We found 246 public water systems that could serve the same population as Old Post Office Restaurant (1070247) (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Charleston Water System (1010001) | Charleston | 230,852 | 37 | 19 |
| Mt Pleasant Water Works (1010002) | Mount Pleasant | 72,166 | 40 | 3 |
| St John's Water (1020002) | Johns Island | 12,904 | 37 | 6 |
| Isle Of Palms W/s Comm (1010004) | Isle Of Palms | 8,442 | 0 | 11 |
| Kiawah Island Utility (sc1010008) | Johns Island | 8,005 | 0 | 4 |
| Seabrook Island Town Of (1010009) | Seabrook | 5,556 | 0 | 5 |
| Isle Of Palms W/s Comm | County of Charleston | 4,359 | 0 | 0 |
| Seabrook Island | County of Charleston | 3,924 | 0 | 0 |
| Bull's Bay W/d | County of Charleston | 3,721 | 0 | 0 |
| Folly Beach City Of (1010005) | Folly Beach | 3,656 | 0 | 12 |
| Charleston Afb | County of Charleston | 2,999 | 0 | 0 |
| Charleston Southern Univ | County of Charleston | 2,300 | 0 | 0 |
| Sullivans Island Town Of (1010003) | Sullivans Island | 2,243 | 0 | 4 |
| Weapons Sta Charleston | County of Charleston | 1,700 | 0 | 0 |
| Kiawah Island Utility In | County of Charleston | 1,500 | 0 | 0 |
| Twin B Mobile Manor | County of Charleston | 1,026 | 0 | 0 |
| Charleston Naval Shipyrd | County of Charleston | 925 | 0 | 0 |
| Lincolnville Town Of (1010007) | Lincolnville | 848 | 0 | 18 |
| Bapt Hill Sch | County of Charleston | 767 | 0 | 0 |
| Rd Schroeder #2 | County of Charleston | 615 | 0 | 0 |
| Awendaw Town Of (sc1010504) | Awendaw | 473 | 0 | 0 |
| Heritage Village | County of Charleston | 390 | 0 | 0 |
| Janie Moore School | County of Charleston | 383 | 0 | 0 |
| Oceanside Collegiate Academy(1070103) | Mcclellanville | 350 | 0 | 0 |
| Cc Blaney School | County of Charleston | 350 | 0 | 0 |
| Eb Ellington School | County of Charleston | 340 | 0 | 0 |
| E Frierson School (1070115) | Wadmalaw Island | 281 | 0 | 2 |
| St James School (1070143) | County of Charleston | 240 | 0 | 8 |
| Minnie Hughes Elementary (1070124) | Yonges Island | 227 | 0 | 4 |
| Camp Ho Non Wah (1070675) | County of Charleston | 200 | 0 | 7 |
| Cape Romain School (1070140) | Mcclellanville | 198 | 0 | 17 |
| Burbage Brothers Mhp (1060063) | Ravenel | 158 | 0 | 7 |
| Jane Edwards Elementary (1070122) | Edisto | 100 | 0 | 0 |
| Metal Trades Inc | County of Charleston | 100 | 0 | 0 |
| Jericho Trailer Park (1060061) | Adams Run | 95 | 0 | 0 |
| P Gwyan Gen Mgr | County of Charleston | 90 | 0 | 0 |
| St Paul's Academy | County of Charleston | 80 | 0 | 0 |
| M&m Mini Mart (1072006) | County of Charleston | 75 | 0 | 0 |
| Lake Aire Rv Park Llc (1070804) | Hollywood | 75 | 0 | 0 |
| Wa Burbage Trailer Park 1 (1060014) | Ravenel | 74 | 0 | 0 |
| Ems Medic 6/magistrate Court (1079003) | County of Charleston | 72 | 0 | 0 |
| Steinberg Center | County of Charleston | 71 | 0 | 0 |
| Wetlands Truck Stop | County of Charleston | 70 | 0 | 0 |
| Larimer Center | County of Charleston | 68 | 0 | 0 |
| St Lukes Ctr | County of Charleston | 62 | 0 | 0 |
| Dollar General-mcclellanville(sc1070008) | Mcclellanville | 60 | 0 | 0 |
