| LAKESHORE TERRACE CORPORATION | | 123 | 0.0620 mg/L |
| HOLLER SUBDIVISION | | 145 | 0.0609 mg/L |
| NASSAU WOODS MOBILE HOME PARK | POOLER | 772 | 0.0552 mg/L |
| TCPSA - BIG CREEK/COALDAN | | 158 | 0.0517 mg/L |
| NASA WALLOPS FLIGHT FACILITY | | 1,625 | 0.0480 mg/L |
| OVERLOOK HEIGHTS COMBINED | | 160 | 0.0464 mg/L |
| AMHERST, TOWN OF | | 2,231 | 0.0459 mg/L |
| SHORE HEALTH AND REHABILITATION CENTER | | 150 | 0.0428 mg/L |
| RODES FARM | | 40 | 0.0417 mg/L |
| NCSA - WINTERGREEN | | 6,861 | 0.0415 mg/L |
| STAFFORD COUNTY UTILITIES | | 123,684 | 0.0413 mg/L |
| MILLER SCHOOL | | 250 | 0.0371 mg/L |
| CHALET HIGH, INC | | 340 | 0.0366 mg/L |
| AMHERST CO SERVICE AUTHORITY (ACSA) | | 14,799 | 0.0360 mg/L |
| FIELDCREST MANUFACTURED HOME COMMUNITY | | 130 | 0.0360 mg/L |
| NORTHEAST REGIONAL WATER SYSTEMS | | 3,214 | 0.0344 mg/L |
| ROUTE 100 AREA | | 295 | 0.0330 mg/L |
| SESMAU JERDONE ISLAND | | 50 | 0.0302 mg/L |
| RIVER PARK | | 100 | 0.0284 mg/L |
| DOCKSIDE HEALTH & REHAB CENTER | | 150 | 0.0280 mg/L |
| FAIRVIEW ACRES COMMUNITY CLUB | | 124 | 0.0280 mg/L |
| MINERAL, TOWN OF | | 478 | 0.0280 mg/L |
| CORVILLE FARM SUBDIVISION | | 27 | 0.0274 mg/L |
| OAK PARK SUBDIVISION | | 60 | 0.0271 mg/L |
| CEDARBROOKE SUBDIVISION | | 163 | 0.0259 mg/L |
| GALAX, CITY OF | GALAX CITY | 6,837 | 0.0245 mg/L |
| LOUDOUN WATER - CENTRAL SYSTEM | | 334,808 | 0.0244 mg/L |
| TAZEWELL, TOWN OF | | 5,007 | 0.0239 mg/L |
| CHINCOTEAGUE, TOWN OF | | 3,344 | 0.0237 mg/L |
| ALBERTA, TOWN OF | | 300 | 0.0235 mg/L |
| MIDDLETOWN, TOWN OF | | 1,390 | 0.0234 mg/L |
| WASHINGTON, TOWN OF | | 198 | 0.0233 mg/L |
| LITTLE CREEK AMPHIBIOUS BASE - U.S. NAVY | VIRGINIA BEACH CITY | 9,782 | 0.0232 mg/L |
| VIRGINIA INTERNATIONAL RACEWAY | | 466 | 0.0228 mg/L |
| FAITH MISSION HOME | | 95 | 0.0228 mg/L |
| MOUNTAIN REST ESTATES | | 150 | 0.0227 mg/L |
| PLAINS, THE | | 566 | 0.0224 mg/L |
| VISTA POINTE LANDING | | 115 | 0.0218 mg/L |
| RANDLE RIDGE | | 57 | 0.0213 mg/L |
| DAM NECK - U.S. NAVY | VIRGINIA BEACH CITY | 3,000 | 0.0206 mg/L |
| MOSSY ACRES | | 145 | 0.0196 mg/L |
| COTTAGE EDGE | | 80 | 0.0194 mg/L |
| BAPTIST VALLEY | | 3,857 | 0.0193 mg/L |
| PALMYRA | | 90 | 0.0192 mg/L |
| WOODBERRY FOREST SCHOOL | | 739 | 0.0190 mg/L |
| ALDIE WATER COMPANY | | 70 | 0.0180 mg/L |
| CHARLOTTE COURTHOUSE, TOWN OF | | 1,975 | 0.0180 mg/L |
| MANAKIN FARMS | | 948 | 0.0180 mg/L |
| GLOUCESTER COUNTY WATER SYSTEM | | 10,754 | 0.0178 mg/L |
| JONES ACRES MOBILE HOME PARK | | 116 | 0.0175 mg/L |
