| Polluter | Pollutants | Sources | Emissions |
|---|---|---|---|
| American Chemet | 7 | 152 | 12,003.00 |
| Asarco East Helena | 6 | 76 | 0.00 |
| Augusta Main Line #3 (Sta 051) | 6 | 52 | 60,000.00 |
| City Of Helena Landfill | 29 | 29 | 1,101.45 |
| Columbia Paint & Coatings Co. | 1 | 1 | 1,823.00 |
| Exxonmobil - Helena Marketing Terminal | 1 | 3 | 16,000.00 |
| Helena Product Terminal | 3 | 13 | 242,000.00 |
| Helena Sand & Gravel | 7 | 20 | 106,000.00 |
| Helena Valley Pet Cremations | 6 | 6 | 0.00 |
| Lewis & Clark Humane Society | 6 | 6 | 0.00 |
| Mainline #4 | 5 | 30 | 0.00 |
| Oily Waste Processors | 5 | 5 | 0.00 |
| Scratch Gravel Landfill | 28 | 28 | 1,391.49 |