| ROBESON COUNTY WATER SYSTEM Groundwater | NC0378055 | 11 | 3 | |
| BAYLEAF MASTER Groundwater | NC0392373 | 10 | 3 | |
| GREENSBORO, CITY OF Surface Water | NC0241010 | 9 | 3 | |
| FAYETTEVILLE PUBLIC WORKS COMM Surface Water | NC0326010 | 9 | 3 | |
| BROOKWOOD COMM WTR SYSTEM Groundwater | NC0326127 | 8 | 3 | |
| CLIFFDALE WEST Groundwater | NC0326332 | 7 | 3 | |
| NASHVILLE, TOWN OF Surface Water | NC0464020 | 7 | 3 | |
| IREDELL WATER CORPORATION Groundwater | NC0149025 | 9 | 2 | |
| FUQUAY-VARINA, TOWN OF Surface Water | NC0392055 | 9 | 2 | |
| OAK ISLAND, TOWN OF Surface Water | NC0410020 | 9 | 2 | |
| OCEAN ISLE BEACH, TOWN OF Surface Water | NC0410035 | 9 | 2 | |
| BRUNSWICK COUNTY WATER SYSTEM Surface Water | NC0410045 | 9 | 2 | |
| JAMESTOWN, TOWN OF Surface Water | NC0241030 | 8 | 2 | |
| ASHEBORO, CITY OF Surface Water | NC0276010 | 8 | 2 | |
| RANDLEMAN, CITY OF Surface Water | NC0276015 | 8 | 2 | |
| ARCHDALE, CITY OF Surface Water | NC0276030 | 8 | 2 | |
| SPRING LAKE, TOWN OF Surface Water | NC0326020 | 8 | 2 | |
| DUNN, CITY OF Surface Water | NC0343010 | 8 | 2 | |
| ANGIER, TOWN OF Surface Water | NC0343015 | 8 | 2 | |
| LILLINGTON WATER SYSTEM Surface Water | NC0343025 | 8 | 2 | |
| HOKE CO REGIONAL--ROCKFISH Surface Water | NC0347030 | 8 | 2 | |
| BENSON, TOWN OF Surface Water | NC0351025 | 8 | 2 | |
| JOHNSTON CO-WEST Surface Water | NC0351070 | 8 | 2 | |
| FLOWERS PLANTATION Surface Water | NC0351195 | 8 | 2 | |
| SANFORD, CITY OF Surface Water | NC0353010 | 8 | 2 | |
| CAROLINA TRACE WATER SYSTEM Surface Water | NC0353101 | 8 | 2 | |
| MOORE CO PUBLIC UTIL-PINEHURST Surface Water | NC0363108 | 8 | 2 | |
| HOLLY SPRINGS, TOWN OF Surface Water | NC0392050 | 8 | 2 | |
| JOHNSTON CO-EAST Surface Water | NC4051018 | 8 | 2 | |
| OLD NORTH UTILITIES SERVICES/FT BRAGG Surface Water | NC5026019 | 8 | 2 | |
| EASTOVER SANITARY DISTRICT Surface Water | NC5026027 | 8 | 2 | |
| BRAGG COMMUNITIES/NTA Surface Water | NC5043001 | 8 | 2 | |
| EAST MOORE WATER DISTRICT Groundwater | NC5063011 | 8 | 2 | |
| BURLINGTON, CITY OF Surface Water | NC0201010 | 7 | 2 | |
| SMITHFIELD FRESH MEATS CORP - TAR HEEL Surface Water | NC0309527 | 7 | 2 | |
| HARNETT REGIONAL WATER Surface Water | NC0343045 | 7 | 2 | |
| SELMA, TOWN OF Groundwater | NC0351015 | 7 | 2 | |
| HOLDEN BEACH, TOWN OF Surface Water | NC0410060 | 7 | 2 | |
| KINSTON, CITY OF Surface Water | NC0454010 | 7 | 2 | |
| NORTH LENOIR WATER CORP Surface Water | NC0454025 | 7 | 2 | |
| DEEP RUN WATER CORPORATION Surface Water | NC0454030 | 7 | 2 | |
| EASTERN PINES WATER CORP MX | NC0474015 | 7 | 2 | |
| AYDEN TOWN OF Surface Water | NC0474025 | 7 | 2 | |
| GRIFTON, TOWN OF Groundwater | NC0474035 | 7 | 2 | |
