| Business | Phone |
| R & M Plumbing & Mechanical 20700 W Liberty Rd, White Hall 21161 | (410) 357-8500 |
| Schott Plumbing & Heating 4717 Mellow Rd, White Hall 21161 | (410) 557-7862 |
| J C Plumbing & Heating Inc 4444 Rose Ct, White Hall 21161 | (410) 557-8388 |
| L T Amos Inc 2007 White Hall Rd, White Hall 21161 | (410) 343-2360 |