| Business | Phone |
| Custom Plumbing 11309 N Highway 79, Black Hawk 57718 | (605) 342-6341 |
| Rural Plumbing Svc 5205 Mill Rd, Black Hawk 57718 | (605) 787-6434 |
| Plumbing Design & Installation 7305 Nuthatch Ln, Black Hawk 57718 | (605) 787-7473 |
| Gutzmer Mechanical 6811 Ridgeview Dr, Black Hawk 57718 | (605) 787-4988 |