| Business | Phone |
| Waste Management & Cleanup Div 811 Sw 6th Ave, Portland 97204 | (503) 229-5913 |
| Water Quality Div 811 Sw 6th Ave, Portland 97204 | (503) 229-5279 |
| Water Shed Basin 811 Sw 6th Ave, Portland 97204 | (503) 229-5284 |
| Air Quality Div 811 Sw 6th Ave, Portland 97204 | (503) 229-5359 |
| Solid Waste Div 2501 Sw 1st Ave, Portland 97201 | (503) 229-5913 |
| Solid Waste Reduction Planning 811 Sw 6th Ave, Portland 97204 | (503) 229-6165 |
| Drinking Water Systems 811 Sw 6th Ave, Portland 97204 | (503) 731-4010 |
| Environmental Quality Dept 2020 Sw 4th Ave # 400, Portland 97201 | (503) 229-5263 |
| Environmental Quality Dept 811 Sw 6th Ave, Portland 97204 | (503) 229-5696 |