| Business | Phone |
| Aes Consultants Ltd 1009 Washington St, Grafton 53024 | (262) 375-7500 |
| Cedarburg Science 1555 Wisconsin Ave, Grafton 53024 | (262) 376-0735 |
| Konicek Environmental Cnsltng 1474 N Green Bay Rd, Grafton 53024 | (262) 376-9232 |
| Moraine Environmental Inc 1402 7th Ave, Grafton 53024 | (262) 377-9060 |
| Northern Horizons Of Wisconsin 209 Beech St, Grafton 53024 | (262) 375-1440 |
| Sentinel Environmental Svc 321 Homestead Trl, Grafton 53024 | (262) 375-8110 |
| Recovery Equipment Corp 1525 Wisconsin Ave, Grafton 53024 | (262) 375-3344 |
| Sabel Environmental Svc 768 Homestead Trl, Grafton 53024 | (920) 434-5855 |