| Business | Phone |
| Cascade Designs 4000 1st Ave S, Seattle 98134 | (206) 583-0583 |
| Culligan Water Co 18404 Cascade Ave S 100, Seattle 98188 | (425) 251-8651 |
| Custom Pure-The Water Store 1514 Ne 179th St, Seattle 98155 | (206) 363-0039 |
| Eco Tools 18764 18th Ave Ne, Seattle 98155 | (206) 363-2579 |
| Enviro-Drain Inc 12568 33rd Ave Ne, Seattle 98125 | (206) 363-0316 |
| Sunburst Boat Co 2000 Westlake Ave N 210, Seattle 98109 | (425) 697-3700 |
| Dexter/Mogul Water Management 220 W Mercer St, Seattle 98119 | (206) 298-9456 |
| Filtration Treatment Systems 204 1st Ave S, Seattle 98104 | (206) 652-2424 |
| Heathco International 4033 16th Ave Sw B, Seattle 98106 | (206) 281-7750 |
| Garratt-Callahan Co 1904 3rd Ave, Seattle 98101 | (206) 609-5825 |
| Ipec 213 1st Ave S, Seattle 98104 | (206) 622-5885 |