| Business | Phone |
| Adam's Plumbing Rr 3 Stn Dundas Lcd, Dundas L9H 5E3 | (905) 627-7739 |
| Robert C Park Plumbing Valley Rd, Dundas | (905) 527-7217 |
| Royjan Mechanical 210 Governor's Rd, Dundas L9H 3K1 | (905) 628-4666 |
| Thomas R Birnie & Sons Ltd 58 Little John Rd, Dundas L9H 4G7 | (905) 628-5796 |
| Dy's Plumbing Supplies 10 Foundry St, Dundas L9H 2V7 | (905) 627-5657 |
| Ed Pollard Plumbing 8 Witherspoon St, Dundas L9H 2C5 | (905) 628-4063 |