| Wm. E Walpole Labor Camp | County of Charleston | 60 | 0 | 0 |
| Tumbleton's Labor Camp | County of Charleston | 60 | 0 | 0 |
| East Cooper Child Care C | County of Charleston | 60 | 0 | 0 |
| Tall Pines Cpgd | County of Charleston | 56 | 0 | 0 |
| Too Goo Doo Farms Inc | County of Charleston | 55 | 0 | 0 |
| Esau Jenkins | County of Charleston | 55 | 0 | 0 |
| The Crab Pot (sc1070236) | County of Charleston | 50 | 0 | 0 |
| Sewee Coastal Retreat Center (1070677) | County of Charleston | 50 | 0 | 0 |
| Thackeray Farms | County of Charleston | 50 | 0 | 0 |
| T G Davis Labor Camp | County of Charleston | 50 | 0 | 0 |
| Creative Counter Tops (1040001) | Awendaw | 50 | 0 | 0 |
| Circle K 2720878 (1070913) | Mcclellanville | 49 | 0 | 0 |
| Tumbleton Farms-edisto | County of Charleston | 48 | 0 | 0 |
| Wadmalaw Head Start Ctr | County of Charleston | 46 | 0 | 0 |
| Little Rockers | County of Charleston | 42 | 0 | 0 |
| T W Graham Co (1072002) | County of Charleston | 40 | 0 | 0 |
| Boone Hall Plantation (1070916) | Mount Pleasant | 40 | 0 | 0 |
| Oyster Park Poa (1070256) | Edisto Beach | 40 | 0 | 0 |
| Parkers Ferry Head Start | County of Charleston | 40 | 0 | 0 |
| ZION DAY CARE CENTER | County of Charleston | 40 | 0 | 0 |
| Dewees Utilities (1050011) | County of Charleston | 37 | 0 | 0 |
| Salt & Pepper Trailer Pk | County of Charleston | 36 | 0 | 0 |
| Sweet Charity | County of Charleston | 35 | 0 | 0 |
| Windwood Farm Home (sc1070963) | Awendaw | 33 | 0 | 0 |
| Berkeley Electric Coop (1030028) | Awendaw | 32 | 0 | 0 |
| Wedge Planatation Ii | County of Charleston | 32 | 0 | 0 |
| ZION AME CHURCH DAY CARE | County of Charleston | 31 | 0 | 0 |
| Wadmalaw Island Comm Ctr (sc1070958) | Wadmalaw Island | 30 | 0 | 0 |
| Stoller Chemical Co | County of Charleston | 30 | 0 | 0 |
| Mcclellanville Diner (1070234) | Mcclellanville | 26 | 0 | 0 |
| Cottage The (sc1070987) | County of Charleston | 26 | 0 | 0 |
| Ez Shop 13 (1070974) | Edisto Island | 26 | 0 | 0 |
| Marvin's Meats (1030801) | Hollywood | 26 | 0 | 0 |
| Dewees Island Ro Dis Sta (1080038) | County of Charleston | 26 | 0 | 0 |
| Scprt-hampton Plantation (1070600) | Mcclellanville | 26 | 0 | 0 |
| Oak Plantation Campground (1070802) | Johns Island | 26 | 0 | 0 |
| Whole Food Market/mt Pleasant (1080065) | Mount Pleasant | 26 | 0 | 0 |
| Earth Fare Charleston (1080063) | Charleston | 26 | 0 | 0 |
| Isle Of Palms W&s Comm Ro Dispenser | Isle Of Palms | 26 | 0 | 0 |
| Buckshot Restaurant (1072010) | Mcclellanville | 26 | 0 | 0 |
| Gws-food Lion 1097 (1080076) | Charleston | 26 | 0 | 0 |
| Gws-food Lion 0252 (1080078) | Charleston | 26 | 0 | 0 |
| Gws-food Lion 1444 (1080077) | Charleston | 26 | 0 | 0 |
| Gws-food Lion 933 (1080081) | Charleston | 26 | 0 | 0 |
| Gws-walmart 1748 (1080068) | Charleston | 26 | 0 | 0 |
| Adams Run Civic Center (1070148) | County of Charleston | 26 | 0 | 0 |
| Gws-walmart 0632 (1080093) | Mount Pleasant | 26 | 0 | 0 |
| Gws-bilo 448 (1080092) | Charleston | 26 | 0 | 0 |
| Gws-dollar Tree 1153 (1080087) | North Charleston | 26 | 0 | 0 |
