| Business | Phone |
| All State Plumbing Bel Air 21014 | (410) 879-6438 |
| Better Than Ever Plumbing Bel Air 21014 | (410) 638-9376 |
| Century Contractors & Assoc 1901 Thomas Run Cir, Bel Air 21015 | (410) 893-8238 |
| Contractor's Choice Plumbing 507 Plumtree Rd, Bel Air 21015 | (410) 569-2483 |
| Dj's Plumbing & Heating Inc Bel Air 21014 | (410) 838-1039 |
| Dr Rooter Plumbing Bel Air 21014 | (410) 838-0201 |
| Edgar Plumbing & Heating Inc 1216 Jenny Rd, Bel Air 21014 | (410) 803-0052 |
| Grove Plumbing & Heating Inc 334 Baltimore Pike, Bel Air 21014 | (410) 838-6353 |
| Interstate Plumbing & Drain Bel Air 21014 | (410) 838-3232 |
| J T Waterworks Inc Bel Air 21014 | (410) 420-2383 |
| John J Buser Plumbing & Htg 1517 Honeysuckle Dr, Bel Air 21014 | (410) 838-8069 |
| John Smith & Sons Plumbing Bel Air 21014 | (410) 893-2733 |
| L J Butler Plumbing & Heating Bel Air 21014 | (410) 893-6191 |
| Magness Plumbing & Heating Inc 1502 S Tollgate Rd, Bel Air 21015 | (410) 569-0672 |
| Mike's Plumbing & Heating Svc Bel Air 21014 | (410) 879-9300 |
| Norcross Plumbing & Heating Bel Air 21014 | (410) 803-2200 |
| Premier Plumbing Co Bel Air 21014 | (410) 893-0787 |
| Robert Griffin Plumbing & Heat 16 N Hays St, Bel Air 21014 | (410) 836-8234 |
| Stillwell Plumbing Bel Air 21014 | (410) 879-6340 |
| United Plumbing & Drain Clng 606 Evergreen Rd, Bel Air 21014 | (410) 676-3553 |
| Watson Plumbing 403 E Ring Factory Rd, Bel Air 21014 | (410) 879-1964 |
| Wayne's Quality Plumbing Svc Bel Air 21014 | (410) 838-1363 |