Filtration, Micro
| AF Equip. Co. Inc. |
| ATP Mfg. Ltd. |
| Action Mfg. & Supply Inc. |
| Advanced Membrane Tech., Inc. |
| Alamo Water Refiners, Inc. |
| American Engineering Svc., Inc. |
| Applied Membranes, Inc. |
| Aqua Man Inc. |
| AQUAPURA Corp. (The) |
| Bio-Chem Assoc., Inc. |
| Canadian Water Cond. Inc. |
| Carbon Link Corp. |
| Cartwright Consulting Co. |
| Challenger Water Int'l., Inc. |
| Eden Equip. Co. |
| Elga Inc. |
| Envirogard Prod. Ltd. |
| Fibercor |
| Filter Prod., Separations, & Sys. Inc. |
| Flowmatic Sys., Inc. |
| Global EnviroScience Technologies, Inc. |
| H2O Int'l. Inc. |
| Harmsco Filtration Prod. |
| Horner Discus Int'l. Inc. |
| Hydro Systems Int'l., Inc. |
| International Water Werks, Inc. |
| KX Ind., L.P. |
| Katadyn U.S.A., Inc. |
| Kinetico Inc., Engineered Sys. Div. |
| Krevco |
| Lancaster Pump |
| Link-O-Matic Co., Inc. |
| Meissner Filtration Prod., Inc. |
| Memtec America Corp. |
| MID AMERICA WATER TREATMENT |
| Mountain Filtration Sys., Inc. |
| N.R.G. Enterprises, Inc. |
| New Age Water Tech. |
| Nimbus Water Sys., Inc. |
| Parker Hannifin Corp. |
| Pro-Flo Prod., Inc. |
| Pure Water Source (The) |
| PURITY Corporation (The) |
| Rosedale Prod. |
| Separmatic Filter Co. |
| Smith & Loveless, Inc. |
| Southeastern Filtration & Equip. Sys. |
| SpinTek Filtration |
| Springsoft Int'l. |
| SunRay Tech., Inc. |
| Sunshine Water Cond. |
| U.S. Filter |
| Valnco Inc. |
| Water Tec Int'l. |
| Water Tec Tucson |
| Watermark Corp. |
| Watersolve Int'l. |
| Western Water Prod., Inc. |
|
|