AWT- Advanced Water Tech.

American Resin Corp.

Angus Chemical Co.

Aqua Man Inc.

Arc Water Treat. Co.

Ashland Chemical Co.

Betz Dearborn

Bio-Chem Assoc., Inc.

CAT PUMPS

ChemTreat, Inc.

Eden Equip. Co.

FWT Wholesale Inc.

Faiz Enterprises

Fuller Engineering Inc.

Hood Mechanical Co.

Keytech Water Mgmt.

Menco Tech., Inc.

Mid South Chemical Co., Inc.

Nu-Calgon

Ques Ind. Inc.

Quint Corp.

RSI Int'l.

Rochester Midland Corp.

Terlyn Ind.

Watcon, Inc.

Wayne Consultants, Inc.

Earthcrew, Inc.