| Gws-walmart 4384 (1080083) | Mount Pleasant | 26 | 0 | 0 |
| Gws-food Lion 2532 (1080084) | North Charleston | 26 | 0 | 0 |
| Gws-food Lion 1691 (1080085) | Charleston | 26 | 0 | 0 |
| Gws-walmart 2348 (1080094) | Charleston | 26 | 0 | 0 |
| Deep Minimart Llc (1070915) | Mcclellanville | 26 | 0 | 0 |
| Charleston Tea Plantation (1030020) | County of Charleston | 26 | 0 | 0 |
| Gws-walmart 3713 (1080095) | Ladson | 26 | 0 | 0 |
| St James-santee Fhc Inc (1070006) | County of Charleston | 26 | 0 | 0 |
| Gws-walmart 3367 (1080067) | County of Charleston | 26 | 0 | 0 |
| Ems Medic 6/wtr Dispense (1080069) | Mount Pleasant | 26 | 0 | 0 |
| Mt Pleasant Ro Dispensing Sta#3(1080066) | County of Charleston | 26 | 0 | 0 |
| Mt Pleasant Ro Dispensing Sta#2(1080033) | County of Charleston | 26 | 0 | 0 |
| Mt Pleasant Ro Dispensing Sta#1(1080032) | County of Charleston | 26 | 0 | 0 |
| Airport Grill | County of Charleston | 26 | 0 | 0 |
| Subway Restaurant | County of Charleston | 26 | 0 | 0 |
| Carolina Seafood #2 | County of Charleston | 26 | 0 | 0 |
| Anchor Cafe | County of Charleston | 26 | 0 | 0 |
| Village Creations | County of Charleston | 26 | 0 | 0 |
| Locklear's Restaurant | County of Charleston | 26 | 0 | 0 |
| White Pt Garden | County of Charleston | 26 | 0 | 0 |
| Country View | County of Charleston | 26 | 0 | 0 |
| Middleton Inn | County of Charleston | 26 | 0 | 0 |
| Mains Market (1070971) | County of Charleston | 26 | 0 | 0 |
| Rock Pit | County of Charleston | 26 | 0 | 0 |
| The Water Source | County of Charleston | 26 | 0 | 0 |
| Seewee Outpost (1079001) | County of Charleston | 26 | 0 | 0 |
| Aws/bi-lo #118 | County of Charleston | 26 | 0 | 0 |
| Aws/bi-lo #249 | County of Charleston | 26 | 0 | 0 |
| Gws/bi Lo #118 | County of Charleston | 26 | 0 | 0 |
| Carolina Mountain Water | County of Charleston | 26 | 0 | 0 |
| Isle Of Palms Ro Unit | County of Charleston | 26 | 0 | 0 |
| Isle Of Palms Ro Unit | County of Charleston | 26 | 0 | 0 |
| WPS K-MART MT PLEASANT | County of Charleston | 26 | 0 | 0 |
| WPS K-MART JAMES ISLAND | County of Charleston | 26 | 0 | 0 |
| WPS- FOOD LION | County of Charleston | 26 | 0 | 0 |
| WPS- FOOD LION | County of Charleston | 26 | 0 | 0 |
| Aws/bi-lo #286 | County of Charleston | 26 | 0 | 0 |
| Gws/bi Lo #286 | County of Charleston | 26 | 0 | 0 |
| Gws/publix #449 | County of Charleston | 26 | 0 | 0 |
| Gws/publix #472 | County of Charleston | 26 | 0 | 0 |
| Gws/bi Lo #248 | County of Charleston | 26 | 0 | 0 |
| Gws/publix #633 | County of Charleston | 26 | 0 | 0 |
| Gws/bi Lo #247 | County of Charleston | 26 | 0 | 0 |
| Gws/bi Lo #74 | County of Charleston | 26 | 0 | 0 |
| Gws/bi Lo #266 | County of Charleston | 26 | 0 | 0 |
| Gws/bi Lo #170 | County of Charleston | 26 | 0 | 0 |
| Gws/charleston Afb | County of Charleston | 26 | 0 | 0 |
| Gws/harris Teeter #19 | County of Charleston | 26 | 0 | 0 |
| Gws/harris Teeter #275 | County of Charleston | 26 | 0 | 0 |
| Gws/bi Lo #249 | County of Charleston | 26 | 0 | 0 |
