| Business | Phone |
| Aqua Falls Water Treatment 818 E 50th St N, Sioux Falls 57104 | (605) 339-3434 |
| Clean Water Action 231 S Phillips Ave, Sioux Falls 57104 | (605) 978-9196 |
| Sioux Falls Quality Water 807 N Cliff Ave, Sioux Falls 57103 | (605) 339-9554 |
| Sioux Valley Environmental 720 E Benson Rd, Sioux Falls 57104 | (605) 336-3955 |
| Culligan Water Conditioning 1510 W 51st St, Sioux Falls 57105 | (605) 336-2165 |
| Salt Delivery Systems 1305 N Spring Ave, Sioux Falls 57104 | (605) 338-5520 |
| Hawkins Water Treatment Group 27093 Sundowner Ave, Sioux Falls 57106 | (605) 368-5793 |