| Business | Phone |
| Potter Plumbing & Heating Inc 1106 Maple St, Lamar 64759 | (417) 682-3551 |
| Jeffries Plumbing 1002 E 12th St, Lamar 64759 | (417) 682-5727 |
| Jeffries Plumbing & Heating 1102 E 12th St, Lamar 64759 | (417) 667-6212 |
| Leman Plumbing 226 S Highway O, Lamar 64759 | (417) 681-0519 |