| Business | Phone |
| Mc Donald Supply 3310 University Ave, Waterloo 50701 | (319) 234-6853 |
| Nelson & Hagy Inc 622 Ansborough Ave, Waterloo 50701 | (319) 234-6894 |
| Plumb Supply Waterloo 3338 W Airline Hwy, Waterloo 50703 | (319) 236-1511 |
| Ferguson Enterprises Inc 3730 Martin Luther King Jr Dr, Waterloo 50703 | (319) 235-3300 |
| Winterbottom Supply Co Inc 540 Ansborough Ave, Waterloo 50701 | (319) 233-6123 |