| Business | Phone |
| Ised 800 W 2nd St, Waterloo 50701 | (319) 235-0313 |
| Metro Security & Investigation Po Box 215, Waterloo 50704 | (319) 233-6777 |
| C E Solutions Group 501 Sycamore St, Waterloo 50703 | (319) 287-4022 |
| Uni Regional Business Ctr 212 E 4th St, Waterloo 50703 | (319) 236-8123 |