| BELL ARTHUR WATER CORP Groundwater | NC0474045 | 7 | 2 | |
| GRASSY POND WATER CORPORATION Surface Water | NC2023003 | 7 | 2 | |
| HIGH POINT, CITY OF Surface Water | NC0241020 | 6 | 2 | |
| SMITHFIELD NC, TOWN OF Surface Water | NC0351010 | 6 | 2 | |
| SOUTHGATE S/D Surface Water | NC0351185 | 6 | 2 | |
| ABERDEEN, TOWN OF Groundwater | NC0363020 | 6 | 2 | |
| GREENVILLE UTILITIES COMM Surface Water | NC0474010 | 6 | 2 | |
| GOLDSBORO, CITY OF Surface Water | NC0496010 | 6 | 2 | |
| SEYMOUR JOHNSON AFB Surface Water | NC0496055 | 6 | 2 | |
| SELMA, TOWN OF (COUNTY LINE) Surface Water | NC4051009 | 6 | 2 | |
| UNION COUNTY WATER SYSTEM Surface Water | NC0190413 | 5 | 2 | |
| GRAHAM, CITY OF Surface Water | NC0201015 | 5 | 2 | |
| MEBANE, CITY OF Surface Water | NC0201018 | 5 | 2 | |
| CLAYTON, TOWN OF Surface Water | NC0351020 | 5 | 2 | |
| ORANGE-ALAMANCE WATER SYSTEM Surface Water | NC0368020 | 5 | 2 | |
| ROCKINGHAM, CITY OF Surface Water | NC0377015 | 5 | 2 | |
| WINTERVILLE, TOWN OF Surface Water | NC0474040 | 5 | 2 | |
| STOKES REGIONAL WATER CORP Groundwater | NC0474060 | 5 | 2 | ⚠ High Risk |
| SILER CITY, TOWN OF Surface Water | NC0319010 | 4 | 2 | |
| DURHAM, CITY OF Surface Water | NC0332010 | 4 | 2 | |
| LUMBERTON, CITY OF MX | NC0378010 | 4 | 2 | |
| WAYNE WATER DISTRICTS PURCHASE Surface Water | NC6096001 | 4 | 2 | |
| ELON, TOWN OF Surface Water | NC0201025 | 3 | 2 | |
| HAMLET WATER SYSTEM Surface Water | NC0377010 | 3 | 2 | |
| CENTRAL NASH WATER & SEWER Surface Water | NC4064005 | 3 | 2 | |
| SOUTH GRANVILLE WTR&SEWER AUTHORITY Surface Water | NC0239107 | 2 | 2 | |
| ORANGE WATER & SEWER AUTHORITY Surface Water | NC0368010 | 2 | 2 | |
| TARBORO, TOWN OF Surface Water | NC0433010 | 2 | 2 | |
| EDGECOMBE WATER & SEWER DISTRICT Surface Water | NC0433050 | 2 | 2 | |
| ROCKY MOUNT, CITY OF Surface Water | NC0464010 | 2 | 2 | |
| BESSEMER CITY, CITY OF Surface Water | NC0136025 | 7 | 1 | |
| DALLAS, TOWN OF Surface Water | NC0136065 | 6 | 1 | |
| LAMPLIGHTER SOUTH-DANBY Surface Water | NC0160156 | 6 | 1 | |
| RICHMOND COUNTY WATER SYSTEM Surface Water | NC0377109 | 6 | 1 | |
| HARRISBURG, TOWN OF Surface Water | NC0113025 | 5 | 1 | |
| DIAMOND HEAD S/D Groundwater | NC0149182 | 5 | 1 | |
| RALEIGH, CITY OF Surface Water | NC0392010 | 5 | 1 | |
| LINCOLNTON, CITY OF Surface Water | NC0155010 | 4 | 1 | |
| WINGATE, TOWN OF Surface Water | NC0190030 | 4 | 1 | |
| HANDY SANITARY DISTRICT Surface Water | NC0229035 | 4 | 1 | |
| ANSON COUNTY WATER SYSTEM Surface Water | NC0304010 | 4 | 1 | |
| WADESBORO, TOWN OF Surface Water | NC0304020 | 4 | 1 | |
| HOKE CO REGIONAL WATER SYSTEM Groundwater | NC0347025 | 4 | 1 | |
| SOUTHERN MIDDLE SCHOOL Groundwater | NC3041076 | 4 | 1 | |