| Gws/bi Lo #288 | County of Charleston | 26 | 0 | 0 |
| Gws/food Lion #204 | County of Charleston | 26 | 0 | 0 |
| Gws/food Lion #336 | County of Charleston | 26 | 0 | 0 |
| St James Santee Sch Dispenser (1080070) | County of Charleston | 26 | 0 | 0 |
| Unknown (liz) | County of Charleston | 26 | 0 | 0 |
| Wentworth Well | County of Charleston | 26 | 0 | 0 |
| Calhoun St Well | County of Charleston | 26 | 0 | 0 |
| Martin Park-artesian Wel | County of Charleston | 26 | 0 | 0 |
| J Brown Jr | County of Charleston | 26 | 0 | 0 |
| Sc Crab Co | County of Charleston | 26 | 0 | 0 |
| WYNDHAM SEAFOOD | County of Charleston | 26 | 0 | 0 |
| Mcclell Seafood | County of Charleston | 26 | 0 | 0 |
| See Wee Supply Co. | County of Charleston | 26 | 0 | 0 |
| Massenberg Meat | County of Charleston | 26 | 0 | 0 |
| Morris Crab Co | County of Charleston | 26 | 0 | 0 |
| Fort's Meat Market | County of Charleston | 26 | 0 | 0 |
| Sea Island Adm Blg | County of Charleston | 26 | 0 | 0 |
| Middleton Place | County of Charleston | 26 | 0 | 0 |
| Kelly's Bbq | County of Charleston | 26 | 0 | 0 |
| B Shealy | County of Charleston | 26 | 0 | 0 |
| H'wood Kitchen | County of Charleston | 26 | 0 | 0 |
| Krispy Kreme | County of Charleston | 26 | 0 | 0 |
| Ruthies Rest | County of Charleston | 26 | 0 | 0 |
| Village Seafood | County of Charleston | 26 | 0 | 0 |
| Cappie Seafood | County of Charleston | 26 | 0 | 0 |
| Sterling Seafood | County of Charleston | 26 | 0 | 0 |
| L Mcquen | County of Charleston | 26 | 0 | 0 |
| Hewitt Co Of Ravenel Llc (1079030) | Ravenel | 25 | 0 | 0 |
| Charleston Zipline Adventures (sc1074003 | Awendaw | 25 | 0 | 0 |
| Deep Water Vineyard (1079011) | Wadmalaw Island | 25 | 0 | 0 |
| Capt Jimmy Bells Rotb (sc1072014) | Hollywood | 25 | 0 | 0 |
| Edisto Island Serpentarium (1070684) | Edisto Island | 25 | 0 | 0 |
| Cape Romain Nwr Seewee V (1070678) | County of Charleston | 25 | 0 | 0 |
| Carolina Mountain Water | County of Charleston | 25 | 0 | 0 |
| Lakeview Tr Pk | County of Charleston | 24 | 0 | 0 |
| St James South Santee Co (1070968) | County of Charleston | 24 | 0 | 0 |
| Buckshot Carry Out (1072008)s3 | County of Charleston | 24 | 0 | 0 |
| Trinity Episcopal Church (1079013) | Charleston | 24 | 0 | 0 |
| S Santee Grmntwn Fs Disp (1080071) | Mount Pleasant | 24 | 0 | 0 |
| Salem Day Ctr | County of Charleston | 22 | 0 | 0 |
| Bowles Com Home | County of Charleston | 16 | 0 | 0 |
| Carolina Seafood #3 (1070246) | County of Charleston | 15 | 0 | 0 |
| Carolina Seafood #1 (1070249) | County of Charleston | 15 | 0 | 0 |
| Bishop Jerden Conference Ctr (1070960) | County of Charleston | 14 | 0 | 0 |
| Botany Bay Apts | County of Charleston | 13 | 0 | 0 |
| Usfs Elmwood Hunt Camp (1070650) | County of Charleston | 10 | 0 | 0 |
| Usfs Buckhall Rec Area (1070652) | County of Charleston | 10 | 0 | 0 |
| Usfs Halfway Creek Camp (1070656) | County of Charleston | 10 | 0 | 0 |
| Edisto Center (1070908) | County of Charleston | 10 | 0 | 0 |
| Senior Nutrition Program (1079017) | Johns Island | 10 | 0 | 0 |
