| Business | Phone |
| Gravenhurst Plumbing Heating 210 Brock St, Gravenhurst P1P 1H4 | (705) 687-3402 |
| Johnston's Plumbing & Heating Winhara Rd, Gravenhurst | (705) 687-5570 |
| R G Holder Plumbing 1064 Barkway Rd, Gravenhurst P1P 1R3 | (705) 687-7448 |
| Stevenson Plumbing & Electric 295 Margaret St, Gravenhurst P1P 1K8 | (705) 687-4994 |
| Central Plumbing & Electrical 390 First St N, Gravenhurst P1P 1G3 | (705) 687-2751 |