Buyer's Guide
| Company | Location | Company Type |
|---|---|---|
| Severn Trent Services- Arsenic Removal | Tampa | Manufacturer |
| Severn Trent Services-Filtration Products | Fort Washington | Manufacturer |
| Seychelle Environmental Technologies, Inc. | San Juan Capistrano | Manufacturer |
| Shelco Filters | Middletown, Connecticut, United States | Manufacturer |
| Shellab (Sheldon Manufacturing, Inc.) | Cornelius | Manufacturer |
| Shelton Associates, Inc | Pompano Beach | Manufacturer |
| Siemens Water Technologies | Warrendale | Manufacturer |
| Sierra Instruments Inc | Monterey | Manufacturer |
| Sierra Monitor Corporation | Milpitas | Manufacturer |
| Simply Cool Coolers | Plainview | Manufacturer |
| Simpson Environmental Corporation | Burlington | Manufacturer |
| SJE-Rhombus | Detroit Lakes, Minnesota, United States | Manufacturer |
| SKS Science Products | Watervliet | Manufacturer |
| Snyder Industries | Lincoln | Manufacturer |
| So-Safe International | Dubai | Manufacturer |
| SolarBee, Inc. | Dickinson | Manufacturer |
| Sollux Incorporated | Cincinnati | Manufacturer |
| Solmar Corp. | Carlsbad | Manufacturer |
| SolmeteXWater, a div. of Layne Christensen Co. | Northborough | Manufacturer |
| Solutions Software | Williamsport | Manufacturer |
| Southwest Microwave Inc. | Tempe, Arizona, United States | Manufacturer |
| Specialty Bulb Co., Inc. | Bohemia | Manufacturer |
| Speco International, L.L.C. | Marshfield | Manufacturer |
| Spectronics Corp. | Westbury | Manufacturer |
| Sper Scientific | Scottsdale, Arizona, United States | Manufacturer |
