Applied Membranes, Inc.

DuPage Water Treat. Prod.

Engineering Specialties

Filter Soft

Horner Discus Int'l. Inc.

International Water Werks, Inc.

Krevco

Oasis Corp.

Ozone Pure Water Inc.

Ozonia North America

Ozotech, Inc.

Pacific Ozone Tech., Inc.

Pure Aqua, Inc.

SHURflo

Smart Prod., Inc.

WEBTROL Pumps / Weber Ind.