| Business | Phone |
| Adco Water Conditioning Equip 5021 Voges Rd, Madison 53718 | (608) 838-9283 |
| Addie Water Systems Inc Madison 53703 | (608) 256-9085 |
| Alpine Water Svc 2611 W Beltline Hwy, Madison 53713 | (608) 277-1666 |
| Alpine Water Svc 3611 W Beltline Hwy, Madison 53719 | (608) 277-1666 |
| Wisconsin Entek Inc 4 Courtland Cir, Madison 53711 | (608) 271-4528 |
| Capital Water Softener Inc 2096 Helena St, Madison 53704 | (608) 241-1511 |
| Water Shoppe Madison 53711 | (608) 278-1920 |
| Ecowater Systems 1017 Ninth Ave, Madison 53703 | (608) 819-0113 |
| Fox Water 1017 N Sherman Ave, Madison 53704 | (608) 244-6215 |
| Pro-Shot Water Conditioning Madison 53718 | (608) 235-7672 |
| Rain Soft-Dane County 3226 Kingsley Way, Madison 53713 | (608) 274-6400 |