| Business | Phone |
| A L Boulden & Sons Plumbing Po Box 43, Middletown 21769 | (410) 648-6796 |
| American Residential Svc Middletown 21769 | (301) 473-5527 |
| C A Bud King Jr Plumbing Inc 1929 Mountain Church Rd, Middletown 21769 | (301) 371-6930 |
| Damascus Plumbing 7728 Marker Rd, Middletown 21769 | (301) 371-0071 |
| J C Harris Plumbing & Heating 3120 Old National Pike # A, Middletown 21769 | (301) 371-7574 |
| Neal Plumbing & Heating Inc 6809 Mountain Church Rd, Middletown 21769 | (301) 662-0966 |
| Putman Plumbing & Heating Inc 3596 Colebrook Ct, Middletown 21769 | (301) 371-4395 |