Cooling Water Chemicals / Treatment
| AWT- Advanced Water Tech. |
| American Resin Corp. |
| Angus Chemical Co. |
| Aqua-Flo, Inc. |
| Aquanetics Sys., Inc. |
| Arc Water Treat. Co. of MD, Inc. |
| Ashland Chemical Co. |
| Betz Dearborn |
| Bio-Chem Assoc., Inc. |
| Bio-Cide Inc. |
| ChemTreat, Inc. |
| CuZn Water Sys. |
| Ecolab Inc. |
| Ecolab Inc., Food & Bev. Div. |
| Faiz Enterprises |
| Fuller Engineering Inc. |
| Hood Mechanical Co. |
| Horner Discus Int'l. Inc. |
| WEDECO Ideal Horizons |
| Keytech Water Mgmt. |
| Mid South Chemical Co., Inc. |
| Ozone Purification Tech., Inc. |
| Ozotech, Inc. |
| Piermont Ind., Inc. |
| Ques Ind. Inc. |
| Quint Corp. |
| RSI Int'l. |
| Rochester Midland Corp. |
| Schaefer Tech., Inc. |
| Southeastern Filtration & Equip. Sys. |
| Sunshine Water Cond. |
| TERLYN Industries, Inc. |
| Watcon, Inc. |
| Water Equip. Tech. Inc. |
| Watermark Corp. |
| Wayne Consultants, Inc. |
| Earthcrew, Inc. |
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