| LINCOLN COUNTY WTP Surface Water | NC0155035 | 3 | 1 | |
| CHINA GROVE, TOWN OF Surface Water | NC0180040 | 3 | 1 | |
| ALBEMARLE, CITY OF Surface Water | NC0184010 | 3 | 1 | |
| PFEIFFER-N STANLY WATER ASSOC Surface Water | NC0184025 | 3 | 1 | |
| STANLY CO-WEST STANLY DIST Surface Water | NC0184035 | 3 | 1 | |
| FARM WATER WORKS Groundwater | NC0353127 | 3 | 1 | |
| TROY, TOWN OF Surface Water | NC0362020 | 3 | 1 | |
| CONCORD, CITY OF Surface Water | NC0113010 | 2 | 1 | |
| NORWOOD, TOWN OF Surface Water | NC0184015 | 2 | 1 | |
| OXFORD, CITY OF Surface Water | NC0239010 | 2 | 1 | |
| GIBSONVILLE, TOWN OF Surface Water | NC0241025 | 2 | 1 | |
| BLADEN CO WTR DIST-EAST BLADEN Groundwater | NC0309060 | 2 | 1 | |
| MONTGOMERY COUNTY WATER SYSTEM Surface Water | NC0362010 | 2 | 1 | |
| LITTLETON, TOWN OF Surface Water | NC0442028 | 2 | 1 | |
| WILLIAMSTON, TOWN OF Surface Water | NC0459010 | 2 | 1 | |
| MAIDEN, TOWN OF Surface Water | NC0118030 | 1 | 1 | |
| KANNAPOLIS, CITY OF Surface Water | NC0180065 | 1 | 1 | |
| THOMASVILLE, CITY OF Surface Water | NC0229020 | 1 | 1 | |
| LAKE ROYALE S/D Surface Water | NC0235108 | 1 | 1 | |
| ROXBORO, CITY OF Surface Water | NC0273010 | 1 | 1 | |
| HENDERSON-KERR LAKE REG WTR Surface Water | NC0291010 | 1 | 1 | |
| WARREN COUNTY WATER SYSTEM Surface Water | NC0293015 | 1 | 1 | |
| NEWPORT WATER SYSTEM Groundwater | NC0416020 | 1 | 1 | |
| GREENE CO REGIONAL WATER SYST Surface Water | NC0440106 | 1 | 1 | |
| ROANOKE RAPIDS SANITARY DIST Surface Water | NC0442010 | 1 | 1 | |
| HALIFAX CO--HALIFAX Surface Water | NC0442040 | 1 | 1 | |
| NORTHAMPTON--LAKE GASTON Surface Water | NC0466110 | 1 | 1 | |
| HARBOUR POINT S/D Groundwater | NC0149185 | 4 | 0 | |
| CARY, TOWN OF Surface Water | NC0392020 | 4 | 0 | |
| APEX, TOWN OF Surface Water | NC0392045 | 4 | 0 | |
| PENDER COUNTY UTILITIES Surface Water | NC7071011 | 4 | 0 | |
| PITTSBORO, TOWN OF Surface Water | NC0319015 | 3 | 0 | |
| CFPUA/MONTEREY HEIGHTS Groundwater | NC0465137 | 3 | 0 | |
| THE CAPE MASTER SYSTEM Groundwater | NC0465199 | 3 | 0 | |
| SOUTHERN WAYNE SANITARY DIST Groundwater | NC0496045 | 3 | 0 | |
| KINGS MOUNTAIN, TOWN OF Surface Water | NC0123020 | 2 | 0 | |
| BELMONT, CITY OF Surface Water | NC0136015 | 2 | 0 | |
| OLD FORT, TOWN OF Groundwater | NC0156025 | 2 | 0 | |
| CHARLOTTE WATER Surface Water | NC0160010 | 2 | 0 | |
| MONROE, CITY OF Surface Water | NC0190010 | 2 | 0 | |
| CHATHAM CO-NORTH Surface Water | NC0319126 | 2 | 0 | |
| MEADOW LAKE S/D Groundwater | NC0392159 | 2 | 0 | |
| Wrightsville Beach Water Groundwater | NC0465020 | 2 | 0 | |
| FARMVILLE, TOWN OF Groundwater | NC0474020 | 2 | 0 | |
| NEWTON NC, CITY OF Surface Water | NC0118015 | 1 | 0 | |
