| Business | Phone |
| Water Development Board 1700 Congress Ave 513, Austin 78701 | (512) 463-7847 |
| Water Development Board 611 S Congress Ave, Austin 78704 | (512) 445-1461 |
| Water Development Planning Div 1700 Congress Ave, Austin 78701 | (512) 463-8043 |
| Environmental Affairs Div 118 E Riverside Dr 31, Austin 78704 | (512) 416-3001 |
| Air Permits Div 12100 Park Thirty Five Cir, Austin 78753 | (512) 239-1240 |
| Environmental Quality Comm 12100 Park Thirty Five Cir, Austin 78753 | (512) 239-5500 |
| Public Drinking Water 12100 Park 35 Cir Mc155, Austin 78753 | (512) 239-0990 |
| Recycling & Waste Minimization 12100 Park Thirty Five Cir, Austin 78753 | (512) 458-7271 |
| Water Quality 12100 Park Thirty Five Cirf, Austin 78753 | (512) 239-3900 |
| Texas Natural Conservation Com 1811 Airport Blvd, Austin 78702 | (512) 463-4841 |
| Water Development Board 1700 Hydro Dr, Austin 78728 | (512) 251-2437 |