | 9,104 | <MRL | <MRL | 0 | No PFAS detected |
| Hartsville City Of (Sc1610003) | SC1610003 | Hartsville | 8,711 | <MRL | <MRL | 0 | No PFAS detected |
| Hemingway Town Of (Sc4510004) | SC4510004 | Hemingway | 3,191 | <MRL | <MRL | 0 | No PFAS detected |
| High Hills | SC4320003 | Dalzell | 12,545 | <MRL | <MRL | 0 | No PFAS detected |
| Inman Campobello W/D (4220002) | SC4220002 | Inman | 41,007 | <MRL | <MRL | 0 | No PFAS detected |
| Jackson Town Of (Sc0210002) | SC0210002 | Jackson | 3,824 | <MRL | <MRL | 0 | No PFAS detected |
| Johnsonville City Of (Sc2110011) | SC2110011 | Johnsonville | 5,083 | <MRL | <MRL | 0 | No PFAS detected |
| Keowee Key Utility System Inc (3750023) | SC3750023 | Salem | 4,108 | <MRL | <MRL | 0 | No PFAS detected |
| Kingstree Town Of (Sc4510002) | SC4510002 | Kingstree | 6,009 | <MRL | <MRL | 0 | No PFAS detected |
| Lake City City Of (Sc2110007) | SC2110007 | Lake City | 9,191 | <MRL | <MRL | 0 | No PFAS detected |
| Lake View Town Of (Sc1710003) | SC1710003 | Conway | 1,293 | <MRL | <MRL | 0 | No PFAS detected |
| Lakewood Campground (Sc2660049) | SC2660049 | Myrtle Beach | 4,415 | <MRL | <MRL | 0 | No PFAS detected |
| Lamar Town Of (Sc1610004) | SC1610004 | Lamar | 1,034 | <MRL | <MRL | 0 | No PFAS detected |
| Lcf Water District (Sc4220010) | SC4220010 | Chesnee | 18,152 | <MRL | <MRL | 0 | No PFAS detected |
| Liberty City Of (Sc3910003) | SC3910003 | Liberty | 3,594 | <MRL | <MRL | 0 | No PFAS detected |
| Loris City Of (Sc2610010) | SC2610010 | Loris | 4,350 | <MRL | <MRL | 0 | No PFAS detected |
| Manning City Of (Sc1410002) | SC1410002 | Manning | 7,632 | <MRL | <MRL | 0 | No PFAS detected |
| Marco Rural Water Co (Sc3320001) | SC3320001 | Marion | 17,120 | <MRL | <MRL | 0 | No PFAS detected |
| Marlboro Water Co (Sc3420001) | SC3420001 | Bennettsville | 5,360 | <MRL | <MRL | 0 | No PFAS detected |
| Metro Subdistrict B (Sc4220003) | SC4220003 | Spartanburg | 1,851 | <MRL | <MRL | 0 | No PFAS detected |
| Montmorenci W/D (Sc0220008) | SC0220008 | Aiken | 4,006 | <MRL | <MRL | 0 | No PFAS detected |
| Mullins City Of (Sc3310002) | SC3310002 | Conway | 7,366 | <MRL | <MRL | 0 | No PFAS detected |
| New Ellenton Cpw (Sc0210007) | SC0210007 | New Ellenton | 7,517 | <MRL | <MRL | 0 | No PFAS detected |
| North Augusta City Of (Sc0210003) | SC0210003 | North Augusta | 26,125 | <MRL | <MRL | 0 | No PFAS detected |
| Pickens Water Treatment Plant Sc3910001 | SC3910001 | Pickens | 10,263 | <MRL | <MRL | 0 | No PFAS detected |
| Pioneer Rural Water Dist (Sc3720001) | SC3720001 | Westminster | 16,929 | <MRL | <MRL | 0 | No PFAS detected |
| Seneca City Of (Sc3710002) | SC3710002 | Seneca | 39,772 | <MRL | <MRL | 0 | No PFAS detected |
| Silver Lake Mhp (Sc3260022) | SC3260022 | Stockbridge | 122 | <MRL | <MRL | 0 | No PFAS detected |
| Six Mile W/D (Sc3920002) | SC3920002 | Six Mile | 14,845 | <MRL | <MRL | 0 | No PFAS detected |
| Sjwd Middle Tyger Wtp (Sc4220006) | SC4220006 | Lyman | 89,531 | <MRL | <MRL | 0 | No PFAS detected |
| South Island Psd (Sc0720001) | SC0720001 | Hilton Head Island | 18,299 | <MRL | <MRL | 0 | No PFAS detected |
| Southside W/D (3920010) | SC3920010 | Liberty | 9,568 | <MRL | <MRL | 0 | No PFAS detected |
| Spartanburg Water System (Sc4210001) | SC4210001 | Spartanburg | 166,364 | <MRL | <MRL | 0 | No PFAS detected |
| Srns Llc A-Area (Sc0230501) | SC0230501 | Aiken | 8,700 | <MRL | <MRL | 0 | No PFAS detected |
| Sumter City Of (Sc4310001) | SC4310001 | Sumter | 53,070 | <MRL | <MRL | 0 | No PFAS detected |
| Sws-Landrum Wtp (Sc4210003) | SC4210003 | Spartanburg | 5,143 | <MRL | <MRL | 0 | No PFAS detected |
| Trico Water Company (Sc1720001) | SC1720001 | Dillon | 17,963 | <MRL | <MRL | 0 | No PFAS detected |
| Valley Psa (Sc0220012) | SC0220012 | Gloverville | 7,752 | <MRL | <MRL | 0 | No PFAS detected |
| Walhalla City Of (Sc3710004) | SC3710004 | Walhalla | 16,010 | <MRL | <MRL | 0 | No PFAS detected |
| Walterboro City Of (1510004) | SC1510004 | Walterboro | 11,829 | <MRL | <MRL | 0 | No PFAS detected |
| Wcwsa (Sc4510007) | SC4510007 | Kingstree | 8,636 | <MRL | <MRL | 0 | No PFAS detected |
| West Pelzer Town Of (Sc0410009) | SC0410009 | Greenville | 0 | <MRL | <MRL | 0 | No PFAS detected |
| Westminster City Of (Sc3710003) | SC3710003 | Westminster | 9,588 | <MRL | <MRL | 0 | No PFAS detected |
Highest single result for each system; PFOA and PFOS in ppt (ng/L). Entry-point samples, not tap water; screening comparisons, not compliance determinations.