| Polluter | Pollutants | Sources | Emissions |
|---|---|---|---|
| Algonquin Gas Transmission Co | 6 | 54 | 515,098.00 |
| Brownell & Company, Inc | 8 | 38 | 67,714.00 |
| Conn Valley Hospital | 6 | 120 | 55,502.00 |
| Donnelley & Sons Co, R R | 6 | 78 | 99,050.00 |
| Durham Mfg. Co. | 1 | 2 | 13,005.20 |
| Habasit Abt, Inc | 7 | 50 | 238,943.00 |
| M. L. & P. Trucking, Llc | 6 | 12 | 2,416.00 |
| Nrg Middletown Operations, Inc | 47 | 226 | 3,512,277.82 |
| Perma Treat Corp. | 5 | 10 | 2,005.85 |
| Pratt & Whitney Div Utc | 9 | 240 | 1,628,977.00 |
| Purification Techs. Inc. | 3 | 5 | 515.00 |
| Stanley-Bostitch Inc. Clinton Plant | 1 | 1 | 1.00 |
| Stone Container Corp. | 1 | 1 | 0.00 |
| Tilcon Connecticut Inc. | 1 | 1 | 0.10 |