| Business | Phone |
| West Knox Waste Water 10181 Gallows Point Dr, Knoxville 37931 | (865) 690-5452 |
| Axelrod Environmental Systs 9933 Gate Post Way, Knoxville 37931 | (865) 531-8120 |
| Culligan Water Conditioning 7537 Taggart Ln, Knoxville 37938 | (865) 938-9287 |
| Pure Water Technologies 8630 Asheville Hwy, Knoxville 37924 | (865) 934-5992 |
| Rainsoft 1111 Forest Ave, Knoxville 37916 | (865) 577-5055 |
| Perfect Water 5812 Strawberry Plains Pike, Knoxville 37914 | (865) 544-7873 |
| National Safety Assoc 218 S Peters Rd, Knoxville 37923 | (865) 539-3975 |
| Hydro-Tech Inc 11437 Turkey Creek Rd, Knoxville 37934 | (865) 966-6252 |
| Innotech Llc Knoxville 37923 | (865) 692-5079 |
| International Process Equip 6947 Riverwood Dr, Knoxville 37920 | (865) 579-0867 |