| NORTH SUMTER UTILITY 3WPS | 45,214 | 6 | Detected |
| WILDWOOD, CITY OF (7 WPS) | 25,941 | 64 | Detected |
| LITTLE SUMTER UTILITIES 3WPS | 25,538 | 4 | Detected |
| SOUTH SUMTER UTILITIES | 24,278 | 0 | Clean |
| CSU WTP NO. 1 | 19,699 | 0 | Clean |
| LAKE PANASOFFKEE WATER ASSN 2WPS | 4,642 | 35 | Detected |
| VILLAGE OF PINE RIDGE (CONSEC) | 3,914 | 0 | Detected |
| BUSHNELL, CITY OF (2 WPS) | 3,047 | 51 | — |
| SUMTER CORRECTIONAL INSTITUTION | 2,008 | 80 | — |
| MIDDLETON UTILITIES | 1,554 | 1 | — |
| GIBSON PLACE UTILITIES | 1,287 | 0 | — |
| OAKLAND HILLS | 1,050 | 83 | Detected |
| COLEMAN, CITY OF | 824 | 71 | — |
| WEBSTER, CITY OF (2 WPS) | 800 | 34 | — |
| CENTER HILL WATER DEPT-CITY OF | 762 | 14 | — |
| SUMTERVILLE WATER TREATMENT PLANT | 500 | 99 | — |
| FLORIDA GRANDE MOTOR COACH RESORT | 490 | 58 | — |
| ORANGE BLOSSOM UTILITIES, INC | 335 | 4 | — |
| SHADY BROOK R.V. RESORT | 298 | 6 | — |
| NEW LIFE CENTER MINISTRIES | 250 | 7 | — |
| THE WOODS UTILITY COMPANY | 216 | 60 | — |
| LAKE PAN RV VILLAGE (KOA/TURTLEBACK RV) | 200 | 86 | — |
| WEBSTER RV RESORT, LLC. | 155 | 29 | — |
| THOUSAND PALMS RESORT | 152 | 19 | — |
| RIVERSIDE RV PARK | 150 | 20 | — |
| RAILS END TR PK | 150 | 55 | — |
| BW CENTER PROPERTIES, LLC | 125 | 6 | — |
| JUMPER CREEK UTILITY COMPANY | 115 | 4 | — |
| HARDEE'S/AMOCO | 100 | 7 | — |
| EAGLE ROOFING PRODUCTS OF FLORIDA, LLC. | 100 | 9 | — |
| SUWANNEE AMERICAN CEMENT COMPANY, LLC | 100 | 12 | — |
| FLORILOW OAKS | 96 | 18 | — |
| OAK TREE CIRCLE PARK LLC | 70 | 71 | — |
| ISLEWORTH | 60 | 30 | — |
| BREEZY OAKS RV PARK | 60 | 26 | — |
| CAL-MAINE FOODS, INC | 50 | 20 | — |
| GREAT SOUTHERN WOOD PRESERVING, INC | 50 | 12 | — |
| PINES PROFESSIONAL MGT CENTER | 50 | 18 | — |
| FIRST BAPTIST CHURCH OF OXFORD | 50 | 10 | — |
| FIRST ASSEMBLY OF GOD | 50 | 3 | — |
| FLORIDA NATIONAL CEMETERY | 40 | 30 | — |
| SUNSHINE VILLAGE MHP | 26 | 9 | — |
| NOBLETON DOLLAR GENERAL | 25 | 6 | — |
| WHISPERING OAKS WINERY | 25 | 6 | — |
| DOLLAR GENERAL WILDWOOD | 25 | 0 | — |
| DOLLAR GENERAL BUSHNELL | 25 | 6 | — |
| FL NAT'L CEMETERY SATELLITE RESTROOMS | 25 | 0 | — |
| GREENVIEW PROPERTIES | 25 | 2 | — |
| BATTLE CREEK TRAILER PARK | 25 | 12 | — |
| CAMP WILDWOOD GIRL SCOUT CAMP | 25 | 26 | — |