| WEST IREDELL WATER CORPORATION Surface Water | NC0149158 | 1 | 0 | |
| BROAD RIVER WATER AUTHORITY Surface Water | NC0181035 | 1 | 0 | |
| CONNESTEE FALLS Groundwater | NC0188104 | 1 | 0 | |
| BOONE, TOWN OF Surface Water | NC0195010 | 1 | 0 | |
| WEST WILKES WTR ASSOCIATION INC Surface Water | NC0197020 | 1 | 0 | |
| BLUE RIDGE WATER ASSOCIATION Surface Water | NC0197030 | 1 | 0 | |
| MOCKSVILLE, TOWN OF Surface Water | NC0230010 | 1 | 0 | |
| CHILDRENS CHOICE CHILDCARE Groundwater | NC0241647 | 1 | 0 | |
| REIDSVILLE, CITY OF Surface Water | NC0279020 | 1 | 0 | |
| YADKINVILLE, TOWN OF Surface Water | NC0299015 | 1 | 0 | |
| ELIZABETHTOWN, TOWN OF Groundwater | NC0309010 | 1 | 0 | |
| WASHINGTON, CITY OF Groundwater | NC0407010 | 1 | 0 | |
| BEAUFORT CO SOUTHSIDE Groundwater | NC0407040 | 1 | 0 | |
| BERTIE COUNTY REGIONAL WATER Groundwater | NC0408085 | 1 | 0 | |
| BEAUFORT, TOWN OF Groundwater | NC0416010 | 1 | 0 | |
| BOGUE BANKS WATER CORPORATION Groundwater | NC0416028 | 1 | 0 | |
| PINE KNOLL SHORES Groundwater | NC0416031 | 1 | 0 | |
| ATLANTIC BEACH, TOWN OF Groundwater | NC0416035 | 1 | 0 | |
| EDENTON, TOWN OF Groundwater | NC0421010 | 1 | 0 | |
| WHITEVILLE, CITY OF Groundwater | NC0424010 | 1 | 0 | |
| FIRST CRAVEN SANITARY DISTRICT Groundwater | NC0425040 | 1 | 0 | |
| FAIRFIELD HARBOUR Groundwater | NC0425132 | 1 | 0 | |
| GATES COUNTY WATER SYSTEM Groundwater | NC0437020 | 1 | 0 | |
| AHOSKIE, TOWN OF Groundwater | NC0446010 | 1 | 0 | |
| JONES COUNTY WATER SYSTEM Groundwater | NC0452020 | 1 | 0 | |
| CFPUA-WILMINGTON Surface Water | NC0465010 | 1 | 0 | |
| CAROLINA BEACH WATER SYSTEM Groundwater | NC0465015 | 1 | 0 | |
| KURE BEACH WATER SYSTEM Groundwater | NC0465025 | 1 | 0 | |
| JACKSONVILLE CITY OF Groundwater | NC0467010 | 1 | 0 | |
| ONSLOW WTR AND SEWER AUTHORITY Groundwater | NC0467035 | 1 | 0 | |
| USMC LEJEUNE--NEW RIVER AIR ST Groundwater | NC0467042 | 1 | 0 | |
| PAMLICO COUNTY WATER Groundwater | NC0469025 | 1 | 0 | |
| ELIZABETH CITY, CITY OF Groundwater | NC0470010 | 1 | 0 | |
| PASQUOTANK COUNTY WATER SYSTEM Groundwater | NC0470015 | 1 | 0 | |
| BURGAW, TOWN OF Groundwater | NC0471010 | 1 | 0 | |
| PERQUIMANS COUNTY WATER SYSTEM Groundwater | NC0472025 | 1 | 0 | |
| PLYMOUTH WATER SYSTEM Groundwater | NC0494010 | 1 | 0 | |
| WASHINGTON COUNTY WATER SYSTEM Groundwater | NC0494025 | 1 | 0 | |
| FORK TOWNSHIP SANITARY DISTRICT Groundwater | NC0496060 | 1 | 0 | |
| WAYNE WATER DISTRICTS Groundwater | NC0496065 | 1 | 0 | |
| WILSON CO SOUTHWEST WATER DIST Groundwater | NC4098012 | 1 | 0 | |
| SOUTHERN OUTER BANKS WTR SYST Groundwater | NC6027001 | 1 | 0 | |
| COLUMBUS CO WATER DISTRICT II Groundwater | NC7024007 | 1 | 0 | |