| Arts Septic Tank Service LLC | Brooklyn | 2 | Septic and portable sanitation | (860) 208-8067 | 0.0 |
| Jolley Precast Inc | Danielson | 8 | Septic Tanks & Systems | (860) 774-9066 | 4.9 |
| D & D Trucking | Canterbury | 1 | Septic and portable sanitation | (860) 546-9598 | 6.8 |
| T Strmiska Septic Systems LLC | Canterbury | 1 | Septic and portable sanitation | (860) 546-2072 | 6.8 |
| Northeast Septic | Dayville | 1 | Septic and portable sanitation | (860) 377-1862 | 7.1 |
| Rlbpab LLC | Dayville | 1 | — | (860) 377-0150 | 7.1 |
| All-American Disposal LLC | Moosup | 2 | Fuel Oils | (860) 564-0559 | 8.2 |
| Dylans Dumpsters LLC | Chaplin | 1 | Contractors Equipment Rental | (860) 455-9924 | 9.0 |
| Ross Recycling Inc | Putnam | 2 | Automobile Parts & Supplies-Used & Rebuilt-Wholesale & Manufacturers | (860) 848-3366 | 9.3 |
| Tri-State Recycling LLC | Putnam | 1 | Recycling | (774) 601-3258 | 9.3 |
| Ecocrush LLC | Woodstock Valley | 1 | — | (413) 218-0208 | 12.6 |
| Trickett Septic Service LLC | Mansfield | 1 | Septic Tank & System Cleaning | (860) 423-4255 | 12.6 |
| AL's Septic | Thompson | 1 | Septic and portable sanitation | (860) 774-2381 | 13.7 |
| 365 Septic LLC | Griswold | 2 | Concrete Equipment & Supplies | (860) 949-2199 | 13.9 |
| Flushaway Septic Tank Cleaning Inc | Griswold | 1 | Septic Tank & System Cleaning | (860) 639-1924 | 13.9 |
| JP Sites and Septics LLC | Jewett City | 1 | Septic and portable sanitation | (505) 646-9410 | 13.9 |
| D&S Recycling LLC | North Grosvenordale | 1 | Recycling | (860) 923-9417 | 14.0 |
| Earthworks Construction and Septic LLC | North Grosvenordale | 1 | Septic Tank & System Cleaning | (860) 428-1768 | 14.0 |
| G & M Junk Removal LLC | Willimantic | 1 | Junk removal | (860) 898-3353 | 14.3 |
| Kelley Septic Tank Service Inc | Willimantic | 3 | Septic Tank & System Cleaning | (860) 456-8655 | 14.3 |
| KLT Carting Incorporated | Willimantic | 4 | Waste collection | (860) 428-3396 | 14.3 |
| Northeast Recyclers of Windham Inc | Willimantic | 3 | Automobile Parts & Supplies | (860) 450-0200 | 14.3 |
