| Business | Phone |
| Air Quality Div 520 Lafayette Rd N, St Paul 55155 | (651) 296-7331 |
| Environmental Quality Board 658 Cedar St # 3, St Paul 55155 | (651) 296-9027 |
| Pollution Control Agency 520 Lafayette Rd N, St Paul 55155 | (651) 296-6300 |
| Program Development 520 Lafayette Rd N, St Paul 55155 | (651) 296-7395 |
| Waters Division 500 Lafayette Rd N # 32, St Paul 55155 | (651) 296-4800 |