Alamo Water Refiners, Inc.

Applied Membranes, Inc.

Canadian Water Cond. Inc.

Cochrane, Inc.

DuPage Water Treat. Prod.

Horner Discus Int'l. Inc.

Hudson Corp. of Texas

K & M Plastics, Inc.

Link-O-Matic Co., Inc.

MID AMERICA WATER TREATMENT

Park Int'l. Corp.

RainSoft

Rayne Corp.

Rowlands Sales Co., Inc.

Safe Water Tech., Inc.

Sunshine Water Cond.

Western Water Prod., Inc.