| All-American Disposal LLC | Moosup | 2 | Fuel Oils | (860) 564-0559 | 0.0 |
| Jolley Precast Inc | Danielson | 8 | Septic Tanks & Systems | (860) 774-9066 | 6.4 |
| D & D Trucking | Canterbury | 1 | Septic and portable sanitation | (860) 546-9598 | 7.8 |
| RND Excavation and Land Clearing LLC | Canterbury | 1 | — | (860) 942-3129 | 7.8 |
| T Strmiska Septic Systems LLC | Canterbury | 1 | Septic and portable sanitation | (860) 546-2072 | 7.8 |
| CCJ Green Recycling LLC | Voluntown | 1 | Trucking-Heavy Hauling | (860) 376-9663 | 8.1 |
| Deans Septic Service LLC | Voluntown | 1 | Septic and portable sanitation | (860) 281-8240 | 8.1 |
| Arts Septic Tank Service LLC | Brooklyn | 2 | Septic and portable sanitation | (860) 208-8067 | 8.2 |
| 365 Septic LLC | Griswold | 2 | Concrete Equipment & Supplies | (860) 949-2199 | 9.1 |
| Flushaway Septic Tank Cleaning Inc | Griswold | 1 | Septic Tank & System Cleaning | (860) 639-1924 | 9.1 |
| JP Sites and Septics LLC | Jewett City | 1 | Septic and portable sanitation | (505) 646-9410 | 9.1 |
| Northeast Septic | Dayville | 1 | Septic and portable sanitation | (860) 377-1862 | 10.9 |
| Rlbpab LLC | Dayville | 1 | — | (860) 377-0150 | 10.9 |
| Brush Tough Forestry Mulching & Land Clearing | Pomfret Center | 2 | — | (860) 428-5978 | 14.0 |
| Abrahamson Septic LLC | Preston | 3 | Septic and portable sanitation | (860) 889-7939 | 14.4 |
| American Dumpster Rental LLC | Preston | 1 | Gardeners | (860) 917-7973 | 14.4 |
| Grey Wolf Waste Services LLC | Preston | 5 | Garbage Collection | (860) 859-1639 | 14.4 |
| Simply Sanitation LLC | Preston | 2 | Waste collection | (860) 710-8585 | 14.4 |
| Ross Recycling Inc | Putnam | 2 | Automobile Parts & Supplies-Used & Rebuilt-Wholesale & Manufacturers | (860) 848-3366 | 14.6 |
| Tri-State Recycling LLC | Putnam | 1 | Recycling | (774) 601-3258 | 14.6 |
