| LEE COUNTY UTILITIES | 282,556 | 13 | Detected |
| CAPE CORAL, CITY OF | 172,693 | 28 | Clean |
| CITY OF FORT MYERS WATER TREATMENT PLANT | 92,219 | 22 | Clean |
| BONITA SPRINGS UTILITIES | 76,033 | 13 | Clean |
| FLORIDA GOVERNMENTAL UTILITY AUTHORITY | 32,296 | 43 | Detected |
| GREATER PINE ISLAND WATER ASSOCIATION | 15,805 | 3 | Clean |
| ISLAND WATER ASSOCIATION | 14,784 | 4 | Clean |
| GATEWAY SERVICES DISTRICT | 14,553 | 15 | Detected |
| TOWN OF FORT MYERS BEACH (BEACH WATER) | 6,499 | 6 | Detected |
| CITRUS PARK RV RESORT (BONITA TERRA) | 3,282 | 27 | — |
| LAKE FAIRWAYS MOBILE HOME PARK | 2,000 | 22 | — |
| TAMIAMI VILLAGE MOBILE HOME PARK | 1,863 | 3 | — |
| THE ALVA SCHOOL | 1,500 | 22 | — |
| PINE LAKES MOBILE HOME PARK | 1,220 | 2 | — |
| OLD BRIDGE VILLAGE MOBILE HOME PARK | 1,000 | 26 | — |
| LAS DELICIAS CAFETERIA | 960 | 14 | — |
| HANDY FOOD STORE #86 -ALVA | 730 | 13 | — |
| LEHIGH EXPRESS 7- ELEVEN, INC NO. 38049 | 650 | 8 | — |
| PELICAN LANDING BEACH PARK | 600 | 3 | — |
| FOUNTAIN VIEW RV PARK | 500 | 36 | — |
| N D SOLUTIONS INC. DBA: SUNOCO MART | 500 | 15 | — |
| SYNGENTA FLOWERS INC. | 500 | 3 | Clean |
| MOBILE MANOR MOBILE HOME PARK | 482 | 14 | — |
| SUNSEEKER'S R.V. PARK | 480 | 6 | — |
| OAK PARK MOBILE HOME VILLAGE | 400 | 68 | — |
| 714 BURNT STORE RD, LLC-7-ELEVEN STORE | 400 | 9 | — |
| NORTH CAPTIVA ISLAND CLUB BATH HOUSE WTP | 380 | 48 | — |
| CHARLESTON PARK | 312 | 24 | — |
| CORAL OAKS GOLF COURSE | 300 | 15 | — |
| USEPPA ISLAND CLUB | 200 | 67 | — |
| BAYSHORE KINGDOM HALL OF JEHOVAH | 200 | 36 | — |
| CAYO COSTA STATE PARK | 200 | 15 | — |
| FARM OP INC.-CORKSCREW CAMP | 200 | 5 | — |
| IGLESIA GETSEMANI CHURCH | 200 | 8 | — |
| FARMER MIKES PRODUCE, INC. | 200 | 0 | — |
| CABBAGE KEY HIDEAWAY | 200 | 3 | — |
| RAINTREE RV RESORT | 200 | 239 | — |
| BARNACLES / MAINSTAYS RESTAURANT | 150 | 5 | — |
| SOUTHERN FRESH FARMS | 150 | 2 | — |
| CALOOSA GIRL SCOUT CAMP | 150 | 9 | — |
| LEO'S FRENCH TOAST HOUSE | 130 | 20 | — |
| BUCKINGHAM FARMS/B TOWN FARMS LLC | 130 | 1 | — |
| BUCKINGHAM COMMUNITY CHURCH | 130 | 28 | — |
| TEMPLE BAPTIST CHURCH ; SCHOOL | 100 | 56 | — |
| WONDERLAND MOTEL | 100 | 23 | — |
| TROYER BROTHERS FL INC. | 100 | 29 | — |
| CALOOSAHATCHEE REGIONAL PARK | 100 | 14 | — |
| OLD CORKSCREW GOLF CLUB | 100 | 10 | — |
| SAFETY HARBOR CLUB #12/OVER THE WATERFRO | 100 | 32 | — |
| CARNICERIA MONTERREY II, INC. | 100 | 0 | — |