| TWIN OAKS COMMUNITY | | 70 | 0.0173 mg/L |
| RADFORD ARMY AMMUNITION PLANT | | 1,602 | 0.0172 mg/L |
| HOGES CHAPEL | | 1,114 | 0.0170 mg/L |
| LURAY HOMES | | 81 | 0.0170 mg/L |
| NININGER WATERWORKS | | 62 | 0.0168 mg/L |
| NRV REGIONAL WATER AUTHORITY | | 0 | 0.0168 mg/L |
| CAROLINE CORRECTIONAL UNIT #2 | | 175 | 0.0168 mg/L |
| PEARISBURG, TOWN OF | | 2,760 | 0.0168 mg/L |
| VA AMERICAN WATER GREENFIELD HARBOR II | | 43 | 0.0165 mg/L |
| ORANGE, TOWN OF | | 5,022 | 0.0164 mg/L |
| LAKE MONTICELLO | | 12,943 | 0.0162 mg/L |
| LANGFORD SUBDIVISION | | 97 | 0.0161 mg/L |
| THE MEADOWS | | 89 | 0.0160 mg/L |
| PINE GROVE MOBILE HOME PARK | | 80 | 0.0158 mg/L |
| NAVAL STATION NORFOLK | NORFOLK CITY | 48,826 | 0.0157 mg/L |
| KNOLL WOODS/IVY ACRES | | 360 | 0.0155 mg/L |
| FREDERICK ACRES | | 67 | 0.0154 mg/L |
| CLARKE COUNTY SANITARY AUTHORITY | | 1,287 | 0.0154 mg/L |
| HIGH KNOB | | 1,500 | 0.0153 mg/L |
| ROCKY MOUNT, TOWN OF | | 6,000 | 0.0152 mg/L |
| PWCSA - EAST | | 168,747 | 0.0151 mg/L |
| TCPSA - GRATTON | | 707 | 0.0150 mg/L |
| BURNT CHIMNEY WATER SYSTEM | | 300 | 0.0150 mg/L |
| SPRINGWOOD SUBDIVISION | | 28 | 0.0149 mg/L |
| NORTH SPRING BEHAVIORAL HEALTHCARE | | 225 | 0.0148 mg/L |
| TIMBERLAKE CROSSING | | 85 | 0.0148 mg/L |
| LOCUST GARDENS MHP | | 90 | 0.0146 mg/L |
| FAUQUIER SPRINGS | | 160 | 0.0146 mg/L |
| PEACOCK HILL SUBDIVISION | | 475 | 0.0144 mg/L |
| BLUE RIDGE SCHOOL | | 260 | 0.0144 mg/L |
| COURTLAND, TOWN OF | | 1,284 | 0.0144 mg/L |
| HILLCREST MOBILE HOME PARK | | 54 | 0.0142 mg/L |
| PRINCE GEORGE WOODS ESTATES | | 60 | 0.0142 mg/L |
| LYNN CASTLE PARK | | 120 | 0.0141 mg/L |
| FORK UNION SANITARY DISTRICT | | 2,150 | 0.0140 mg/L |
| STUART, TOWN OF | | 1,500 | 0.0140 mg/L |
| GEORGE`S CHICKEN, LLC | | 948 | 0.0140 mg/L |
| HILLSBORO, TOWN OF | | 88 | 0.0140 mg/L |
| CHRISTIANSBURG TOWN OF | | 22,000 | 0.0139 mg/L |
| JAMES RIVER ESTATES | | 219 | 0.0138 mg/L |
| BETHEL AREA | | 1,247 | 0.0138 mg/L |
| FORT STORY | VIRGINIA BEACH CITY | 2,510 | 0.0137 mg/L |
| CAMPBELL COUNTY CENTRAL SYSTEM | | 21,761 | 0.0136 mg/L |
| HILLSVILLE, TOWN OF | | 2,884 | 0.0136 mg/L |
| CASCADE MOUNTAIN RESORT | | 145 | 0.0135 mg/L |
| MT ZION/RUSTIC AREA | | 243 | 0.0135 mg/L |
| CARROLL REGIONAL WATER SYSTEM | | 7,500 | 0.0135 mg/L |
| CLARKSVILLE, TOWN OF | | 1,400 | 0.0135 mg/L |
| WESTMORELAND COUNTY INDUSTRIAL PARK | | 802 | 0.0134 mg/L |
| SAVANNAH PINES MOBILE HOME PARK | POOLER | 632 | 0.0132 mg/L |