| Business | Phone |
| Air Quality Div 1200 Missouri Ave, Bismarck 58504 | (701) 328-5188 |
| Water Commission 900 E Boulevard Ave # 770, Bismarck 58505 | (701) 328-2750 |
| Water Development Div 900 E Boulevard Ave, Bismarck 58505 | (701) 328-2752 |
| Water Quality Div 1200 Missouri Ave, Bismarck 58504 | (701) 328-5210 |
| State Engineer 900 E Boulevard Ave, Bismarck 58505 | (701) 328-4940 |
| Hazardous Waste 1200 Missouri Ave, Bismarck 58504 | (701) 328-5166 |