| Business | Phone |
| Ottumwa Mayor 105 E 3rd St, Ottumwa 52501 | (641) 683-0600 |
| Ottumwa City Engineer 105 E 3rd St, Ottumwa 52501 | (641) 683-0680 |
| Ottumwa City Office 1105 N Quincy Ave, Ottumwa 52501 | (641) 682-4626 |
| Ottumwa Crime Alert 330 W 2nd St, Ottumwa 52501 | (641) 684-5555 |
| Ottumwa Electrical Inspector 105 E 3rd St, Ottumwa 52501 | (641) 683-0611 |
| Ottumwa Inspection Dept 105 E 3rd St, Ottumwa 52501 | (641) 683-0610 |
| Ottumwa Wapello County Sntry 13277 165th Ave, Ottumwa 52501 | (641) 683-0644 |
| Ottumwa Parking Violations 330 W 2nd St, Ottumwa 52501 | (641) 683-0623 |
| Ottumwa Personnel 105 E 3rd St, Ottumwa 52501 | (641) 683-0625 |
| Ottumwa Purchasing 105 E 3rd St, Ottumwa 52501 | (641) 683-0603 |
| Ottumwa Recycling Ctr 2415 Emma St, Ottumwa 52501 | (641) 683-0685 |
| Street Maintenance 1010 Gateway Dr, Ottumwa 52501 | (641) 683-0688 |
| Water Polution Control 2222 Emma St, Ottumwa 52501 | (641) 683-0641 |