| Cape Romain New - Moores (1070653) | County of Charleston | 9 | 0 | 0 |
| Meadwestvaco Nursery (1030007) | County of Charleston | 8 | 0 | 0 |
| Bull Bay Seafood (1030011) | County of Charleston | 7 | 0 | 0 |
| W A Burbage Meat | County of Charleston | 6 | 0 | 0 |
| Van Dyke Seafood | County of Charleston | 6 | 0 | 0 |
| Low Country Produce (1070959) | Wadmalaw Island | 5 | 0 | 0 |
| Porchers School (1070105)s3 | County of Charleston | 5 | 0 | 0 |
| Bull's Bay Seafood Wshdn | County of Charleston | 3 | 0 | 0 |
| International Center | County of Charleston | 3 | 0 | 0 |
| Funky Little Kitchen (1072009)s3 | Awendaw | 3 | 0 | 0 |
| St Thomas Point S/d | Counties of Berkeley, Charleston | 0 | 0 | 0 |
| Usfs Wambaw Wk Ctr (1070654)s3 | County of Charleston | 0 | 0 | 0 |
| Mt Pleasant Regional Airport (1070910) | County of Charleston | 0 | 0 | 0 |
| Edisto Island Community (1070921) | County of Charleston | 0 | 0 | 0 |
| Palmetto Store The (1070922) | Mcclellanville | 0 | 0 | 0 |
| Kangaroo Express 879 (1070985) | County of Charleston | 0 | 0 | 0 |
| Outward Bound | County of Charleston | 0 | 0 | 0 |
| Sunny Point Farms | County of Charleston | 0 | 0 | 0 |
| See Wee Supply Co (1072001) | County of Charleston | 0 | 0 | 0 |
| Lj Convenience Store (sc1072007) | County of Charleston | 0 | 0 | 0 |
| Aqua-vend/gambles Redwhi | County of Charleston | 0 | 0 | 0 |
| Aqua-vend/009 | County of Charleston | 0 | 0 | 0 |
| Aqua-vend/011 | County of Charleston | 0 | 0 | 0 |
| Aqua-vend/013 | County of Charleston | 0 | 0 | 0 |
| Gws-dollar Tree 0825 (1080088) | Charleston | 0 | 0 | 0 |
| Gws-bilo 101 (1080089) | Mount Pleasant | 0 | 0 | 0 |
| Gws-bilo 286 (1080090) | Mount Pleasant | 0 | 0 | 0 |
| Aqua-vend/027 | County of Charleston | 0 | 0 | 0 |
| Aqua-vend/028 | County of Charleston | 0 | 0 | 0 |
| Aqua-vend/030 | County of Charleston | 0 | 0 | 0 |
| Aqua-vend/isle Of Palms2 | County of Charleston | 0 | 0 | 0 |
| Sullivans Isl Ro Unit | County of Charleston | 0 | 0 | 0 |
| Earth Fare Mt Pleasant | County of Charleston | 0 | 0 | 0 |
| Gws-food Lion 2005 (1080072) | Mount Pleasant | 0 | 0 | 0 |
| Gws-food Lion 1697 (1080073) | Mount Pleasant | 0 | 0 | 0 |
| Gws-food Lion 1255 (1080074) | Mount Pleasant | 0 | 0 | 0 |
| Gws-food Lion 1183 (1080075) | Charleston | 0 | 0 | 0 |
| Gws-food Lion 336 (1080080) | Charleston | 0 | 0 | 0 |
| Gws-food Lion 1499 (1080082) | Johns Island | 0 | 0 | 0 |
| Gws-publix 0824 (1080086) | Charleston | 0 | 0 | 0 |
| Gws-bilo 410 (1080091) | Mount Pleasant | 0 | 0 | 0 |
| Century Oaks | County of Charleston | 0 | 0 | 0 |
| Detyens Ship Yard (1030005) | County of Charleston | 0 | 0 | 0 |
| Island Estates | County of Charleston | 0 | 0 | 0 |
| Dunmovin S/d | County of Charleston | 0 | 0 | 0 |
| Ravenel Mhp | County of Charleston | 0 | 0 | 0 |
| Watts Mhp | County of Charleston | 0 | 0 | 0 |
| Edisto United Pres Child | County of Charleston | 0 | 0 | 0 |
| Awendaw Town Hall (1070149) | County of Charleston | 0 | 0 | 0 |
| Webb's Restaurant | County of Charleston | 0 | 0 | 0 |
| Roadrunner | County of Charleston | 0 | 0 | 0 |