| Polluter | Pollutants | Sources | Emissions |
|---|---|---|---|
| 200 Inner Belt Road | 5 | 5 | 0.00 |
| Ames Safety Envelope | 5 | 55 | 56,000.00 |
| Clarendon Hill Tower | 6 | 18 | 28,000.00 |
| Kennedy School | 5 | 5 | 4,000.00 |
| Kiley James Company | 5 | 5 | 200.00 |
| Ma Bay Commuter Railroad Co | 7 | 112 | 4,257.00 |
| Maaco Auto Painting | 7 | 28 | 17,600.00 |
| Mdc Amelia Earhart Dam | 5 | 40 | 6,000.00 |
| Mwra Alewife Brook P | 5 | 15 | 2,197.00 |
| Mystic Valley Foundry | 7 | 21 | 0.00 |
| Rogers Foam Company | 6 | 83 | 18,021.00 |
| Royal Environmental | 5 | 5 | 0.00 |
| Somerville Hospital | 7 | 56 | 2,174.00 |
| United Lithograph | 5 | 95 | 44,000.00 |
| Universal Laundry | 6 | 16 | 10,452.00 |