| Business | Phone |
| Air Management Office 100 N Senate Ave # N1001, Indianapolis 46204 | (317) 232-8222 |
| Drinking Water Branch 2525 N Shadeland Ave, Indianapolis 46219 | (317) 308-3281 |
| Hazardous Waste Management 105 S Meridian St # 906, Indianapolis 46225 | (317) 232-3292 |
| Water Division 402 W Washington St # W264, Indianapolis 46204 | (317) 232-4160 |
| Solid Waste Management Div 100 N Senate Ave # N1154, Indianapolis 46204 | (317) 232-3210 |