| Business | Phone |
| Day Plumbing & Heating 300 2nd St Sw, Watertown 57201 | (605) 886-5003 |
| Sangl Plumbing 2015 13th Ave Ne, Watertown 57201 | (605) 882-1312 |
| Redlinger Bros Plumbing & Htg 21 S Broadway, Watertown 57201 | (605) 886-6955 |
| Grant Plumbing & Heating 704 2nd Ave Se, Watertown 57201 | (605) 886-8609 |
| Hurney Plumbing Inc 716 W Kemp, Watertown 57201 | (605) 882-1751 |