| Business | Phone |
| Advance Plumbing & Heating Co 2984 Grand River Ave, Detroit 48201 | (313) 831-7770 |
| Environmental Filtration 615 Edison St, Detroit 48202 | (313) 867-7600 |
| Detroit Pipe & Supply Co 6325 Grand River Ave, Detroit 48208 | (313) 894-6400 |
| Plumbers Wholesale Supply Co 24377 W 8 Mile Rd, Detroit 48219 | (313) 537-5400 |
| Best Plumbing 16205 Mack Ave, Detroit 48224 | (313) 885-9333 |
| Wyoming Plumbing & Htg Supl Co 14600 Wyoming St, Detroit 48238 | (313) 933-9470 |