Chemical Well Treatment
| Action Mfg. & Supply Inc. |
| Addie Water Sys., Inc. |
| Alan Mfg. |
| Aqua Man Inc. |
| AquaFlow Pump & Supply Co. |
| Better Water Ind. Inc. |
| Bio-Cide Inc. |
| Canadian Water Cond. Inc. |
| Capital Controls Co., Inc. |
| Charger Water Treatment Products, LLC. |
| DuPage Water Treat. Prod. |
| Engineering Specialties |
| FWT Wholesale Inc. |
| Filter Soft |
| Horner Discus Int'l. Inc. |
| Hurley Chicago Co., Inc. |
| Ionics, Inc. |
| Kjell Corp., (The) |
| Krudico, Inc. |
| Link-O-Matic Co., Inc. |
| Nelsen Corp. |
| New Age Water Tech. |
| Oasis Corp. |
| Osmonics Autotrol |
| Ozone Purification Tech., Inc. |
| R.O. Sys. Int'l. |
| Smith & Loveless, Inc. |
| Southeastern Filtration & Equip. Sys. |
| Spectrum Labs, Inc. |
| Springsoft Int'l. |
| TriSep Corp. |
| Watcon, Inc. |
| Water-Right, Inc. |
| Waterite Inc. |
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